Laws Of Life Essay Maxims Restaurant

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 What is a maxim, you ask?

Simple. It’s a rule for you to live by.

Why do you need maxims?

Simple. Without them you live a weak and undisciplined life, lacking in consistency.

A life not governed by any maxim is a deeply unconscious life that will lead…nowhere.

Below are 11 maxims that will help guide your actions towards a more successful life.

#1 Absorb what is useful; Disregard that which is useless

The first time I ever encountered a maxim was when I started practicing Jeet Kune Do at age 14. At the end of each practice we would recite a bunch of maxims. Out of all the maxims I heard, this was the only one that I truly “absorbed”.

How appropriate.

Jeet Kune Do is actually founded on this very maxim. JDK is the father of modern MMA. Bruce Lee created it by taking all the best stuff from all other martial arts, mixing it together, and creating his own one. All the traditional martial artists got angry at him for doing it. But no one remembers any of their names, while Bruce Lee’s will forever be known as a famous pioneer.

This maxim has impacted my life in a big way ever since. I am a “thief” — and I’m proud of it. I steal ideas from the most brilliant minds. You should do the same.

#2 Your brain is constantly being rewired

And it’s all on you to make sure that it’s being wired optimally. Any time you’re having a negative thought, that’s another repetition given to a corresponding neural pathway. This makes it stronger, and more likely for you to think negatively again.

Is that really what you want?

To consistently have negative thoughts is an indicator of ignorance. A highly conscious person would never hurt himself on purpose by lowering the quality of his most important tool — the brain.

By reminding myself of this maxim, I have eliminated almost all negative thinking. While I might not always be delusionarily positive, I am never negative. I am at worst neutral.

#3 Time is short, you will die soon

This is fact.

At first it’s a scary thing to think about. Then it becomes very liberating.

Death is the ultimate liberator. It’s impossible to say anything about death other than that it happens — without fail.

Death is the ultimate liberator. Life is potentially scary.

#4 Your life is the sum of the narratives you tell yourself

All personal experience is subjective. “Reality” cannot be proven to objectively exist. You can hang out with a friend and look at a rock and both of you can agree that you’re seeing a rock. But that’s not real reality. That’s consensus reality.

The takeaway is this: your life is perceived to be whatever you want it to be — no exceptions. You have a certain amount of control (no one knows how much) over the subjective experience known as your life.

Every event merely is. It’s your responsibility to interpret it in an empowering manner. Crude example: if you’re sad about your grandma dying — that’s your narrative making it seem negative.

All is but opinion.

Your internal dialogue, and how you interpret the things that happen to you,  are completely up to you to mentally manipulate in your favor any way you can. Much of Stoicism is devoted to this pursuit.

You can either choose to listen to a disempowering narrative, or you choose to listen to a narrative where you are the champion.

But what if others disagree?

Well, who are others to decide what is real or not?

What authority do they have behind their claims?

No one has a claim on your reality, except you.

Choose an epic narrative.

Choose to have an inner monologue that  is delusionally positive and constantly pumps you up.

#5 This too shall pass

Heraclitus, the philosopher, said that change is the only constant. He was right.

Remind yourself of this anytime you’re suffering, complaining, or struggling with the present situation.

#6 Life is about making choices

Time is the most valuable resource. At second place comes willpower.

Napoleon Bonaparte said:

Nothing is more difficult, and therefore more precious than being able to decide…

And it’s true. Willpower, as ascribed to your prefrontal cortex, is the “finite” resource  being used to make a decision.

As Napoleon famously asserted, most people don’t like making decisions, and never make an effort to practice their willpower. They are also in the habit of spending it on all the wrong things.

They waste their second most important resource on deciding which TV show to watch. But they don’t use it to build a business, build a body, or educate themselves.

#7 There is a “law” of compounding: Follow it

Just as there is power in compound interest, there is also power in compound experience. It’s not an exact law though, because there’s a difference between compound interest (money) and that of compound experience.

The difference is that it takes forever for compound interest to start producing financial results for the normal person… Let’s say you save $500 on a monthly basis — which you absolutely can if you’re frugal — and invest it in the stock market or a savings account. Your investment then appreciates by 5 % on a yearly basis. If you keep this up for 20 years you’ll end up with $207,729.47.

[Note: You can check this out yourself to make it more concrete…]

And while that sounds like nice chunk of cash, it’s not really as great as it sounds…. Because you’re  probably not taking into account that:

1. You’re locking in this capital for 20 damn years (!), and in doing so probably missing a bunch of better investment opportunities.

2. In 20 years from now, your hefty sum of $207,729.47  won’t have the same purchasing power as it does today. Given how much money is being printed nowadays, it’s hard to know how much that amount of money will be worth in the future.

3. The stock market, or your savings account, could potentially crash at any time. Like when Lehman Brothers collapsed and initiated the financial crisis of 2008. If that happens, you’ll be set back a long way, maybe minus 30-100%. If that happens, all your previously  compounded interest goes out the window.

So, compound interest is awesome in theory. But not always awesome in practice. At least not if you’re an average Joe starting from scratch hoping to get rich from it in 20+ years.

–Experience, however, is safer. It is fully subject to the “law” of compounding:

1. You will learn more, and quicker, if you know a ton of stuff. This is because learning happens mainly by creating associations between memories. If you already have a ton of associations that relate to something, you’ll memorize it almost instantly.

2. If you already have a lot of experience in an area, your brain is primed to see patterns that others cannot see. If you’ve got a lot of experience with business you can see potential business opportunities more easily. If you’re good at picking up girls you can see opportunities for doing that where others don’t. If you’re good at fighting you can easily find openings to strike your opponent.

3. The more you know, the more often you get “inspired”. Einstein said that:

A new idea comes suddenly and in a rather intuitive way, but intuition is nothing but the outcome of earlier intellectual experience.

And while his words don’t provide any definitive proof, this has definitely been the case for me over the past 3 years.

The more things you learn, the more easily you’ll get flashes of insight. This is a direct result of your brain finding a “fit” between a bunch of already existing associations. Your subconscious is always at work, trying to fit together different pieces of information to see how they mesh with each other.

Given this “law” of compound experience, it becomes important to learn as many things as possible early in life.

#8 A consistent process produces success

The process is the cause behind the effect. All positive results stem from an intelligently created process put to work consistently over a long period of time.

Michael Jordan didn’t become a legendary basket ball player overnight. He did it by putting in thousands of hours practicing day in an day out, while fine-tuning his framework for learning.

The same can be said of just about any successful person. They’re successful because they’ve created a daily routine that fit their desired outcome, and stuck to it consistently while eliminating what doesn’t work, and doing more of what works well.

My physique was at best slightly above average 3 years ago. Now it’s elite. How did that happen?

Ain’t nothing to it but hardcore consistency in diet, sleep, and an efficient pre-workout ritual that pumps me up to lift heavy-ass weights.

#9 Do today what others won’t do so that tomorrow you can do what others cannot.

Plain and simple: put in the work now and during the foreseeable future, and reap the rewards of it later. While others were sleeping, you were hustling. Now who’s lucky?

Not you. You made the conscious decision to live like no one else would. You took the path least traveled. You stuck to the process.

The hard life is tough…But only for a while. Then it pays off big.

The easy life isn’t challenging at all, and that’s why it pays off in direct proportion to that — not at all.

#10 Rise to the work of man

This is an abbreviation of a quote from Marcus Aurelius’ Meditations.  Use it to remind yourself that you’re not supposed to snooze, sleep in, or be lazy. Nature has fixed a certain amount of sleep for you, don’t overextend it.

Bees, horses, and insects fulfill their purpose in nature without effort. Humans are confused: What is my purpose?

I don’t know… But I do know the following: your purpose is not found or fulfilled lying in your bed, sleeping away the day.


Ok, so I lied. There is no eleventh maxim.

But check out the comment section for many more maxims.

Breaking out of Homeostasis: Get the book

I worked for over two years and read more than 200 books as part of the research to complete my long-awaited book Breaking out of Homeostasis. It became a bestseller in its first week.

Breaking out of Homeostasis is the book to read for young men in a hurry to succeed but also for those who are in the middle of their career and feel like they’re stuck in a rut, or those who’ve made their fortune and want to improve their health and life quality.

It has been praised by the European hedge fund manager of the decade Mikael Syding, fasting originator Martin Berkhan, and finance billionaire Martin Sandquist.

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Context: Public health law has received considerable attention in recent years and has become an essential field in public health. Public health law research, however, has received less attention.

Methods: Expert commentary.

Findings: This article explores public health law research, defined as the scientific study of the relation of law and legal practices to population health. The article offers a logic model of public health law research and a typology of approaches to studying the effects of law on public health. Research on the content and prevalence of public health laws, processes of adopting and implementing laws, and the extent to which and mechanisms through which law affects health outcomes can use methods drawn from epidemiology, economics, sociology, and other disciplines. The maturation of public health law research as a field depends on methodological rigor, adequate research funding, access to appropriate data sources, and policymakers’ use of research findings.

Conclusions: Public health law research is a young field but holds great promise for supporting evidence-based policymaking that will improve population health.

Keywords: Public health, law, legal, scholarship, research

Law is an important discipline within public health (Gostin, Burris, and Lazzarini 1999). Legal “powers, duties and restraints” structure the mission of public health agencies and shape how it is carried out (Gostin 2008). Law is a prominent intervention tool to achieve particular public health goals. Laws and their implementation also have important unintended effects, both positive and negative, on population health. Although public health law has a long history in the United States (Tobey 1939), it was one of the fields of public health that fell into neglect when public health was thought to have conquered infectious disease. Over the past two decades, though, the reemergence of infectious disease as a major public health concern and a growing awareness of the complexity of health regulation at the local, national, and global levels have restored law to importance in public health and academic law. No longer confined to end-of-the-day conference panels on “legal and ethical issues,” public health law now has its own office at the Centers for Disease Control and Prevention, academic centers, journals, national and international professional societies, and a shelf of important treatises (Larkin and McGowan 2008).

Notwithstanding all the writing and commentary on public health law, there has been little discussion of public health law research and its place in the fields of law and public health. The evidence produced by empirical research is important to both public health law practice and scholarship. It constitutes the “facts” justifying regulatory action and supporting normative arguments about what policies are most desirable, effective, or consistent with human rights or other legal standards. To be sure, law legitimately serves as a site for the articulation and clash of values, and lawmaking often necessitates decisions that cannot await full information. Furthermore, not all law is or can be “evidence based,” even in public health. At the same time, empirical research is not just an ammunition dump for adversarial legal battle. The responsible use of law as a tool for improving public health requires a commitment to the pursuit and consideration of scientific evidence when possible. In public health, just as in health care (Sox and Greenfield 2009), evidence should inform the investment in and implementation of policy, and a consciousness of data and the scientific method can improve the decisions of policymakers and practitioners even in the absence of data. This is the promise of public health law research. At a time when empirical health law has emerged from a general flowering of empirical legal research as a distinct scholarly field (Mello and Zeiler 2008), scientific research is a tie that can now bind law to public health. In this article, we describe and chart a future for public health law research. Our discussion was occasioned by the launch of a major initiative by the Robert Wood Johnson Foundation (RWJF) to sponsor public health law research and expand the field (RWJF Public Health Law Research Program 2009). It thus is an opportune time to reflect on the field: its definition and boundaries, the types of research that a robust field of public health law research should include, and the challenges to be faced in growing and strengthening the field. (Although we are participating in the RWJF initiative as the leaders of its National Program Office, this article concerns the field of public health law research generally, not the specific priorities or funding areas of the Public Health Law Research program.)

Defining Public Health Law Research

We define public health law research (PHLR) as “the scientific study of the relation of law and legal practices to population health.” This includes both direct relationships between law and health, and relationships mediated through the effects of law on health behaviors and other processes and structures that affect population health. In this section, we elaborate on this definition in order to distinguish PHLR from other fields and forms of public health law knowledge.

Distinguishing PHLR from Public Health Law

Lawrence Gostin's widely cited definition of public health law is

the study of the legal powers and duties of the state to ensure the conditions for people to be healthy (e.g., to identify, prevent, and ameliorate risks to health and safety in the population), and the limitations on the power of the state to constrain the autonomy, privacy, liberty, proprietary, or other legally protected interests of individuals for protection or promotion of community health. (Gostin 2000, 4)

Using this power/duty/restraint formula, Gostin succeeds in focusing the field on the state's role in managing collective action to protect the population's health while still encompassing a diverse range of cooperating actors and related functions, including private actors and the health care system. His claims for public health law are broad enough to earn libertarian criticism: scholars have argued from diverse standpoints that Gostin and his colleagues in public health are expanding the jurisdiction of public health beyond its legitimate mission and into a realm of wrongful—and counterproductive—meddling in the autonomy of citizens (Epstein 2003; Hall 2003; Rothstein 2002). Yet for others, Gostin's definition may be too narrow. Regulatory researchers, for example, question the importance of distinguishing between public and private actors in health governance (Black 2008; Lobel 2004; Trubek 2006). Other commentators insist that public health law must include the role of law as a determinant and mechanism for the health effects of social and physical environments (Burris, Kawachi, and Sarat 2002; Magnusson 2007; Mariner 2009).

Debate over the boundaries of public health law plays out differently in the realm of public health law research. In defining PHLR, we are concerned not with what is right, proper, or legitimate to include within the jurisdiction of public health law but with whether law can be empirically shown to have an impact on the health of the population. Commentators might disagree on whether equality, for example, ought to be considered a public health issue, but that question is different from whether it is possible to empirically identify the ways in which law affects health inequalities. Empirical data can be highly salient to disputes about normative concepts and positions but cannot themselves resolve disputes about the legitimate scope of public health or public health law or the extent to which health promotion should be traded off against other social goods, such as civil liberties. PHLR, then, is distinguished from public health law by its focus on description, explanation, and prediction—that is, its focus on empirical investigation.

Research versus Scholarship

When we refer to “research,” we intend a particular meaning: the use of systematic methods within an explicit theoretical framework to collect and analyze data. PHLR seeks methodological rigor in all phases of research, from the careful articulation and operationalization of theory through thoughtful and innovative study design to analysis, interpretation, and dissemination.

PHLR includes both qualitative and quantitative studies using experimental, quasi-experimental, observational, or participatory designs. It ranges from health impact assessments gathering limited data on legal effects in order to inform policymaking in real time, to complex experiments and quasi experiments studying the effects of law on health over extended periods of time. Formal decision analyses, simulations, econometric analyses, laboratory and social experiments, survey, interview, and focus-group studies, systematic reviews, and meta-analyses are included, as is legal research to systematically and reproducibly collect, classify, and quantify laws and judicial decisions for analytic purposes (Hall and Wright 2008; Tremper, Thomas, and Wagenaar 2010).

Theory and methods may be drawn from a variety of disciplines in the social sciences, including epidemiology, biostatistics, law, sociology, history, political science, economics, anthropology, and psychology. From the natural sciences, PHLR imports the scientific method, approaching research questions with a hypothesis to be tested rather than a position to be defended; gathering data for the purpose of proving or disproving the hypothesis (or disproving a null hypothesis); and reaching conclusions based on a careful and restrained analysis and interpretation of all relevant data.

As we define it, public health law research is thus distinguishable from public health law scholarship. “Scholarship” embraces a range of nonempirical but no less valid and useful work on public health law, ranging from work grounded in philosophy or ethics (Ruger 2006), to doctrinal exegesis (Lazzarini and Rosales 2002), to the crafting of model laws, and to legal analysis arguing how the law ought to be applied in various situations (Ruhl, Stephens, and Locke 2003). What we call PHLR does not exhaust all forms of knowledge gathering or analysis concerning public health law. Indeed, public health law scholarship includes many outstanding and influential works that have shaped the field of public health law but do not fall within our definition of PHLR.

“Law” and “Public Health”

A key challenge in defining PHLR arises from the potential breadth of the definitions of “law” and “public health” (Magnusson 2007). In linking the two in PHLR, we take a broad sociological stance, encompassing not simply written laws on one side and morbidity and mortality on the other, but the whole range of institutions, practices, and beliefs through which laws influence health and the determinants of health. This is particularly important given that the timelines for law to influence health may be long and data on key outcome variables scarce; it may be important to examine the effects of law on mediating factors such as health behaviors. From the perspective of whether it is properly classified as PHLR, the key aspect of such a study is that it examines the relationship between a law variable and a public health variable.

Social epidemiology, the branch of epidemiology aimed at understanding social determinants of health (Berkman and Kawachi 2000), provides a theoretical framework into which PHLR can readily fit (Burris, Kawachi, and Sarat 2002). Most things human beings do, and most characteristics of our environments, have some impact on the level and distribution of health in a population. Whether styled as health inequities or health disparities, differences in health among identifiable subpopulations have become a major concern in health and policy (Commission on Social Determinants of Health 2008). Health law scholars, too, increasingly recognize the need to examine individual interests and choices through the lens of population health, recognizing that “the choices individuals exercise and the health risks they face are determined, to a large degree, by the environments they experience and the populations they comprise” (Parmet 2009, 268; Sage 2008). PHLR, however, does not encompass the full scope of social epidemiology. That is, we confine our definition of PHLR to the study of law and regulatory practices and not the full spectrum of contributing factors.

Another distinctive aspect of PHLR's conception of “law” is that it is not confined to “law on the books”: constitutions, statutes, judicial opinions, and so on. The mainstream of empirical legal research over the past thirty years has acknowledged the salience of law as it is implemented in practice and experienced by those it targets. Studies of legality or legal consciousness (Ewick and Silbey 1998), behavioral law and economics research (Jolls 2006), scholarship on compliance theory (Tyler 1990), scholarship on deterrence theory and tort law (Mello and Brennan 2002), and regulation and governance studies (Braithwaite, Coglianese, and Levi-Faur 2007) all explore this theme. PHLR is necessarily interested in the psychosocial mechanisms through which compliance is achieved (Tyler 1990), the range of regulatory techniques that may be deployed (Braithwaite, Coglianese, and Levi-Faur 2007), and how law “operates through social life as persons and groups deliberately interpret and invoke law's language, authority and procedures to organize their lives and manage their relationships” (Ewick and Silbey 1998, 20). Law is fundamentally a social practice embedded in institutions and implemented by agents. It is part of, not distinct from, the social environment whose influence on health is the focus of social epidemiology.

PHLR also properly encompasses both laws that were intended to affect population health and laws that have unintended health effects. What has been referred to as “interventional public health law” is law or legal practices that are intended to influence health outcomes or mediators directly. Likewise, “infrastructural public health law” establishes the powers, duties, and institutions of public health (Moulton et al. 2009). But much of the law that influences population health was not adopted for that purpose and may on its face seem to have no connection to health at all. For example, criminal laws aimed at controlling illicit drug use may increase the risk of users acquiring HIV (Friedman et al. 2006). Research that investigates the relationship of law and legal practices to population health falls within PHLR when it investigates health effects or otherwise deploys an explicit population health framework, whether or not the law on its face is oriented toward health. We label this important category of PHLR “incidental public health law.”

Finally, PHLR is distinguishable from other kinds of public health research in that it evaluates not merely the effectiveness of a public health intervention but also the effectiveness of law as the tool used to implement or facilitate the intervention. For example, research on whether abstinence-only education reduces teenage pregnancy is not PHLR merely because abstinence-only education happens to be required by law. PHLR does, however, encompass research on how abstinence-only education rules are implemented (Sonfield and Gold 2001) and whether the existence of state-level, abstinence-only legal mandates is associated with differences in states’ reproductive health outcomes.

Health Services Research and Public Health Systems and Services Research

Relationships between PHLR and several contiguous domains of empirical research are useful to delineate. Access to health care is an important determinant of population health, and health care is widely acknowledged to be a key component of the public health system (IOM 2003). The study of how law affects population health through the mediating structure of the health care system falls squarely within the definition of PHLR. PHLR therefore overlaps with the field of health services research (HSR), “the multidisciplinary field of scientific investigation that studies how social factors, financing systems, organizational structures and processes, health technologies, and personal behaviors affect access to health care, the quality and cost of health care, and ultimately our health and well-being” (Academy Health 2009). The impact of law on racial disparities in cardiac care outcomes, for example, is an important question for both HSR and PHLR.

The area of overlap, however, is limited to research that focuses on law as an independent variable and on population health (or an intermediate outcome with a well-demonstrated relationship to population health) as the outcome of interest. Research is not PHLR if it examines only the impact of some element of health care organization, financing, or delivery on health, without an important connection to law—for example, a study of the effect of capitated reimbursement in private managed care plans on the use of branded drugs.

Public health systems and services research (PHSSR) is an emerging field of study that “examines the organization, financing, and delivery of public health services within communities and the impact of those services on public health” (Scutchfield 2009, 169). PHLR overlaps with PHSSR to the extent that law is an important factor in the organization of public health systems and agencies and the delivery of public health services (Henry, Scutchfield, and Pérez 2008; Pérez and Larkin 2009). A study of racial disparities in the use of involuntary civil commitment, an important legal tool for public health, could be considered both PHSSR and PHLR to the extent it focuses on how the organization or operation of civil commitment influences the outcomes the system produces (Swanson et al. 2009). Conversely, PHSSR that examines the flow of resources to and within the public health system (Mays and Smith 2009), although it might well inform PHLR on the implementation of a legal intervention, would not itself be PHLR.

One feature of PHLR not shared by PHSSR or HSR is its consideration of incidental public health law, that is, the effects on population health of law, agencies, and private actors not commonly understood to be pursuing a public health mission. For instance, a growing body of cross-disciplinary research centers on the effects of criminal laws and the practices of criminal justice agencies, such as the police, on the spread of communicable disease (Burris et al. 2004). Research on this topic would fall under PHLR but not HSR or PHSSR.

A Logic Model of PHLR

A wide range of laws and legal practices affects the health of the population in cities, counties, states, and nations. Cataloging all such possible effects of law is impossible, and any schema for organizing such effects is characterized by trade-offs and simplifications. Nevertheless, the field of PHLR is advanced by a shared understanding of the range of possible effects of laws, and potential mechanisms for such effects, encompassed within the field.

The range of studies that empirically evaluate the effects of law on population health is depicted in figure 1. Generally, the independent variable in PHLR is some aspect of lawmaking, laws, or the activities of legal agents. These will be studied in relation to dependent variables that can be arrayed along the presumed causal chain that includes key mediators as well as the distal or ultimate outcomes of interest: population morbidity and mortality.

Figure 1

Logic Model of Public Health Law Research.

First are studies of policymaking, the factors that influence which laws are enacted and that shape the specific characteristics of the statutes and regulations adopted (path A in figure 1). In these studies, public health laws (or judicial decisions) themselves are the outcome variables, and political and other jurisdictional characteristics are often the main explanatory variables tested.

Paths B and C examine the principal mediators in the causal chain linking laws and health outcomes. Studies of legal practices (path B) focus on the implementation or enforcement of the law on the books, including how the law affects the structure or operation of various regulatory systems. Laws may vary considerably in how well they are implemented; for example, whether a legal mandate for health education in schools translates into all pupils receiving the education that legislators envisioned may depend critically on the appropriation attached to the bill. There are opportunities and resources for litigation in some matters and not others. Unfunded mandates, unclear statutory provisions, the failure to identify an administrative agency responsible for issuing implementing guidelines and overseeing the rollout of the new legal provisions, lack of political commitment, and many other factors may undermine implementation. Similarly, laws may induce varying levels of compliance by the regulated entities or population, depending on the degree of political resistance, the extent to which the administering agency is armed with effective enforcement mechanisms, the litigation environment, and many other factors. The completeness of implementation and the effectiveness of mechanisms for ensuring compliance with the law are critical elements influencing the law's effect on health outcomes. Legal practices studies explore these influences as mediators of the statute or regulation's impact on health.

Path C involves the study of the law's effects (as implemented through legal practices) on environments and health behaviors. We use the term environment broadly to refer to both the physical environment and social structures and institutions. Laws and their implementation affect social institutions and environments by creating or reducing opportunities, increasing or decreasing available resources, expanding or reducing rights and obligations, and creating incentives and penalties. Even private institutions, such as corporations or the family, are deeply influenced by law. Research in this area examines these mechanisms of influence and how they shape the conditions for people to be healthy.

Law may affect health behaviors both directly and by shifting the environmental conditions that make particular behavioral choices more or less attractive (path D). For example, land-use laws may determine where supermarkets and restaurants are located, affecting the availability of healthy food options and the healthfulness of the local residents’ diet. Ultimately, changes in environments and behaviors lead to changes in population-level morbidity and mortality (path E).

PHLR may examine health outcomes directly, or it may use mediating environmental and behavioral changes as proxy outcome variables. While directly measuring health effects is generally desirable because it provides more information to policymakers about the public health returns to lawmaking, a focus on mediating factors is often appropriate. For example, laws designed to improve rates of immunization with the human papillomavirus (HPV) vaccine might best be evaluated for their effects on the prevalence and burden of cervical cancer, but the time horizon for observing such effects is around forty years. Consequently, measuring rates of HPV vaccinations is a reasonable intermediate measure.

PHLR in Practice

The contours of PHLR as a distinct field are only beginning to emerge. Based on the existing scholarship in the field and the conceptual model we have described, table 1 shows a typology of the principal forms of PHLR studies. In this section, we describe the major methodological approaches relevant to studying each of the paths described.


Typology of Public Health Law Studies

Policymaking Studies

Studies of policymaking processes are a mainstay of political science and sociology. They explore issues such as the determinants of legislative, administrative, and judicial lawmaking (Law 2005; McDougall 1997; Waters and Moore 1990); lawmaking processes (Rosenberg 1991); and stakeholders’ use of law to achieve their goals (McCann 1994). Although in broad terms, the policy process does not vary by topic area, health policymaking has generated a substantial research literature focusing on how generic policymaking processes unfold in a health context. This literature treats policymaking processes as among the legal practices affecting the potential for law to promote health.

Advocacy groups have traditionally been crucial instigators of health law, and researchers of “legal mobilization” have studied how advocates have integrated legislation and litigation into their strategies (Ashe et al. 2003; Mamudu and Glantz 2009). The relative advantages of litigation versus legislative approaches have been investigated empirically and debated in public health law (PHL) scholarship (Jacobson and Soliman 2002; Jacobson and Warner 1999; Parmet and Daynard 2000; Wagenaar 2007), as have the factors influencing legislative outcomes and the legislative process (Backstrom and Robins 1995; Corrigan et al. 2005). Of particular interest to PHLR are studies examining how research evidence influences policymakers (Cochrane Collaboration 2009; Innvaer et al. 2002; Jewell and Bero 2008; Lavis, Oxman, et al. 2008). Other work has looked at the behavior and strategies of policy actors, for example, how they use devices such as preemption and litigation to shift policy battles into forums where they have a greater chance of success (Jacobson and Wasserman 1999), how community organizations may be brought more effectively into the lawmaking or law enforcement process (Markell and Tyler 2008), and how consulting can be used to more effectively translate research knowledge for policymakers (Jacobson, Butterill, and Goering 2005). There has been growing interest in the question of how model laws are developed for public health purposes, and whether and under what circumstances model legislation is more likely than other proposals to be enacted (Hartsfield, Moulton, and McKie 2007).

Both quantitative and qualitative methods may be appropriate for policymaking studies. Econometric analysis is useful for examining the extent to which various observable characteristics of a state or local government—such as the political party in control of the legislature and the health status of the population—predict the likelihood that a particular kind of law will pass. For example, researchers have used multivariate regression to examine predictors of state legislative action on childhood obesity (Boehmer et al. 2008; Cawley and Liu 2008). Such research may make important contributions by identifying “friendly” venues for experimentation with new public health law approaches and suggesting strategies for spreading successful policies to other jurisdictions.

For obtaining a rich understanding of the policymaking process, qualitative methods are unmatched. Interview methods are commonly and effectively used to understand the factors that lead policymakers to take or fail to take particular actions. Researchers have, for instance, conducted interviews with state legislators and their staff to study those factors enabling and inhibiting the passage of obesity prevention laws (Dodson et al. 2009). Content analysis is another useful method of exploring political deliberations that occur “on the record,” for example, legislative hearings and debate concerning particular public health issues or legislation, and the notice-and-comment process of administrative agency rule making. Researchers have used content analysis to explore, for example, the use of evidence and argumentation in debates over workplace smoking legislation (Apollonio and Bero 2009; Bero et al. 2001). Although it may be difficult to generalize the results of qualitative studies across jurisdictions, the high-resolution picture of the policymaking environment that they provide can have great value in formulating strategies for advancing evidence-based public health law.

Mapping Studies

PHLR includes studies that gather purely legal data for empirical purposes: information about the prevalence and distribution of specific laws (Gostin et al. 1996; Hodge et al. 2008), what levels of government have relevant authority (Horlick, Beeler, and Linkins 2001), and variations in the characteristics of the law across jurisdictions and over time (CDC 1999; Chriqui et al. 2008; Shaw et al. 2007; Wells, Williams, and Fields 1989). Methods may include content analysis of legal texts (laws, regulations, court decisions, etc.), qualitative research designed to elicit information from officials and others who are knowledgeable about the state of the law, or a combination of the two approaches (Horlick, Beeler, and Linkins 2001). Although no independent/dependent variable relationship is studied, these studies can be scientific—and therefore fall within the field of PHLR—if they involve the systematic collection and analysis of data using replicable methods.

Mapping studies often contribute information that is useful in its own right—state and local policymakers are keen to know what other jurisdictions are doing and what they might consider borrowing or learning from policy experiments in other jurisdictions. Mapping studies, however, are typically an early phase of larger projects designed to evaluate the magnitude and nature of the effects of laws on health. Properly conducted, they provide for the reliable and valid measurement of the key explanatory variable(s) in such studies. Thus, a rigorously conducted mapping study follows a systematic review protocol. It specifies a definition of the type of law being investigated, perhaps with explicit inclusion and exclusion criteria; a search methodology that acknowledges the strengths and weaknesses of extant databases; and a coding scheme identifying the main features of the laws, such as the population covered and enforcement mechanisms specified (Tremper, Thomas, and Wagenaar 2010). They may also characterize laws according to some overall scale of stringency, scope, or strength through transparent and reproducible means. For example, a recent mapping study of state laws regulating sales of sugar-sweetened beverages in schools coded laws according to seven substantive features and eight process features and then grouped the laws into “strong,” “moderate,” and “weak” categories (Mello, Pomeranz, and Moran 2008). We stress that analysis of this kind, though essential to empirical legal research, does not exhaust legal scholarship on laws, eliminate the serious challenges often entailed in interpreting what the law “is,” or replace serious discussion of what the law ought to be.

Implementation Studies

For a law to be effective, its implementation must be such that it will actually influence the behavior of its targets. The process of putting a law into practice can be understood in terms of a series of mediating factors, including the attitudes, management methods, capacities, and resources of implementing agencies and their agents; the methods and extent of enforcement; the relationship between the legal rules and broader community norms; and the attitudes and other relevant characteristics of the population whose behavior is targeted for influence. The text of the law and the resources appropriated for its enforcement constrain, but do not eliminate, the discretion of bureaucratic entities to reshape the rules to fit their existing culture and mission (Deflem 2004).

Implementation research classically starts with investigating the “transformation process” that occurs along path B in figure 1, the differences between the goals and methods of the law as explicitly or implicitly contemplated in the “law on the books,” and the “law on the streets” actually put into practice by legal agents charged with enforcing the law (Percy 1989). Case studies or other analyses of how health agencies have organized their mission or performed in a given mission are a common form of implementation research (Buehler, Whitney, and Berkelman 2006) and often investigate what legal powers an agency had or how it used them (Lawson and Xu 2007). Creative compliance and outright resistance by the targets of regulation also may be studied (Nakkash and Lee 2009). Implementation research in PHLR includes studies of the relationship among “legal infrastructure,” legal or other competencies, and agency function (Kimball et al. 2008). Such studies may explore the effects of law on private agencies operating under a legal authorization, such as the effect of legal authorization on syringe-exchange programs (Bluthenthal et al. 2007). Implementation researchers also measure proximate outcomes of new rules that may provide an early indication of their true behavioral effects, like the actual speeds observed on highways after a change in the nominal speed limit (Retting and Cheung 2008).

Research on legal practices in PHLR may investigate the means through which systems may be better governed or regulation better designed in order to achieve their goals. Although it has as yet had little impact on PHLR, the study of techniques of regulation and governance has become an important part of empirical legal research and scholarship (Ayres and Braithwaite 1992; Croley 2008; Moran 2002; Rhodes 1997). For nearly three decades, regulation in the United States and many other developed countries has exhibited an increasing pluralism, not just in spreading regulatory functions beyond government to private parties and public-private hybrids (Burris, Kempa, and Shearing 2008; Lobel 2004; Osborne and Gaebler 1993), but also in using a wide range of strategies beyond detailed rules backed by carrots and sticks (Parker and Braithwaite 2003). Contemporary regulators use cooperation, deliberation, education, competition, and other “soft” strategies that can be more effective than traditional command-and-control bureaucracy (Lobel 2004). Theory and research in governance have highlighted the importance of actors outside government—such as advocacy groups, corporations, and gangs—in managing the course of events in social systems and have investigated how these actors regulate governments and one another (Buse and Lee 2005; Scott 2002).

New regulatory and governance approaches have raised a fascinating range of empirical questions, from the use of the audit as a compliance tool (Power 1997) to the design and effectiveness of public/private and self-governing regulatory structures (Gunningham 2009; Ostrom 2005). This work resonates with research in behavioral law and economics, captured in Sunstein and Thaler's Nudge, which describes how regulators can creatively structure options to systematically influence behavior by means other than simple legal rules (Sunstein and Thaler 2008).

Because so much regulation is now conducted outside traditional bureaucratic frameworks (and indeed outside government), scholars working in this area begin with a generic definition of regulation and its constituent elements. “Regulation” is the “sustained and focused attempt to alter the behaviour of others according to defined standards or purposes in order to address a collective issue or resolve a collective problem” (Black 2008, 139). It uses a combination of basic strategies of control, including standard setting, monitoring, and enforcement (Scott 2001). The use of these strategies can be studied without regard to the particular mode through which the regulatory task is accomplished or what sort of entity is performing it (Braithwaite and Drahos 2000). This analytic approach allows researchers both to better capture the regulatory role of actors outside traditional regulatory agencies—for example, the role of Mothers Against Driving Drunk in fostering stronger social norms condemning drunk driving—and to offer more creative approaches to regulation, as exemplified by Nudge and other works of behavioral law and economics (Lobel and Amir 2009).

Although research in regulation and governance has been limited in public health law (Biradavolu et al. 2009; Burris 2008; Trubek 2006), its applicability is clear (Magnusson 2009). Public health services are provided by a diversity of public and private actors, and private entities play an important role in practicing and promoting standards of healthy behavior and health-promoting practices (IOM 2003). We recognize that complex systems like health care cannot simply be managed by top-down rules but require the use of many flexible tools, like professional self-regulation, ethics, accreditation, collaborative and deliberative decision making, continuous quality improvement, and market incentives (Braithwaite, Healy, and Dwan 2005; Berwick and Brennan 1995; Lobel 2004; Trubek 2006). Health governance around the world has been dramatically altered by the rise of new public/private hybrid institutions like the Global Fund to Fight AIDS, Tuberculosis and Malaria; the enormous wealth of the Gates Foundation; and the consolidation of authority over national health, safety, and intellectual property law in the World Trade Organization (Hein, Burris, and Shearing 2009; McCoy and Hilson 2009). The Framework Convention on Tobacco Control is a typical instance of the “soft law” approach, setting broad goals for national action but minimizing binding rules in favor of deliberation and flexibility. Legal scholarship has begun to explore the “constitutional” implications of these structural changes (Fidler 2004), but they have not been extensively investigated in PHLR.

Intervention Studies

Intervention studies evaluate the intended and incidental effects of legal interventions on health outcomes or key mediating factors that drive health outcomes. They may focus on “law on the books”—for example, examining the effect of states’ passage of graduated drivers license statutes on rates of injury-causing crashes (Foss, Feaganes, and Rodgman 2001)—or on legal practices, such as the effect of issuing restraining orders against perpetrators of domestic violence on future victimization (Harrell and Smith 1996). Intervention studies can be used to evaluate interventional health law but also to investigate the health effects of public health's legal infrastructure and the unplanned impact of what we have called incidental public health law. Intervention studies lie at the heart of PHLR, as they most directly address the core question of the field: What are the best legal tools to use to promote health?

Intervention studies can draw from an extensive methodological tool kit (table 1). The strongest designs are experimental or quasi-experimental designs with careful controls. Differences in how and when laws are implemented from jurisdiction to jurisdiction provide opportunities for quasi-experimental studies, although sophisticated methods may be required to account for other ways in which jurisdictions may differ from one another. Useful study designs and analytical methods for this purpose can be borrowed from the fields of econometrics and epidemiology (Ludwig and Cook 2000). Real-world, randomized experiments are extremely rare but have been employed to study judicial-branch reforms such as specialized courts (Gottfredson, Najaka, and Kearley 2003). Experimental studies can also be carried out using simulations, such as tabletop exercises (Dausey, Buehler, and Lurie 2007; Hupert, Mushlin, and Callahan 2002; Lurie et al. 2004).

We already have a substantial evidence base investigating the effectiveness of interventional public health law, ranging from single studies through literature reviews to meta-analyses and systematic reviews conducted by entities like the Campbell Collaboration (Campbell Collaboration 2009) and the U.S. Task Force on Community Preventive Services (Community Guide 2009). We also have a rich, if less well organized, research literature on incidental public health law. For example, researchers have studied the unintended consequences of HIV reporting laws on attitudes toward testing, time of testing, and willingness to be tested (Hecht et al. 2000; Tesoriero et al. 2008). Research on the health effects of infrastructural health law has been more limited.

Consistent with ecological models in public health, intervention studies may investigate how laws influence health by changing environments. For example, zoning rules, clean indoor air laws, and laws regulating the condition of rental properties can directly shape residents’ exposures to noise, environmental toxins, and stress, as well as their activity patterns, social connections, collective efficacy, and many other factors that appear to influence population health outcomes (Browning and Cagney 2002; Maantay 2002; Schilling and Linton 2005). Occupational health and safety laws affect workers’ exposure to hazardous conditions on the job. Product regulations protect consumers from a range of hazards arising from the use of products, from herbal supplements to firearms (Larsen and Berry 2003; Robson 2007; Vernick and Teret 2000).

Interventional research focuses not only on how the law changes physical environments, but also on how it may change the social environment in ways that affect health or health behaviors. Law may shape people's health knowledge and attitudes, the way they perceive the risks and benefits of different choices, the frames through which they view particular choices, and the social norms against which their health decisions are set. PHLR can measure any or all of these dependent variables, as well as changes in health behaviors. There are many examples: research on the effects of indoor smoking prohibitions on social expectations about exposure to secondhand smoke in public (Kagan and Skolnick 1993); the effect of laws requiring disclosure of calorie information on restaurant menus on consumers’ awareness of calorie content and attitudes toward the role of calorie information in food purchasing decisions (Bassett et al. 2008); and the effect of punitive laws concerning substance abuse during pregnancy on the prenatal care–seeking behavior of pregnant women (Poland et al. 1993), to name a few.

Finally, intervention research can illuminate policy choices under conditions of uncertainty. When problems or policy responses are new, there will naturally be little or no intervention research directly on point. Policymaking can still be informed by evidence about analogous policies or by an understanding of how law typically works to influence environments and behaviors, although all analogies are, of course, imperfect proxies for the situation at hand. An example is the area of legal restrictions on cell phone use by drivers. Although public health research recently has provided good evidence of the injury risk associated with this behavior, evidence of the effectiveness of different legal and policy approaches to the problem is not yet available. Until it is, lawmakers seeking to respond to what is clearly a significant health risk might be guided by the lessons learned about the design and enforcement of laws requiring seatbelt and helmet use and prohibiting driving under the influence of alcohol. Health impact assessment has also emerged as a useful way to use mixed methods to inform policy decisions with reliable data on possible effects, intended and unintended (Collins and Koplan 2009; Lee et al. 2007; Mindell et al. 2004). Finally, Monte Carlo simulations, widely used in the field of decision science but rarely used in PHLR (Studdert et al. 2007), offer an intriguing method for accounting for uncertainty about multiple parameters of importance to evaluating the likely effect of law.

Mechanism Studies

To advance the field, we need not only more evidence of law's health effects but also a greater understanding of how law has the effects it has. This is important for many reasons. Evidence of mechanisms strengthens specific causal claims. Understanding how a particular intervention influences environments and behavior facilitates the identification of further interventions, or of alternatives to eliminate superfluous requirements or unintended side effects and strengthen the mechanisms that are working. The better we understand how law works, the better we can use it, replicate its successes across jurisdictions, and extend its approach to other kinds of health risks. Informed by theories of health behavior, PHLR can develop and test models to explain how public health law effectuates change in health behaviors and ultimately health outcomes.

At the most basic level, laws encourage healthy, safe, and socially beneficial behaviors and discourage unhealthy, dangerous, and socially deleterious ones by shaping incentives (rewards) and deterrents (punishments). Though the theory may be simple, the process is not. Regulators have myriad levers and tactics that they can use to influence behavior directly or by manipulating the environment, and each choice in a regulatory system can and should be studied for its effectiveness, in both absolute terms and relative to less burdensome alternatives. Among the mechanisms are taxation and subsidies, changes in the information environment, changes in the built environment, and signals sent by tort litigation (Gostin, Thompson, and Grad 2007).

With respect to laws imposing outright prohibitions on particular behaviors, many of the key research questions relate to mechanisms of implementation and enforcement: What penalties are applied to violators of legal rules? What processes are used to detect violators? With what degree of certainty and swiftness will sanctions ensue from a violation? Sociolegal research drawing on disciplines such as psychology, criminology, and sociology has a great deal to contribute to mechanism studies in PHLR. The psychological literature has explored contingencies of reinforcement; criminologists have fleshed out the factors influencing deterrence; and sociology research has plumbed the normative effects of standard setting. Tom Tyler's influential work, for example, has shown the importance of experiences of procedural fairness to compliance with the law (Tyler 1990).

A classic example of compliance research in public health law is the investigation of primary versus secondary enforcement of seatbelt laws. Primary enforcement laws permit police to pull over motorists for not wearing a seatbelt, while secondary enforcement laws permit police to issue a ticket for not wearing a seatbelt only when the motorist has been pulled over for another reason. Because secondary enforcement relies primarily on social norms to enforce seatbelt use, with the threat of a ticket serving a greatly subordinate role, studies comparing these approaches to enforcement are essentially a test of the relative effectiveness of punishment versus social norms as a means of encouraging compliance (Dinh-Zarr et al. 2001). Among the most interesting findings of this PHLR is that the relative benefits of primary enforcement laws varied across population subgroups, with the greatest marginal benefit observed for those groups with lower rates of seatbelt use, including males, young people, African Americans, and Native Americans (Beck et al. 2007).

These and other studies make clear that deterrence is a complex phenomenon. The deterrent effect of law often seems to be assumed, without an appreciation of the factors influencing whether a person's behavior is influenced by a fear of detection or punishment. The threat of fines may have an effect different from the threat of jail (Wagenaar et al. 2007). Deterrence may be weak or incomplete because people are ill informed about what the law requires, because they do not believe violation will result in a sanction, because they are insulated from the adverse effects of a sanction (e.g., by insurance coverage), or because the sanction is not strong enough to outweigh the perceived benefits of noncompliance with the law (Mello and Brennan 2002). Uncertainty about legal standards can also have the opposite effect, leading to overcompliance in an attempt to avoid sanctions (Mello et al. 2006). Mechanism studies can examine all these phenomena. Survey methods, interviews, focus groups, and formal decision analysis can be used to deconstruct how people think through the costs and benefits of different actions. Analysis of administrative data on enforcement actions can shed light on the degree to which popular perceptions reflect what actually happens when a law is violated.

Another variable of interest in mechanism studies that focus on compliance with legal rules is the perceived legitimacy of the body imposing the legal rule. Even people who are aware of the law may not trust “the system,” or they may see strategies other than compliance as more useful to them in achieving their goals (Burris 1998). Studies of the perceived legitimacy of public health lawmakers and law enforcers may be particularly useful in understanding differences in compliance across population groups whose historical experience in the United States has led to different levels of trust in government.

Mechanism studies may also investigate how law shapes behavior in ways more subtle than outright prohibitions. How do regulatory tools such as taxes and subsidies, mandated disclosure or receipt of information, default rules, accreditation and certification, and delegations of authority to private institutions shape how individuals and organizations behave? When are these alternatives more effective and desirable than traditional, command-and-control regulation using rigid rules and penalties? For many of these forms of regulation, understanding the cognitive biases and heuristics that affect individual decision making about risk is critical (Kahnemann, Slovic, and Tversky 1982), and empirical research can examine how these biases influence health outcomes.

PHLR takes a number of forms, each utilizing diverse methods (table 1). By illuminating the paths we have delineated in our logic model, these forms each play important roles in establishing how law is being deployed to promote population health, and how and to what extent it is achieving its intended purpose.

Challenges Facing PHLR

We have argued that PHLR is a distinct and important field of research but that it faces a set of challenges shared with social research of other kinds. These include increasing methodological rigor, ensuring adequate research funding, identifying data sources, and ensuring the impact of PHLR on policy. We describe how each of these challenges takes shape in PHLR and explain why we are optimistic that they can be met.

Increasing Methodological Rigor

PHLR is part of a recent “explosion in empirical work” in law (Pfaff 2009). Some investigators are concerned that legal scholars are producing empirical work faster than the field can create the mechanisms necessary to ensure its rigor (Pfaff 2009). The fact that much PHLR is published in peer-reviewed health journals helps avoid one of the major problems confronting empirical legal studies more generally: the rarity of peer and expert editorial review in law journals. The further development of PHLR as a distinct field within empirical legal and public health research will be instrumental in defining and maintaining high standards of scientific rigor.

One challenge is how to draw new investigators with the right expertise into the field. Perhaps to a greater extent than other areas of empirical legal research, PHLR must grapple with how to integrate individuals who are primarily practitioners into the field. Their involvement in PHLR can improve research in many ways: practitioners bring an intimate knowledge of what the cutting-edge public health problems are and of the practical realities of policymaking and implementation, and they constitute a pipeline for putting research into practice. However, they typically lack both significant training in research methods and experience conducting empirical research. Similarly, even methodologically expert health researchers often lack any grounding in empirical legal scholarship, hampering their ability to conceptualize or measure legal influence on environments, behavior, or health outcomes.

The involvement of traditional legal scholars in PHLR raises similar challenges. Among the assets they bring to PHLR are a commitment to thinking deeply about the law's form, evolution, and function; the capacity for nuanced argument for or against particular legal approaches; and an appreciation of how social values and other normative considerations guide the law's path. Among the things they often lack are expertise in quantitative methods, an allegiance to the scientific method, and an inclination to think systematically about qualitative data collection and analysis.

These shortcomings can be surmounted through greater interdisciplinarity. Increasingly, law faculties are experiencing a “PhD-ification” (Pfaff 2009), bringing aboard junior scholars dually trained in law and economics, political science, or another social science discipline. These scholars are well positioned to move from empirical legal studies generally to PHLR specifically. Even more promising is the trend toward pursuing PHLR in multidisciplinary teams. Research partnerships between practitioners and scholars represent the future of the best research in this field, and interdisciplinary collaborations of scholars will become the “standard of care” very soon. Team-based approaches preclude the need for traditional legal scholars and practitioners to climb the steep learning curve necessary to conduct highly rigorous quantitative and qualitative investigations. At a minimum, however, these scholars and practitioners should receive enough training in empirical methods to become informed consumers of empirical studies and active participants in team decisions about study design (Lawless, Robbenholt, and Ulen 2010).

Another challenge relating to methodological rigor—one that cuts across fields of social science research—is how to adequately control for confounding variables in observational studies. This is particularly difficult in intervention studies that exploit cross-sectional variation in state laws, because states differ in so many other ways, many of which are not captured in data (Mello and Zeiler 2008). Such studies are usually retrospective, relying on extant data rather than employing prospective designs that collect data on all important variables. Statistical techniques such as fixed-effects models and difference-in-difference models provide a means of minimizing this problem in repeated cross-section studies, although analysts need to carefully consider whether such designs are appropriate given the nature of their data. Prospective studies and studies involving original data collection are even stronger responses to this problem but are expensive, time-consuming, and not feasible for studying some public health law questions.

Yet another methodological challenge for the field is interpreting empirical findings. Empirical legal scholars have lamented the limited development of approaches to dealing with the problem of induction (Epstein and King 2002). The field of epidemiology has developed and refined tools for evaluating when it is appropriate to draw causal inferences from statistical associations, but the same cannot be said for empirical legal studies (Pfaff 2009). The temptation to infer causality from association, or even to infer association from observing a small, nonsystematic sample of actors or jurisdictions, has been problematic in PHLR. Here, PHLR can and should draw on epidemiology: Sir Austin Bradford Hill's classic work on indicators of causality in environment exposures and disease, for instance, is useful in a broad swath of observational work (Hill 1965). Addressing the question, “What aspects of that association should we especially consider before deciding that the most likely interpretation of it is causation?” Bradford Hill listed strength, consistency, specificity, temporality, “biological gradient” (a dose-response relationship), biological plausibility, coherence with known facts, availability of experimental evidence, and availability of analogous phenomena.

As the factors inhibiting greater rigor are gradually overcome, PHLR will move from its current state, in which simple descriptive studies, nonsystematic qualitative work, and overly simplistic regression modeling are common, to a greater use of more sophisticated study designs. This process will be guided by the application of methodological standards developed in related fields of research. For example, the Society for Prevention Research has established criteria for judging whether laws and policies aimed at disease prevention are efficacious, effective, and ready for dissemination (Flay et al. 2005). The U.S. Preventive Services Task Force has developed a rating system for the strength of evidence for preventive health measures provided by different types of study designs, ranging from case reports to randomized controlled trials (Harris et al. 2001). The Campbell and Cochrane Collaborations are highly informative examples of how work in PHLR can be systematically evaluated and, through this evaluation, spurred to higher levels of rigor (Campbell Collaboration 2009; Cochrane Collaboration 2009). The process will also be driven by the increasing extent to which PHLR scholars view themselves as a professional community engaged in stimulating, collaborating in, and critiquing one another's work. Ultimately, a clear professional identity for the field will emerge, and at its core will be a commitment to the disciplined application of the scientific method and the most sophisticated methodological approaches to study public health law questions.

Ensuring Adequate Research Funding

Collecting, analyzing, and communicating research data all cost money. Although the problem of securing research funding is not unique to PHLR, it poses special problems in this field because many public health law researchers work in soft-money environments, and extramural funding for PHLR is sparse. The recent commitment of the Robert Wood Johnson Foundation (RWJF) to building PHLR represents a milestone in the field's evolution. First through its overall public health law portfolio (which has also included support for policy-related initiatives like the Substance Abuse Policy Research Program, Healthy Eating Research, Active Living Research, and PHSSR) and now through its program in Public Health Law Research, RWJF has supported PHLR at an unprecedented level. Previously, researchers relied on small programs such as the National Science Foundation's Law and Social Science program and the Centers for Disease Control and Prevention's (CDC's) short-lived Public Health Law for research opportunities, or they tried to shoehorn legal research projects into health research solicitations, for example, the NIH's and the CDC's requests for proposals on drug addiction or injury prevention. While these attempts have often been successful, they have limited the researchers’ ability to address the core areas of inquiry of PHLR, and they have precluded ready identification of studies that constitute the PHLR literature across a wide array of health topics. The RWJF initiative thus will pay for research and also build the field of PHLR by stimulating new investigators to enter the field, bringing researchers together, signaling what constitutes rigor in the field, and gathering together PHLR studies across diverse topics and methods.

The question of sustainability does arise, however. A longer-term and more broad-based commitment by research sponsors is needed to support the field's continued flourishing. This is most likely to occur if public health law researchers spend time educating sponsors and policymakers as to the significance of the problems that the field addresses as well as researchers’ ability to provide useful, credible answers. Empirical research examining how research influences policy has emphasized the importance of the relationships between researchers and their audiences (Lavis, Moynihan, et al. 2008). We hope that over time, law and policy studies will become seen as a core component of all public health research solicitations, in the way that ethics is increasingly viewed in the context of genomic, cancer, and other population health research.

Identifying Data Sources

Although a wide array of data sets on health risk exposures, health behaviors, and health outcomes are available, data on health laws are much harder to find (Hadfield 2006; Heise 1999; Mello and Zeiler 2008). Unlike many other areas of public health research, research on public health law and policy has developed few surveillance systems (Brownson et al. 2006; McGowan et al. 2003). Gathering information about the patterns of public health law adoption and implementation across states and local governments over time generally is done de novo in each research project.

Maintaining and updating databases of laws would dramatically improve researchers’ ability to conduct rigorous policymaking, mapping, intervention, implementation, and mechanism studies at low cost. High standards of transparency concerning the data-collection and coding protocols for such databases would allow subsequent researchers to update publicly available data sets at reasonable marginal cost. In the few instances in which such databases have been made available—for example, Ronen Avraham's contribution of a database of state tort reforms, funded by the National Science Foundation (Avraham 2006)—researchers have quickly made them the gold standard source of data in that area of research.

Such examples point to three steps that would help bridge the data gap in PHLR. First, research sponsors need to provide funding to compile databases. Second, database architects need to develop and share systematic protocols for finding and classifying relevant laws and regulations. These protocols are best developed in consultation with other researchers in the field so that definitions and typologies are widely recognized as appropriate and suitable for use in other studies. Third, databases need to be made publicly available and easy to locate online.

A final step that would contribute to the available data resources for PHLR is better linkages between researchers and public and private holders of relevant data. Hospitals and clinics, public health agencies, insurance companies, and product manufacturers are just some of the entities that hold a treasure trove of data relevant to PHLR. Building trust with these data holders, so that they feel confident that the information they share will be appropriately safeguarded and research findings responsibly reported, takes time and care but is well worth the effort. The widespread adoption of standard protocols for using, protecting, and reporting proprietary data could help establish trust, but much will remain dependent on carefully cultivated personal relationships.

Promoting Policymakers’ Use of PHLR Findings

The greatest challenge confronting PHLR is an all-too-common one in research: rigorous research may be relevant to policy in theory but too often is neither salient nor useful to policymakers and advocates in practice. The elements of the problem are well documented. Researchers are often isolated from the policy process and disconnected from policymakers and public health practitioners, making it difficult for them to identify salient topics for study and to produce knowledge that can both respond to policymakers’ concerns and drive policy agendas toward evidence-based innovation (Brownson, Chriqui, and Stamatakis 2009). Academics tend to follow their own interests and, in policymakers’ eyes, often do not successfully anticipate where policy agendas will be in the short and medium terms (Jewell and Bero 2008). Rigorous research—not to mention peer review and publication—takes time, but policy actors need information when they need it. Even when results are available, a lack of understanding of policymakers’ perspectives, time constraints, and level of scientific literacy hampers researchers’ ability to craft research reports that are likely to be read and understood by the policy and practice communities (Jewell and Bero 2008). For their part, policymakers report being overwhelmed by the volume of information presented to them, particularly the quantity of dense, detailed material (Sorian and Baugh 2002). State legislators face particular challenges owing to their lack of research training, the breadth of issues about which they must become knowledgeable, the short timelines involved, the high turnover of legislators and legislative staff, and the leanness of legislators’ staff and resources (Jewell and Bero 2008).

Solutions, like the problems, are not unique to PHLR (Greenhalgh et al. 2004; Mitton et al. 2007). Transferring knowledge from research to policy generally requires careful attention to a set of key questions: What is the precise information to be transmitted? Who exactly are the targets? Who are the best messengers? What media can most effectively be used to transfer the knowledge? For what purposes, exactly, is the information likely to be used (Lavis et al. 2003)?

Commentators emphasize the importance of ongoing contact between research producers and research consumers (Innvaer et al. 2002; Lavis, Moynihan, et al. 2008). Systematic reviews are repeatedly identified as an effective strategy for distilling a large amount of evidence into a usable form (Community Guide 2009; Fielding and Briss 2006; Jewell and Bero 2008; Lavis et al. 2003; Moulton et al. 2009; RWJF 2009; Sweet and Moynihan 2007). Policy briefs and other translational materials should be geared to the recipient and should “concretize impact”—that is, delineate specific benefits, harms, and costs, including the specific populations affected, and how particular policy strategies can alter them (Jewell and Bero 2008; Sorian and Baugh 2002). Nor does the entire responsibility lie with researchers. Effective practices have also been identified for organizations engaged in knowledge transfer (Lavis, Oxman, et al. 2008).

Training and mentorship within the field can move PHLR toward these practices, as can hands-on experience when researchers spend time working in policy settings. But there are no panaceas here. Even when research findings are effectively communicated to policymakers, a variety of forces can get in the way of policymakers' ability and willingness to translate evidence into policy proposals. Among these are the influence of interest groups, the power of anecdotes that contradict research findings, force of habit, cultural norms and values, and political compromises and expediency (Brownson, Chriqui, and Stamatakis 2009; Brownson et al. 2006; Jewell and Bero 2008).

At some level, there is little that researchers can do to overcome these forces. Nonetheless, well-designed translational materials and strategies that reflect an understanding of the constraints that policymakers face certainly have a greater chance of carrying the day than do research reports that are physically and cognitively inaccessible to policymakers. In addition, building strong relationships with public health law practitioners can help ensure that researchers and their work are responsive to practitioners’ needs. When the streams of problem, policy, and politics merge, events often move quickly (Brownson, Chriqui, and Stamatakis 2009). Policy actors thus need answers to specific questions when the time is right for them, not when it serves the needs of funding, peer-reviewed publication, and promotion. As a field, PHLR must be dedicated to both the long-term work that builds a rigorous evidence base for policy and to a practice of “translational service.” The latter includes maintaining contact with policy actors, pursuing models of scholarship that can generate answers on a policy-relevant timeline (such as synthesizing existing evidence and applying it to current issues, or conducting simulation studies), and taking time from academic pursuits to serve as consultants (Fielding and Briss 2006; Jacobson, Butterill, and Goering 2005). In the long run, all participants in PHLR—researchers, funders, consumers—have to work to narrow the gap between research that is fundable and research that is needed, and to invest in knowledge translation for its own sake. None of this is peculiar to PHLR, but researchers in this emerging field can aspire to be exemplary in their efforts, attending to and putting into practice the insights of research on translating evidence into policy.

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