Behavioral approaches have been successful in challenging the rational actor model of international legal analysis and supplementing that model with empirical evidence.Footnote 1 Yet observing a set of features about the world requires ignoring or bracketing others.Footnote 2 Behavioral approaches retain their own inevitable blind spots, which are not necessarily products of flawed experimental design, but stem from the paradigmatic traits of these approaches. These blind spots derive from an emphasis on methodological individualism, positivism, and experimentation. This emphasis may obscure the social aspects of international legal decision-making. For example, behavioral approaches to international law often use experimental data to describe cognitive tendencies. In doing so, these approaches may not seek and likely will not have tools to discover the meaning of a state action, or the human actions that produce that state action. That latter inquiry requires “historical, ethnographic and other sociological methods that analyze social life outside of the experimental setting.”Footnote 3 In sum, behavioral approaches pursue both theoretical and empirical concerns different from those pursued in an interpretive mode of meaning-making.Footnote 4
Emerging scholarship on behavioral approaches has shed both critical and complementary light on conventional international law literature. Some scholars prioritize examining social environments for human rights violations and human rights offenders. They also seek to improve international law's compliance pull by proposing “commitment strategies and specifically designed social situations that harness human biases.”Footnote 5 Others, departing from the rational choice theory of international law, attempt to better understand treaty design by investigating a black box of state consent informed by cognitive biases, such as the status quo bias and the framing effect.Footnote 6 To be certain, behavioral approaches help generate useful knowledge on state actors and their actions. The main aim of this short contribution is not to debunk the merits of behavioral approaches, but to expose the inevitable blind spots of behavioral approaches and facilitate their self-reflectiveness so that these approaches can continue to improve their methods and modes of operating.
Explanation Versus Understanding
A cognitive behavioral model is applied, at a fundamental level, to explain rather than to understandFootnote 7 state actions through exposing cognitive biases and heuristics. To the extent the model explains state action, its interdisciplinary value may parallel that of neorealism, which explains state actions through power, and neoliberalism, which explains state actions through domestic preferences or utilities. As in the rationalist tradition in the study of international relations, a cognitive behavioral approach is positivist and is interested in causality between international law and state actions. Thus, a cognitive behavioral approach is not meant to “understand” states and their actions. Understanding a state action requires an interpretation of what the state meant in taking that action. Granted, international law may benefit from the particular mode of explanation behavioral approaches employ, and the resulting prediction of state action extrapolated from human behaviors.Footnote 8 Nonetheless, such an explanation comes from the external, objective perspective of researchers who employ behavioral approaches. This form of explanation features a different “style of reasoning”Footnote 9 than that of understanding state actions from within, that is, from the internal, subjective perspective of states themselves.
Behavioral approaches focus predominantly on effortless heuristic-based cognition (“a predominantly unimodal view of information-processing”), rather than effortful deliberation-based cognition (“a deliberative mode of thought that functions by careful application of normative rules”).Footnote 10 In some respects, the paradigmatic salience of behavioral approaches on the heuristic mode of thinking lies in the ontology of these approaches, which is methodological individualism. The behavioral approach, through experimentation as its predominant method, focuses on what an actor may reveal rather than on the meaning of an action itself, which requires an account of collective, inter-subjective meaning beyond the mere description of an actor's subjective meaning.Footnote 11 For example, behavioral approaches might explain opinio juris as an aggregation of “intrinsic” law-abiding motivations from individual states.Footnote 12 However, such an explanation might not adequately construct an international customary rule in a way in which states “credit” one another with the rule through “mutual recognition of subtle normative expectations.”Footnote 13 In this vein, some critics warn that a behavioral approach's systematic focus on heuristic thinking may generate an “unrepresentative sample of findings” in legal decision-making.Footnote 14
How can one mind, the experimenter's, know the object of another, the mind being experimented upon? First, researchers may observe social actors’ behaviors through the researcher's own sensory data, that is, what they see, hear, and record. Researchers test their hypotheses on certain behavioral patterns and prove or disprove them by studying those data sets. Through this scientific process, researchers may explain and even predict certain human phenomena. This is a typical example of positivism, as seen in the natural sciences. The cardinal assumption of scientific positivism is that an observed object, the social actor, is absolutely independent of an observing subject, the researcher.Footnote 15 For example, when a particle physicist stares at an electron, that electron never stares back at the physicist. The physicist's only concern is to study, or interpret, the data produced by the electron's movement patterns. This is called the single hermeneutic. To the extent that the paradigmatic nature of inquiry by behavioral approaches concerns explanation, these approaches deal with the single hermeneutic. The assumption is that the experimenter would not communicate with the subject being experimented upon.
However, the subject being experimented upon does think and interpret for himself or herself. The subject can communicate with the researcher and take his or her cue from the researcher. Then, all positivist bets are off. This epistemological characteristic of an “interpretation of an interpretation” unique to human sciences is called the “double hermeneutic.”Footnote 16 It is synonymous with the notion of “reflexivity,” which “refers to an awareness of the discourses within which both the research and the researcher are embedded, as well as to the ways in which the contexts of the research refer back, reflexively, to prior experiences and knowledge constructs.”Footnote 17 As anthropologists or interpretive sociologists often do, researchers must interpret social actors’ meanings and reasons for their behaviors from the latter's perspective.
While an electron does not change its behavior due to a particle physicist's theory, social actors may intentionally conform their behaviors to a researcher's idea. For example, Keith Conners, a psychologist, was an early advocate for proactively identifying and treating “attention deficit/hyperactivity disorder” (ADHD) among children.Footnote 18 According to Conners’ original investigation, only 1 or 2 percent of children would be subject to this disorder. While his research did raise awareness of ADHD, it proved to be a victim of its own success. He was later shocked to witness a skyrocketing over-diagnosis of ADHD, up to 15 percent of children, which he described as a “natural disaster of dangerous proportions.”Footnote 19 This ostensible ADHD epidemic was attributable to a “concoction to justify the giving out of medication at unprecedented and unjustifiable levels.”Footnote 20 The identification of the disorder became a “self-fulling prophecy.”Footnote 21
Prospect theory, the queen of all heuristic theories, generates several suppositions such as loss aversion, endowment effects, or status quo bias that create framing effects. Those framing effects explain how people may evaluate the same situation differently depending on how the situation is portrayed.Footnote 22 A state, upon being informed about prospect theory, may proactively seek to implement the theory. It may seek to avoid state responsibility by strategically characterizing its wrongdoing differently, that is to say, in a more innocuous fashion. For example, discriminatory trade restrictions, which violate World Trade Organization rules, may be framed as legitimate safety or environmental policies, which exculpate such a violation.Footnote 23 This behavior could indicate another manifestation of a self-fulfilling prophecy as an observed social actor (in this case, the state) frames their behavior in terms of the framing effect theory originally advanced by an observer (the researcher).Footnote 24
Likewise, in a military operation, the size of collateral damages in the form of civilian causalities speaks to the proportionality test under the law of war.Footnote 25 If one style of wording may somehow render the operation more innocuous and therefore agreeable under this test, that style of description would be not only preferred but also encouraged in the future, despite potential costs. Here, as in the previous example of the ADHD study, the framing will be learned by the observed, the military personnel, in a way that helps rationalize a military choice. Indeed, many commentators warn about this possibility, especially in light of controversial drone strikes. Conor Friedersdorf argues that the label of a “surgical” drone strike evokes an image of precision corresponding to surgeons and thus tends to underestimate collateral casualties.Footnote 26 Michael Boyle observes that employing the nebulous label of “militants” to the targets of drone strikes entails a “guilt by association” approach, which “implies an indifference to the combatant status of the potential victims that is at odds with the legal and moral responsibility to make this determination before killing them.”Footnote 27
Relatedly, in the “law and development” debate, mainstream development theorists argue that the promotion of Western-style rule of law is a prerequisite for economic development in developing countries. Unfortunately, however, this theory of economic neoliberalism, or the so-called “Washington Consensus,” does not seem to have demonstrated noticeable success, although foreign investors often accept it. Dani Rodrik and his co-authors argue that:
Obviously, the presence of clear property rights for investors is a key, if not the key, element in the institutional environment that shapes economic performance. . . . But nothing is implied about the actual form that property rights should take. We cannot even necessarily deduce that enacting a private property rights regime would produce superior results compared to alternative forms of property rights.Footnote 28
Here, the targets of research (developing countries) may self-fulfill the researcher's theory (the neoliberal development theory) by following it and adopting Western style rule of law. Nonetheless, economic development in a particular developing country may be attributed to different factors from Western style rule of law.
Therefore, there exists an inevitable “epistemic gap between the world of research and that of actual practice.”Footnote 29 Social scientists often “construe the world as a spectacle, as a set of significations to be interpreted, rather than as concrete problems to be solved practically.”Footnote 30 Such an epistemic gap might generate tensions between the observer (an experimenter who engages in behavioral research) and the observed (a social agent who is the subject of the experiment) over whose version of legal reality must form the basis of a corresponding normative product. Consider a field manual. Should a field manual be informed by a military commander's own account of the battlefield experience or a behavioral researcher's interpretation of experiment data regarding that commander's behaviors?Footnote 31
Behavioral approaches hinge principally on the hard-wired brain structure and therefore must be universal across tempo-spatial contexts. In other words, behavioral approaches assume uniformity of human decision-making based on common cognitive characteristics. But this assumption may be challenged. Consider the military context. Is every commander in every combat situation prone to identical military decision-making as long as the main parameters, such as civilian casualties, remain the same? Would a Roman centurion, in pursuit of bellum Romanum (“all-out-war”), reach the same choice in a battlefield as a NATO commander who is attentive to an emerging international custom of “responsibility to protect”? This situation-specific decision-making appears to provoke more effortful non-heuristic thinking (which cognitive behavioral approaches do not examine) than effortless heuristic thinking (which these approaches study). In most cases, critical military decision-making is a product of culture, training, and even philosophy. Indeed, a good military leader requires a long period of education, training, and battle experience, and a high moral character. These sociological aspects do not appear to be the main theoretical concern of behavioral approaches.
The international relations/international law field profits from cognitive behavioral research in explaining the cognitive origins of state actions. Yet this essay has raised the question of whether the study of international law can be a science, in that it conjectures a hypothesis, tests that hypothesis, and formulates a theory therefrom. Is the main mission of international legal study to explain and predict state action, as a Keplerian theory explains and predicts planetary movement? A state, let alone the human beings behind it, is different from a rock or a mouse. International law may benefit from experimentation and measurement to better capture underlying facts. However, as a norm-centered field of study, international law's ultimate mission is to interpret, judge, and discipline, which does not necessarily dovetail with the nature of inquiry pursued predominantly by behavioral approaches.
In closing, the main role of behavioral approaches might better be understood as advisory rather than instructive. Experimental and other empirical findings may demonstrate the existence of certain mental mechanisms that play out under certain conditions. These findings may inform certain aspects of treaty design and, to that extent, may stimulate normative consideration. Nonetheless, such findings themselves cannot, and should not, replace normative judgments, much as a judge must ultimately determine the outcome of litigation by his or her interpretation, even with the aid of expert witnesses, including psychologists. Behavioral approaches may have the first word on international law, but not the last one.