Aid donors pursue a strategy of targeted development with regard to recipient states. The determinants of aid allocation have shifted significantly. Industrialized states are increasingly unable to insulate themselves from spillovers caused by underdevelopment abroad. Donors attempt to use aid to decrease these spillovers, targeting developing countries where the effects on the donor are anticipated to be large. Once a recipient is chosen, concern for recipient government capacity guides the composition of aid. Empirical analysis of aid allocation from 1973 to 2012 demonstrates that, while explanations based on security and economic ties to the donor explain allocation well in the Cold War, the post-2001 period is best understood by incorporating a role for targeted development. This framework helps synthesize various findings in the aid allocation literature and has important implications for studying aid effectiveness.

This paper challenges the long-standing belief that changes in patterns of war and war making caused the emergence of large territorial states. Using new data describing the universe of European states between 1100 and 1790, I find that small political units continued to thrive well into the “age of the territorial state.” Some scholars have argued that changes in the production of violence led to the dominance of geographically large political units during this era. In contrast, I find evidence that variation in patterns of economic development and urban growth caused fragmented political authority in some places and the construction of geographically large territorial states in others. Exploiting random climatic deviations in the propensity of certain geographical areas to support large populations, I show via an instrumental-variables approach that the emergence of towns and cities caused the formation of small and independent states.

The dominant approach to the study of international political economy assumes that the policy preferences of individuals and groups reflect economic self-interest. Recent research has called this assumption into question by suggesting that voters do not have economically self-interested preferences about trade policy. We investigate one potential explanation for this puzzling finding: economic ignorance. We show that most voters do not understand the economic consequences of protectionism. We then use experiments to study how voters would respond if they had more information about how trade barriers affect the distribution of income. We find that distributional cues generate two opposing effects: they make people more likely to express self-serving policy preferences, but they also make people more sensitive to the interests of others. In our study both reactions were evident, but selfish responses outweighed altruistic ones. Thus, if people knew more about the distributional effects of trade, the correlation between personal interests and policy preferences would tighten. By showing how the explanatory power of economic self-interest depends on beliefs about causality, this research provides a foundation for more realistic, behaviorally informed theories of international political economy.

Why have peace-building and reconstruction efforts so frequently failed to create durable institutions that can deter or withstand resurgent violence in volatile sites of cyclical conflict? Extant theory predicts that new institutions can help overcome violence and mitigate commitment problems in postconflict contexts by reducing uncertainty in inherently uncertain environments. By contrast, this article argues that postconflict institutions often prove limited in their abilities to contribute to durable peace because they offer wartime elites new venues in which to pursue conflict-era agendas. Through a micro-analysis of efforts to build the rule of law in eastern Democratic Republic of Congo, I demonstrate that wartime elites capture and instrumentalize new legal institutions to maximize their intra- and inter-organizational survival; to pursue economic, military, and political agendas behind the scenes; and, in some cases, to prepare for an imminent return to war.

Regime type has opposing effects on terrorism. If a regime constrains the executive branch, then terrorism may be more prevalent. If, however, a regime allows all viewpoints to be represented, then grievances may be held in check, resulting in less terrorism. Regimes that value constituents’ lives and property will also act to limit attacks. We formulate a game-theoretic model, containing a terrorist group and targeted government, that captures these opposing forces and supports a nonlinear relationship between regime type and terrorism. This model indicates how diverse samples in the literature can result in different relationships between regime type and terrorism. Seldom does it support the positive relationship that is prevalent in the terrorism literature. We apply a large variety of empirical techniques to show that regime type has a robust inverted U-shaped impact on various terrorism measures. Foreign policy variables (e.g., alliance with the United States) are not a robust influence on terrorism.

Bargaining models play a central role in international relations, particularly in the study of conflict. A common criticism of this approach is that it fails to account for nonmaterial (e.g., psychological) factors that may influence the bargaining process. We augment a standard bargaining model by allowing actors’ preferences over conflict to diverge from the “fitness” payoffs (e.g., resources) typical of such models. Preferences are subject to evolutionary forces—those who attain high fitness reproduce more. We find that (1) there is a trade-off where being “irrationally” tough leads to better bargains but also more inefficient conflict; (2) actors develop behavioral biases consistent with empirical findings from psychology and behavioral economics; and (3) these behavioral biases inevitably lead to conflict. By bridging the strategic and psychological approaches to conflict, our models provide new insights into questions such as how changes in military and intelligence-gathering technology affect the likelihood and expected cost of war, and how to interpret the purported decline of violence over recent human history.

This paper argues that the climate came to take on a geophysical rather than a bioecological form in global governance because it emerged from a dynamic, interactive process between states and scientists. In the 1950s, state agencies, especially elements of the US military, steered and accelerated the development of the geophysical sciences, which set the discursive frame within which climate politics now plays out. In the 1990s, scientists and IO experts responded to states' requests to study carbon sinks by expanding the climate to include new greenhouse gases and land-use practices. Drawing on Science and Technology Studies as well as discursive theories of global governance, I theorize object constitution as a process of co-production in which states steer the development of scientific knowledge and scientists assemble epistemic objects. This contingent interaction of political and scientific actors shapes the form and content of global governance objects. The argument extends and challenges the epistemic communities literature and theories of the global governance life cycle that focus on how problems end up on the agenda of states rather than the processes of problem construction.

Do normative arguments change what political actors do and if so, how? Rather than using the pure force of abstract moral reasoning, states often try to move the locus of contestation to an arena where they can make practical progress—the evidence or the empirical facts in support of their argument. This paper analyzes how states try to bolster their position first by constructing an argument in which an action represents part of their argument and then by performing that action to make the argument seem more convincing. I call this mechanism rhetorical adduction. The paper challenges theories of communication that deny a causal role to the content of normative arguments and diverges from a leading view on argumentation that arguments have their effects through persuasion. Integrating strategic argumentation theory with theory from psychology about how people make choices based on compelling reasons rather than cost-benefit analysis, I also use theory from sociology on how people resolve morally complex situations through the performance of “reality tests.” I illustrate the mechanism using a case from the Indo-Pakistani war of 1971 when initial resistance to recognizing the putative state of Bangladesh after India's invasion of East Pakistan was reversed as a result of an argument that Indian troop withdrawal meant that international norms were not violated.

The rapid growth of trust funds at multilateral development organizations has been widely neglected in the academic literature. We examine sovereign donors' choices among various trust fund options and contend that the choice among the different trust funds involves a fundamental trade-off: larger funds provide donors with “burden-sharing” benefits, but each donor can better assert its individual preferences in a fund with fewer other donors. The theoretical considerations yield testable hypotheses on a range of factors affecting this fundamental trade-off, most notably the area of the trust fund's intervention and donor countries' competing domestic interests. A large-N analysis of participation decisions of OECD/DAC donors in trust funds over the past decade mostly corroborates these hypotheses. In particular, ex ante preference alignment among donors as well as indicators for global activities and fragile states aid are robust determinants of participation in (large) multi-donor funds. In contrast, a donor tends to prefer a single-donor fund in areas where its national interests dominate.

Why do some actors in international politics display remarkable persistence in wartime, while others “cut and run” at the first sign of trouble? I offer a behavioral theory of resolve, suggesting that variation in time and risk preferences can help explain why some actors display more resolve than others. I test the theory experimentally in the context of public opinion about military interventions. The results not only help explain why certain types of costs of war loom larger for certain types of actors but also shed light on some of the behavioral revolution's contributions more broadly.

It remains contested whether peacekeeping works. The impact of peacekeepers’ actions at the local subnational level for overall mission success has lately received critical attention. Local peacekeeping is expected to matter because it reassures local actors, deters resumption of armed hostilities, coerces parties to halt fighting, and makes commitment to agreements credible. Thus peacekeepers affect the relations between central and local elites and avoid the emergence of local power vacuums and areas of lawlessness. This study uses new subnational data on the deployment of United Nations peacekeepers. It uses matching and recursive bivariate probit models with exogenous variables for temporal and spatial variation to deal with possible nonrandom assignment of the treatment. We demonstrate that conflict episodes last for shorter periods when peacekeepers are deployed to conflict-prone locations inside a country, even with comparatively modest deployment. The effect of peacekeeping on the onset of local conflict is, however, less clear cut.

The treatment of foreign investment has become the most controversial issue in global governance. At the center of the controversy lies the mechanism of investor-state dispute settlement (ISDS), which allows private firms legal recourse against governments if government interference has degraded their investment. Using newly released data covering 742 investment disputes, I assess some of the central claims about ISDS. I argue that the regime has indeed undergone an important shift: a majority of claims today deal not with direct takings by low-rule-of-law countries, but with regulation in democratic states. Such “indirect expropriation” claims have seen a precipitous decrease in their odds of legal success over the past twenty years. They are also far less likely to result in early settlement. These parallel trends may be a result of a rise in strategic litigation by investors whose aim is not only to obtain compensation but also to deter governments' regulatory ambitions.

National security is one of many fields where experts make vague probability assessments when evaluating high-stakes decisions. This practice has always been controversial, and it is often justified on the grounds that making probability assessments too precise could bias analysts or decision makers. Yet these claims have rarely been submitted to rigorous testing. In this paper, we specify behavioral concerns about probabilistic precision into falsifiable hypotheses which we evaluate through survey experiments involving national security professionals. Contrary to conventional wisdom, we find that decision makers responding to quantitative probability assessments are less willing to support risky actions and more receptive to gathering additional information. Yet we also find that when respondents estimate probabilities themselves, quantification magnifies overconfidence, particularly among low-performing assessors. These results hone wide-ranging concerns about probabilistic precision into a specific and previously undocumented bias that training may be able to correct.

The international tax system is a complex regime composed of thousands of bilateral tax treaties. These agreements coordinate policies between countries to avoid double taxation and encourage international investment. I argue that by solving this coordination problem on a bilateral basis, states have inadvertently created opportunities for treaty shopping by multinationals. These opportunities, in turn, reduce the potency of fiscal policy, put pressure on governments to change their domestic tax laws, and ultimately constrain state autonomy. This constraint is theoretically distinct from the usual race-to-the-bottom story and it generates different testable implications. I use a motivating case study to show how multinationals leverage the structure of the treaty network to reduce their tax burden. Then, I develop a new measure of treaty-shopping opportunities for firms in 164 countries. Where the proliferation of tax treaties allows multinationals to engage in treaty shopping, states’ fiscal autonomy is limited, and governments tend to maintain lower tax rates.

Why are some politicians guided by a sense of obligation toward international law but others are not? Why do some politicians have a social as opposed to an egoistic preference over compliance with international legal rules? Existing approaches largely assume that the structural features of the compliance environment shape preferences. As a result, they neglect the heterogeneity across decision makers' subjective beliefs in the legitimacy of international law, which is critical for explaining who exhibits a sense of obligation and has a non-egoistic preference for compliance. Drawing upon a large body of psychological research on social identity and influence, I argue that obligation toward international law has a behavioral foundation shaped by cosmopolitan social identity. Using data from an original survey of German politicians that includes two compliance experiments, I show that politicians with a high degree of cosmopolitanism are driven by a sense of legal obligation that results in a social preference for compliance while those low on cosmopolitanism lack the same sense of normative respect. Replicated in a second experimental study conducted with a convenience sample, my results indicate that strategic rationality in compliance applies, but only to a particular set of actors. By illuminating the psychological underpinnings of obligation toward international law, this study contributes to a richer understanding of compliance preferences and builds a bridge between instrumental and normative models.

To examine the extent to which foreign aid reaches people at different levels of wealth in Africa, I use household surveys to measure the subnational distribution of a country's population by wealth quintiles and match this information to data on the location of aid projects from two multilateral donors. Within countries, aid disproportionately flows to regions with more of the richest people. Aid does not favor regions with more of the poorest people. These findings violate the stated preferences of the multilateral donors under study, suggesting that the donors either cannot or are not willing to exercise control over the location of aid projects within countries. The results also suggest that aid is not being allocated effectively to alleviate extreme poverty.

Using a population-based survey experiment, this study evaluates the role of in-group favoritism in influencing American attitudes toward international trade. By systematically altering which countries gain or lose from a given trade policy (Americans and/or people in trading partner countries), we vary the role that in-group favoritism should play in influencing preferences.

Our results provide evidence of two distinct forms of in-group favoritism. The first, and least surprising, is that Americans value the well-being of other Americans more than that of people outside their own country. Rather than maximize total gains, Americans choose policies that maximize in-group well-being. This tendency is exacerbated by a sense of national superiority; Americans favor their national in-group to a greater extent if they perceive Americans to be more deserving.

Second, high levels of perceived intergroup competition lead some Americans to prefer trade policies that benefit the in-group and hurt the out-group over policies that help both their own country and the trading partner country. For a policy to elicit support, it is important not only that the US benefits, but also that the trading partner country loses so that the US achieves a greater relative advantage. We discuss the implications of these findings for understanding bipartisan public opposition to trade.

A prominent explanation of war claims that international conflict can result when shifts in bargaining power induce the declining power to behave aggressively today because the rising power cannot credibly commit to not behave aggressively tomorrow. This paper asks whether individuals respond to shifting power in ways assumed by these models. Rather than use abstract laboratory-based bargaining games as in other work, I use vignettes describing the United States in an international bargaining situation to explore the microfoundations of power transitions models empirically. The vignettes vary whether the individual is a member of a declining or a rising power and whether there are previous public commitments to the status quo division of territory. Subjects propose a response the United States should make and then explain their decision in their own words. I apply new methods for analyzing these open-ended responses. Consistent with predictions from the behavioral literature, I find important asymmetries in behavior across these conditions as well as substantial heterogeneities in individuals' motivations for their decisions. The results of the experiments suggest potential ways that power-transition models should be refined to have a firmer behavioral basis.

Self-determination claims have abounded in the international system since the end of World War II. But these claims have not emerged everywhere. About half of the states in the international system face some challenge related to self-determination today. Why do some states face these demands while others do not? We argue that ethno-national self-determination is one of many identities with which individuals can find affinity. While an international norm related to self-determination has developed globally, its use as a basis for political claims has diffused regionally. Diffusion of self-determination occurs through observation of others using self-determination as a basis of organization, generating a sense of legitimacy, sensitivity to related grievance, and perceptions of tangible benefits related to self-determination identification. We test this empirically on global data on self-determination claims from 1960 to 2005 and find evidence of spatial diffusion, suggesting that self-determination is, to some extent, contagious.

While increasing trade and foreign direct investment, international trade agreements create winners and losers. Our paper examines the distributional consequences of preferential trade agreements (PTAs) at the firm level. We contend that PTAs expand trade among the largest and most productive multinationals by lowering preferential tariffs. We examine data covering the near universe of US foreign direct investment and disaggregated tariff data from PTAs signed by the United States. Our results indicate that US preferential tariffs increase sales to the United States from the most competitive subsidiaries of multinational corporations operating in partner countries. We also find increases in market concentration in partner countries following preferential liberalization with the United States. By demonstrating that the gains from preferential liberalization are unevenly distributed across firms, we shed new light on the firm-level, economic sources of political mobilization over international trade and investment policies.