Acyclic digraphs arise in many natural and artificial processes. Among the broader set, dynamic citation networks represent an important type of acyclic digraph. For example, the study of such networks includes the spread of ideas through academic citations, the spread of innovation through...

Common law evolves not only through the outcomes of cases but also through the reasoning and citations to precedent employed in judicial opinions. We focus on citations to precedent by the U.S. Supreme Court. We demonstrate how strategic interaction between justices during the Court’s...

International relations and legal theories on treaty design and participation have relied heavily on the structure of bargaining problems, the allocation of power in the international system, and interest group politics to explain states’ preferences for cooperation. Using experiments drawn...

International relations theories have largely ignored the role of individual people who play key roles in treaty design and participation; instead, that scholarship assumes that other factors, such as treaty enforcement, matter most. We use experiments drawn from behavioral economics and...

Acyclic digraphs arise in many natural and artificial processes. Among the broader set, dynamic citation networks represent a substantively important form of acyclic digraphs. For example, the study of such networks includes the spread of ideas through academic citations, the spread of...

Previous research has indicated that higher levels of social interactions, or greater social capital, tend to create higher levels of civic engagement and social trust. We used a large, nationally representative longitudinal survey of youth to examine the relationship between social capital, as...

Why do individuals engage in personally costly, partisan activities that benefit others? If individuals act according to rational self-interest, then partisan activity occurs only when the benefits of that activity exceed its costs. However, laboratory experiments suggest that many people are...

Altruism refers to a willingness to pay a personal cost to make others better off. Past research has established a link between altruism and political participation, primarily among college students. We show that dictator game behavior predicts support for humanitarian norms and donations to...

Models of political participation have begun to incorporate actors who possess "social preferences". However, these models have failed to take into account the potentially incongruent political goals of different social preference types. These goals are likely to play an important role in...