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I have a longstanding interest in the political psychology of elite behavior and foreign policy-making. A core challenge for behavioral approaches to the study of international politics has been the so-called `aggregation problem:' that most of what we know about psychology and decision-making is at the individual level, but most high level foreign policy decisions are made in group contexts. My research on small group dynamics in international political decision-making examines this critical issue. My present research in this area uses large-scale group experiments to examine how small group settings affect the prevalence, severity and character of numerous psychological phenomena documented at the individual level. 

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