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Two experiments tested the idea that economic transactions among friends are influenced by a norm of generosity. Whereas a fairness norm ought to promote agreement in offers between buyers and sellers, a generosity norm should promote altruistic disagreements caused by sellers offering lower prices than buyers—a reversal of the well-known endowment effect. Supporting the present account, in both studies, offers among friends showed a reversal of the endowment effect. Moreover, disagreement in buying and selling offers was stronger among friends than among acquaintances, and (in study 2) the perceived generosity of offers, but not their perceived fairness, mediated this effect. Finally, both studies demonstrated that generosity is asymmetric: whereas selling offers among friends were generous by all comparative standards, buying offers were not.

Democracy as a political form of social organization offers humanity its best prospect for freedom and peace. Today, it faces deliberate threats from totalitarian movements that rely on terrorist tactics. Democracy also faces threats from its own leaders because of the consequential nature of their judgment and decision making. This article examines how threats to democracy are perceived and managed. It is proposed that perception and management of threats to democracy represent a case of judgment and decision making under uncertainty. Relevant factors that influence policy decision making as it pertains to safeguarding democracies from threat are highlighted.

Democracy as a political form of social organization offers humanity its best prospect for freedom & peace. Today, it faces deliberate threats from totalitarian movements that rely on terrorist tactics. Democracy also faces threats from its own leaders because of the consequential nature of their judgment & decision making. This article examines how threats to democracy are perceived & managed. It is proposed that perception & management of threats to democracy represent a case of judgment & decision making under uncertainty. Relevant factors that influence policy decision making as it pertains to safeguarding democracies from threat are highlighted. References. Adapted from the source document.

Simulations of world history, like the real thing, are complex systems whose outcomes most often (if not always) constitute highly contingent events. Rarely (if ever) will researchers be able to find unqualified main effects that explain important outcome measures that affect the security and prosperity of the world community. The problem of contingency for testing hypotheses about the causes of certain types of outcomes (e.g., mass killing, starvation, economic collapse) from only a few simulations of history is discussed with reference to the Global Change Game simulation reported by Altemeyer (2003).

Literature on the psychology of evil has tended to focus on the motivations of perpetrators of collective violence, but almost no work has examined the special role of instigators. This article examines some of the differences between instigators and perpetrators of collective violence with a focus on Osama bin Laden. Compared with perpetrators, instigators are more powerful and less interchangeable, and they tend to rely on some form of nationalism to rally support. The article also examines the attributional bases of evil and how differences of construal can contribute to an escalation of violence.

Abstract
Stanley Milgram's work on obedience to authority is social psychology's most influential contribution to theorizing about Holocaust perpetration. The gist of Milgram's claims is that Holocaust perpetrators were just following orders out of a sense of obligation to their superiors. Milgram, however, never undertook a scholarly analysis of how his obedience experiments related to the Holocaust. The author first discusses the major theoretical limitations of Milgram's position and then examines the implications of Milgram's (oft-ignored) experimental manipulations for Holocaust theorizing, contrasting a specific case of Holocaust perpetration by Reserve Police Battalion 101 of the German Order Police. It is concluded that Milgram's empirical findings, in fact, do not support his position-one that essentially constitutes an obedience alibi. The article ends with a discussion of some of the social dangers of the obedience alibi.