No unique effect of intergroup competition on cooperation: Non-competitive thresholds are as effective as competitions between groups for increasing human cooperative behavior Newer:From Good Institutions to Generous Citizens: Top-Down Incentives to Cooperate Promote Subsequent Prosociality But Not Norm EnforcementOlder:The relationship between intertemporal choice and following the path of least resistance across choices, preferences, and beliefs PostedFebruary 7, 2017 AuthorAntonio Alonso Arechar TagsCooperation, Intergroup, 2017