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  • September 2, 2014
  • Article

Development of In-Group Favoritism in Children's Third-Party Punishment of Selfishness

By: Jillian J. Jordan, Katherine McAuliffe and Felix Warneken
When enforcing norms for cooperative behavior, human adults sometimes exhibit in-group bias. For example, third-party observers punish selfish behaviors committed by out-group members more harshly than similar behaviors committed by in-group members. Although evidence... View Details
Keywords: Ontogeny; Cooperation; Equality and Inequality
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  • Article

Give What You Get: Capuchin Monkeys (Cebus Apella) and 4-Year-Old Children Pay Forward Positive and Negative Outcomes to Conspecifics.

By: Kristin L. Leimgruber, Adrian F. Ward, Jane Widness, Michael I. Norton, Kristina R. Olson, Kurt Gray and Laurie R. Santos
The breadth of human generosity is unparalleled in the natural world, and much research has explored the mechanisms underlying and motivating human prosocial behavior. Recent work has focused on the spread of prosocial behavior within groups through paying-it-forward,... View Details
Keywords: Prosociality; Reciprocity; Cooperation; Gratitude; Affect; Behavior
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  • 28 Jan 2014
  • First Look

First Look: January 28

capuchin monkeys (Cebus apella) and 4-year-old children pay forward positive and negative outcomes in an identical testing paradigm. These results suggest that a cognitively simple mechanism present early in phylogeny and ontogeny leads... View Details
Keywords: Sean Silverthorne