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

• Kristin L. Leimgruber ,

  * E-mail: Kleimgruber@gmail.com

  ¶KL and AW are joint first authors.

  Affiliation Department of Psychology, Yale University, New Haven, Connecticut, United States of America

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• Adrian F. Ward ,

  ¶KL and AW are joint first authors.

  Affiliation Department of Psychology, Harvard University, Cambridge, Massachusetts, United States of America

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• Jane Widness,

  Affiliation Department of Psychology, Yale University, New Haven, Connecticut, United States of America

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• Michael I. Norton,

  Affiliation Harvard Business School, Harvard University, Boston, Massachusetts, United States of America

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• Kristina R. Olson,

  Affiliation Department of Psychology, Yale University, New Haven, Connecticut, United States of America

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• Kurt Gray,

  Affiliation Department of Psychology, University of Maryland, College Park, Maryland, United States of America

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• Laurie R. Santos

  Affiliation Department of Psychology, Yale University, New Haven, Connecticut, United States of America

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