Keith Jensen

Summary

Affiliation: Max Planck Institute for Evolutionary Anthropology
Country: Germany

Publications

  1. pmc What's in it for me? Self-regard precludes altruism and spite in chimpanzees
    Keith Jensen
    The Max Planck Institute for Evolutionary Anthropology, Department of Developmental and Comparative Psychology, Deutscher Platz 6, 04103 Leipzig, Germany
    Proc Biol Sci 273:1013-21. 2006
  2. pmc Chimpanzees are vengeful but not spiteful
    Keith Jensen
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D 04103 Leipzig, Germany
    Proc Natl Acad Sci U S A 104:13046-50. 2007
  3. ncbi request reprint Chimpanzees are rational maximizers in an ultimatum game
    Keith Jensen
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D 04103, Leipzig, Germany
    Science 318:107-9. 2007
  4. pmc No third-party punishment in chimpanzees
    Katrin Riedl
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, D 04103 Leipzig, Germany
    Proc Natl Acad Sci U S A 109:14824-9. 2012
  5. pmc Chimpanzees help conspecifics obtain food and non-food items
    Alicia P Melis
    Department of Comparative and Developmental Psychology, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
    Proc Biol Sci 278:1405-13. 2011
  6. doi request reprint Five-year-olds understand fair as equal in a mini-ultimatum game
    Martina Wittig
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, D 04103 Leipzig, Germany
    J Exp Child Psychol 116:324-37. 2013
  7. ncbi request reprint Chimpanzees may recognize motives and goals, but may not reckon on them
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    Novartis Found Symp 278:56-65; discussion 65-70, 89-96, 216-21. 2007

Detail Information

Publications7

  1. pmc What's in it for me? Self-regard precludes altruism and spite in chimpanzees
    Keith Jensen
    The Max Planck Institute for Evolutionary Anthropology, Department of Developmental and Comparative Psychology, Deutscher Platz 6, 04103 Leipzig, Germany
    Proc Biol Sci 273:1013-21. 2006
    ..The main result across all studies was that chimpanzees made their choices based solely on personal gain, with no regard for the outcomes of a conspecific. These results raise questions about the origins of human cooperative behaviour...
  2. pmc Chimpanzees are vengeful but not spiteful
    Keith Jensen
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D 04103 Leipzig, Germany
    Proc Natl Acad Sci U S A 104:13046-50. 2007
    ..Like humans, chimpanzees retaliate against personally harmful actions, but unlike humans, they are indifferent to simply personally disadvantageous outcomes and are therefore not spiteful...
  3. ncbi request reprint Chimpanzees are rational maximizers in an ultimatum game
    Keith Jensen
    Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D 04103, Leipzig, Germany
    Science 318:107-9. 2007
    ..These results support the hypothesis that other-regarding preferences and aversion to inequitable outcomes, which play key roles in human social organization, distinguish us from our closest living relatives...
  4. pmc No third-party punishment in chimpanzees
    Katrin Riedl
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, D 04103 Leipzig, Germany
    Proc Natl Acad Sci U S A 109:14824-9. 2012
    ..Third-party punishment as a means of enforcing cooperation, as humans do, might therefore be a derived trait in the human lineage...
  5. pmc Chimpanzees help conspecifics obtain food and non-food items
    Alicia P Melis
    Department of Comparative and Developmental Psychology, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
    Proc Biol Sci 278:1405-13. 2011
    ..Humans, however, show prosocial motives more readily and in a wider range of contexts...
  6. doi request reprint Five-year-olds understand fair as equal in a mini-ultimatum game
    Martina Wittig
    Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, D 04103 Leipzig, Germany
    J Exp Child Psychol 116:324-37. 2013
    ..Thus, preschool children seem to understand "fair=equal" in this task, but not much more, and they are not yet skillful at anticipating what others will find fair beyond 50/50 splits. ..
  7. ncbi request reprint Chimpanzees may recognize motives and goals, but may not reckon on them
    Josep Call
    Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
    Novartis Found Symp 278:56-65; discussion 65-70, 89-96, 216-21. 2007
    ..However, based on recent studies, it is not clear whether chimpanzees have any regard for others, calling into the question the point at which fairness and other-regard were used as building blocks for full-fledged human morality...