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Chimpanzees are indifferent to the welfare of unrelated group members
Experimental tests of the existence of other-regarding preferences in non-human primates are presented and it is shown that chimpanzees (Pan troglodytes) do not take advantage of opportunities to deliver benefits to familiar individuals at no material cost to themselves, suggesting that chimpanzee behaviour is not motivated by other- Regarding preferences.
Hand preferences for coordinated bimanual actions in 777 great apes: implications for the evolution of handedness in hominins.
Mechanisms underlying responses to inequitable outcomes in chimpanzees, Pan troglodytes
Prolonged myelination in human neocortical evolution
- Daniel J. Miller, T. Duka, C. Sherwood
- Biology, PsychologyProceedings of the National Academy of Sciences
- 24 September 2012
Comparisons between chimpanzees and humans suggest that the human-specific shift in the timing of cortical maturation during adolescence may have implications for vulnerability to certain psychiatric disorders.
The Distribution and Development of Handedness for Manual Gestures in Captive Chimpanzees (Pan troglodytes)
- W. Hopkins, J. Russell, H. Freeman, Nicole Buehler, Elizabeth A M Reynolds, S. Schapiro
- Psychology, BiologyPsychological science
- 1 June 2005
The collective results suggest that left-hemisphere specialization for language may have evolved initially from asymmetries in manual gestures in the common ancestor of chimpanzees and humans, rather than from hand use associated with other, noncommunicative motor actions, including tool use and coordinated bimanual actions, as has been previously suggested in the literature.
Chimpanzees do not take advantage of very low cost opportunities to deliver food to unrelated group members
Developing a comprehensive and comparative questionnaire for measuring personality in chimpanzees using a simultaneous top‐down/bottom‐up design
- H. Freeman, S. Brosnan, Lydia M. Hopper, S. Lambeth, S. Schapiro, S. Gosling
- Psychology, BiologyAmerican journal of primatology
- 1 October 2013
The combined top‐down/bottom‐up approach provides the most extensive data to date to support the universal existence of these five personality factors in chimpanzees and validated the factors against behavioral data collected independently on the chimpanzees.
Measuring personality in nonhuman animals.
Transmission of Multiple Traditions within and between Chimpanzee Groups
Use of primates in research: A global overview
- H. Carlsson, S. Schapiro, I. Farah, J. Hau
- Biology, PsychologyAmerican journal of primatology
- 1 August 2004
This analysis has identified that editors rarely require authors to provide comprehensive information concerning the subjects, treatment conditions, and experimental procedures utilized in the studies they publish, including the effects of a shortage of suitable nonhuman primate subjects in many research areas.