Funding for this research was provided by:
National Science Foundation USA (1613393, 1540259)
National Geographic Society (9824-15)
Nacey Maggioncalda Foundation (NA)
Boston University (NA)
University of Michigan (NA)
Arizona State University (NA)
National Institute on Aging (5R01AG049395)
Article History
Received: 14 June 2019
Revised: 8 December 2019
Accepted: 13 December 2019
First Online: 23 December 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All applicable international, national, and institutional guidelines for the use of animals were followed. Noninvasive data collection from chimpanzees received a review exemption from Boston University’s Institutional Animal Care and Use Committee. Similarly, this study did not require approval from Boston University’s Institutional Review Board.
: Although this study was not considered human subjects research by Boston University’s Institutional Review Board, human participants provided written consent.