%0 Journal Article %A Bullinger, Anke F. %A Melis, Alicia P. %A Tomasello, Michael %+ Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Max Planck Society Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Max Planck Society Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Max Planck Society %T Chimpanzees (Pan troglodytes) instrumentally help but do not communicate in a mutualistic cooperative task : %G eng %U https://hdl.handle.net/11858/00-001M-0000-0014-604B-C %R 10.1037/a0035645 %D 2014 %* Review method: peer-reviewed %J Journal of Comparative Psychology %V 128 %N 3 %& 251 %P 251 - 260 %I American Psychological Association %C Baltimore, Md. %@ 0735-7036