Copying results and copying actions in the process of social learning: chimpanzees (Pan troglodytes) and human children (Homo sapiens)
Animal Cognition (2005) - Comment
pubmed: 15490290  doi: 10.1007/s10071-004-0237-8  issn: 1435-9448  issn: 1435-9456 

Josep Call, Malinda Carpenter, Michael Tomasello