Correspondence: Chimpanzee helping is real, not a byproduct by Alicia P. Melis, Jan M. Engelmann, Felix Warneken

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How chimpanzees (Pan troglodytes) share the spoils with collaborators and bystanders. by Maria John, Shona Duguid, Michael Tomasello, Alicia P Melis

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Dogs (Canis familiaris) evaluate humans on the basis of direct experiences only. by Marie Nitzschner, Alicia P Melis, Juliane Kaminski, Michael Tomasello

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Spontaneous altruism by chimpanzees and young children. by Felix Warneken, Brian Hare, Alicia P Melis, Daniel Hanus, Michael Tomasello

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Establishing an infrastructure for collaboration in primate cognition research. by Many Primates, Drew M Altschul, Michael J Beran, Manuel Bohn, Josep Call, Sarah DeTroy, Shona J Duguid, Crystal L Egelkamp, Claudia Fichtel, Julia Fischer, Molly Flessert, Daniel Hanus, Daniel B M Haun, Lou M Haux, R Adriana Hernandez-Aguilar, Esther Herrmann, Lydia M Hopper, Marine Joly, Fumihiro Kano, Stefanie Keupp, Alicia P Melis, Alba Motes Rodrigo, Stephen R Ross, Alejandro Sánchez-Amaro, Yutaro Sato, Vanessa Schmitt, Manon K Schweinfurth, Amanda M Seed, Derry Taylor, Christoph J Völter, Elizabeth Warren, Julia Watzek

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