<p>This digitised material is free to access, but contains information or visuals that may:</p><ul><li>include personal details of living individuals</li><li>be upsetting or distressing</li><li>be explicit or graphic</li><li>include objects and images of objects decontextualised in a way that is offensive to the originating culture.</li></ul>By viewing this material, we ask that you use the content lawfully, ethically and responsibly under the conditions set out in our <a href="https://wellcomecollection.cdn.prismic.io/wellcomecollection/d4817da5-c71a-4151-81c4-83e39ad4f5b3_Wellcome+Collection_Access+Policy_Aug+2020.pdf">Access Policy</a>.

You must accept the terms to view the content.

'Evolution of primates: social'

Galleries and Reading Room

Library

Shop

Café

From January 2026 Wellcome Collection will close at 18.00 on Thursdays.

We're running paid user research studies to improve Wellcome Collection online

Take part in research

Yerkes 1943; Chance & Mead 1953; Washburn & Hamburg 1965; Hamburg 1965; Wahburn & DeVore 1962; JZ Young Also includes letter from Paul Halmos, Aug 1952.

Content advisory

'Evolution of primates: social'

Licence and re-use