Chimpanzee intellect: personality, performance and motivation with touchscreen tasks

by Drew M. Altschul, Emma K. Wallace, Ruth Sonnweber, Masaki Tomonaga, Alexander Weiss
Published 2017-01-01

Circadian Rhythms of Urinary Cortisol Levels Vary Between Individuals in Wild Male Chimpanzees: A Reaction Norm Approach

by Ruth Sonnweber, Yimen G. Araya-Ajoy, Verena Behringer, Tobias Deschner, Patrick Tkaczynski, Pawel Fedurek, Anna Preis, Liran Samuni, Zinta Zommers, Cristina Gomes, Klaus Zuberbühler, Klaus Zuberbühler, Roman M. Wittig, Roman M. Wittig, Catherine Crockford, Catherine Crockford
Published 2018-06-01