Hardly habitual: chimpanzees and gorillas show flexibility in their motor responses when presented with a causally-clear task

by Sarah L. Jacobson, Lydia M. Hopper
Published 2019-01-01

Evaluating the Behavior and Temperament of African Penguins in a Non-Contact Animal Encounter Program

by Sana T. Saiyed, Lydia M. Hopper, Katherine A. Cronin
Published 2019-06-01

Same Space, Different Species: The Influence of Exhibit Design on the Expression of Zoo-Housed Apes’ Species-Typical Retiring Behaviors

by Samantha C. Earl, Lydia M. Hopper, Stephen R. Ross
Published 2020-05-01

Zoo-Housed Chimpanzees Can Spontaneously Use Tool Sets But Perseverate on Previously Successful Tool-Use Methods

by Laura M. Bernstein-Kurtycz, Lydia M. Hopper, Stephen R. Ross, Claudio Tennie
Published 2020-08-01

Studying primate cognition in a social setting to improve validity and welfare: a literature review highlighting successful approaches

by Katherine A. Cronin, Sarah L. Jacobson, Kristin E. Bonnie, Lydia M. Hopper
Published 2017-08-01

Captive chimpanzee foraging in a social setting: a test of problem solving, flexibility, and spatial discounting

by Lydia M. Hopper, Laura M. Kurtycz, Stephen R. Ross, Kristin E. Bonnie
Published 2015-03-01

When given the opportunity, chimpanzees maximize personal gain rather than “level the playing field”

by Lydia M. Hopper, Susan P. Lambeth, Steven J. Schapiro, Sarah F. Brosnan
Published 2013-09-01

Primates' Food Preferences Predict Their Food Choices Even Under Uncertain Conditions

by Sarah M. Huskisson, Crystal L. Egelkamp, Sarah L. Jacobson, Stephen R. Ross, Lydia M. Hopper
Published 2021-02-01

Evaluating mood changes in response to anthropogenic noise with a response-slowing task in three species of zoo-housed primates

by Katherine A. Cronin, Emily J. Bethell, Sarah L. Jacobson, Crystal Egelkamp, Lydia M. Hopper, Stephen R. Ross
Published 2018-05-01

A Comparative Perspective on Three Primate Species’ Responses to a Pictorial Emotional Stroop Task

by Lydia M. Hopper, Matthias Allritz, Crystal L. Egelkamp, Sarah M. Huskisson, Sarah L. Jacobson, Jesse G. Leinwand, Stephen R. Ross
Published 2021-02-01

Different responses to reward comparisons by three primate species.

by Hani D Freeman, Jennifer Sullivan, Lydia M Hopper, Catherine F Talbot, Andrea N Holmes, Nancy Schultz-Darken, Lawrence E Williams, Sarah F Brosnan
Published 2013-01-01

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
Published 2019-01-01