Neutrophil to lymphocyte ratio in captive olive baboons (Papio anubis): The effects of age, sex, rearing, stress, and pregnancy

Authors: S. J. Neal, A. M. Achorn, S. J. Schapiro, W. D. Hopkins, J. H. Simmons

Publication/Journal: Am J Primatol

Keywords: *Papio anubis/genetics/physiology, age factors, animals, baboons, early adversity, female, lymphocytes, male, neutrophil‐lymphocyte ratio, neutrophils, physiological, pregnancy, sex factors, stress

2024

Minimizing the impact of biologging devices: Using computational fluid dynamics for optimizing tag design and positioning

Authors: William P. Kay, David S. Naumann, Hannah J. Bowen, Simon J. Withers, Benjamin J. Evans, Rory P. Wilson, Thomas B. Stringell, James C. Bull, Phil W. Hopkins, Luca Borger

Publication/Journal: Methods in Ecology and Evolution

Keywords: animal welfare, biologging, biotelemetry, computational fluid dynamics, drag, flow simulation, hydrodynamics, tag design

2019

Age-dependant behavioral strategies in a visual search task in baboons (Papio papio) and their relation to inhibitory control

Authors: Joël Fagot, Elodie Bonté, William D. Hopkins

Publication/Journal: Journal of Comparative Psychology

Keywords: baboons, behavior, behavioral strategies, development, executive control, executive function, nonhuman primate

2013

Energetic constraints and parental care: Is corticosterone indicative of energetic costs of incubation in a precocial bird?

Authors: Sarah E. DuRant, William A. Hopkins, Gary R. Hepp, L. Michael Romero

Publication/Journal: Hormones and Behavior

Keywords: brood parasitism, glucocorticoids, parental care, stress endocrinology, waterfowl

2013

Rhesus Monkeys (Macaca mulatta) Rapidly Learn To Select Dominant Individuals in Videos of Artificial Social Interactions Between Unfamiliar Conspecifics

Authors: R. Paxton, B.M. Basile, I. Adachi, W.A. Suzuki, M.E. Wilson, R.R. Hampton

Publication/Journal: Journal of Comparative Psychology

Keywords: computerized testing, hierarchy, observation, social behavior, social behaviour, social cognition

2010

Behavioral Evidence For The Cutaneous Expression Of Emotion In A Chimpanzee (Pan troglodytes)

Authors: David A. Leavens, Filippo Aureli, William D. Hopkins

Publication/Journal: Behaviour

Keywords: behavioral asymmetries, behavioural asymmetries, chimpanzees (pan troglodytes), cognitive stress, emotions, scratching, self-directed behaviors, self-directed behaviour

2004

Referential Communication by Chimpanzees (Pan troglodytes)

Authors: D.A. Leavens, W.D. Hopkins, R.K. Thomas

Publication/Journal: Journal of Comparative Psychology

Keywords: animal behavior, animal behaviour, animal communication, animals, female, gestures, male, pan troglodytes, photic stimulation, reaction time, reproducibility of results, semantics

2004

Comparative assessment of handedness for a coordinated bimanual task in chimpanzees (Pan troglodytes), gorillas (Gorilla gorilla) and orangutans (Pongo pygmaeus)

Authors: William D. Hopkins, Tara S. Stoinski, Kristen E. Lukas, Stephen R. Ross, Michael J. Wesley

Publication/Journal: Journal of Comparative Psychology

Keywords: great apes, hand preference, handedness

2003

Spatial memory for food hidden by rats (Rattus norvegicus) on the radial maze: Studies of memory for where, what, and when

Authors: L.R. Bird, W.A Roberts, B. Abroms, K.A. Kit, C. Crupi

Publication/Journal: Journal of Comparative Psychology

Keywords: discrimination learning, feeding behavior/psychology, food, long-evans, maze learning, orientation, rats, rats/psychology, retention (psychology), spatial behavior, time factors

2003

Differential Use of Vocal and Gestural Communicationby Chimpanzees (Pan troglodytes) in Response to the Attentional Status of a Human (Homo sapiens)

Authors: Hostetter, Autumn B., Cantero Monica, Hopkins William D.

Publication/Journal: Journal of Comparative Psychology

Keywords: chimpanzee, communication, gestures, vocalization

2001

Our Goals