Louise Barrett is Professor of Psychology and Canada Research Chair in Cognition, Evolution, and Behavior at the University of Lethbridge. Her books include Beyond the Brain: How Body and Environment Shape Animal and Human Minds as well as textbooks on evolutionary psychology. Her diverse work reflects that she is an ecologist, anthropologist and a psychologist.
Sarah Brosnan is a Distinguished University Professor in the departments of psychology and philosophy and the Neuroscience Institute at Georgia State University - among many other things. She is interested in humans and in non-human primates, and in the evolution of fairness, morality, reciprocity, and cooperation.