Ilan Dar-Nimrod, Ph.D., is an Associate Professor at the School of Psychology, University of Sydney. Ilan has completed his BA with a double major at Haifa University and his M.A. and Ph.D. (social psychology) at the University of British Columbia. Ilan’s main research focus is social cognition—the manner in which our social world affects our cognition. Within this focus, he concentrates on understanding how a deeply rooted psychological mechanism—Psychological Essentialism—is involved in categorizing people into groups, leading to a host of effects on people’s beliefs, emotions, and behaviors. In addition to this main line of research, he maintains ongoing research foci on a number of topics, such as existential social and clinical psychology, sexuality, gender psychology, the psychology of religion, and, of course, coolness. His research on this topic has appeared in a myriad of prestigious journals, such as Science, Psychological Bulletin, Nature Human Behaviour, and Genetics in Medicine.