Collaborating Graduate Students

Daniel Redhead received his B.A. in Archaeology and Anthropology from Durham University and MRes. in Evolutionary and Sociocultural Anthropology from Durham University before joining the Psychology Department at the University of Essex in 2015 as a Ph.D. student. He is interested in the relationship between prestige, dominance, and leadership in human groups. His work with Rick O’Gorman focuses on the effects of prestige and dominance within social networks and further explores the contexts in which dominance is accepted in human leadership contests. His collaborations with Joey Cheng examine how prestige and dominance affect an individual's position within, and the structure of, their social network.


Research Assistants





Eric Helm is currently pursuing his B.Sc. in Psychology and B.A. in Communication at the University of Illinois at Urbana-Champaign. He is interested in ways to improve follower well-being, and how it in turns affects work performance. Eric has previously worked as a research assistant for Seonghee Cho, where he examined patterns of stressful situations in work environments, as well as factor-analyzed various empathy measurements. He is currently working with Joey on projects exploring the relationships between gender, competitiveness, and overconfidence.


Callie Hennessy is pursuing her B.Sc. in Psychology and Minor in Leadership Studies at the University of Illinois at Urbana-Champaign. She is interested in the social interactions among individuals in team environments, and how these interactions can influence motivation and team satisfaction. Her work with Joey focuses on the dynamic interplay between voice pitch and status.



Clara Law graduated from the University of California, Irvine with a B.A. in Psychology & Social Behavior. Her research interests focus on the interplay between social and clinical psychology. Her prior work with Joey and Elizabeth Martin examined gender differences in the emotional correlates of cooperation, competitiveness, and sociality. She is currently working with Joey on a project that aims to examine the dynamics of vocal pitch in negotiation contexts.