Amanda Rotella completed her Master’s degree with Pat Barclay at the University of Guelph and is now doing a SSHRC-funded PhD here. Her Master’s research uses costly signalling theory to understand when people trust, or are skeptical of, displays of generosity, and her PhD research is on individual differences in trust, trustworthiness, and social perceptions. Other research interests include individual differences in cooperative decision making, invalid cues of observation, moral licensing, and cooperative and romantic partner choice.


Laura Frielingsdorf finished her Bachelor of Science in Psychology at the Erasmus University Rotterdam in the Netherlands, and is currently doing her Master’s degree in Applied Social Psychology with Pat Barclay at the University of Guelph. Her research focuses on how cooperation relates to environmentalism. She researches how environmentalism is perceived by different groups of individuals in order to gain a better understanding of why certain groups engage in more environmentalism, while others engage in less.


Sandeep Mishra

Sandeep Mishra did two years of postdoctoral work with Pat Barclay in 2011-2012 before starting a faculty position. He is currently the Viterra Faculty Fellow at the University of Regina in the Faculty of Business Administration and Department of Psychology. He studies judgement and decision-making, especially risk-taking, personality and individual differences, health and well-being, and evolutionary theory. He is also a drumming ninja.

DannyKrupp_0Daniel Krupp joined the Barclay lab in January 2018 to work on kinship, morality, and political polarization, and is now an Assistant Professor of Interdisciplinary Studies at Lakehead University Orillia. He completed his PhD in 2007 in Psychology, Neuroscience, & Behaviour at McMaster University with Drs. Martin Daly and Margo Wilson. He won the New Investigator Award from the Human Behavior & Evolution Society in 2005, and held postdoctoral fellowships in psychology and mathematics before leading the Program in Evolution of Governance at One Earth Future, a non-governmental organization whose mission is to catalyze systems to eliminate root causes of war. Dr. Krupp does research on the evolution of cooperation and conflict, especially kinship, inequality and the structure of competition, social exchange, violence, and reproductive decision-making.

JillAug2013Jillian O’Connor finished her PhD at McMaster University in 2013 with David Feinberg, and was a SSHRC-funded postdoctoral researcher in the Barclay lab from 2015-2017. She is now doing a 3-year position as Assistant Professor in Psychology at Concordia University. She is interested in how voices and faces influence our social world, particularly in the realm of mating. Her three main research areas are (1) the influence of vocal and facial traits on social perceptions and behaviour, (2) individual differences in the resolution of mate choice trade-offs, and (3) the integration of multiple cues to mate quality. Currently, her research focus is on the relationship between voice and trustworthiness across social contexts. For more information, visit

adam_circumzenithalarc_halloween2012Adam Sparks finished his PhD with Pat Barclay in May 2015. His dissertation on reputation and cooperation won the 2016 John Vanderkamp Doctoral Graduate Medal for the top graduate PhD student in the College of Social and Applied Human Science. Adam did four months of postdoctoral work here, and is currently doing a 5-year postdoc with Daniel Fessler in the Department of Anthropology at UCLA.. He studies the functions, mechanisms, and development of human cooperation. Specific topics of interest include “the watching eyes effect,” moral condemnation, social status, and risk taking. His 2013 paper on the watching eyes effect (from his PhD thesis) received a certificate of high citation for being one of the most cited articles in Evolution & Human Behavior from 2011-2016.

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Sara Kafashan finished her PhD with Pat Barclay in January 2017, and yes she really does look like that. Her PhD dissertation applied biological markets theory to human friendships. She conducted research on differential treatment friends versus kin and strangers, and how friendships are affected by the ease of trading to new partners. After completing her PhD, she worked at the Centre for Community-Based Research in Kitchener, Ontario, and is now conducting research for Student Wellness at the University of Guelph.

Kirsten Davidson lab photoKirsten Davidson completed her Bachelor of Arts in Psychology with a minor in Family and Child Studies at the University of Guelph in 2019. During the final year of her Undergraduate Degree, she completed an Honours Thesis Project with Pat Barclay. Her research focused on the effects of observation and competition on moral condemnation. She is currently working as an Instructor Therapist at IBI Behavioural Services, and plans to begin a Master Degree in Clinical Psychology in the Fall of 2020. Following her Master’s Degree, she plans to complete a PhD in Clinical Psychology to pursue her goal of becoming a Clinical Psychologist.

Amanda Sarcevich

Amanda Sarcevich finished her BSc with a major in Psychology: Brain and Cognition at the University of Guelph. She volunteered in the Barclay Lab and then worked as a Research Assistant, with an interest in social exchange, emotion/relationships, anxiety, and depression from an evolutionary standpoint and how this knowledge can be used to offer insight into why we think and behave the way we do. After graduation she worked as an intake counsellour at Homewood Health Centre, and is currently completing a Masters of Social Work.