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Faculty

Joseph Manson


Professor


Contact Information

Email    jmanson@anthro.ucla.edu
Office  389 Haines
Phone  310-267-4337
I am an evolutionary social scientist interested in primate behavior, human ethology and social interaction, and personality variation.

I am currently pursuing three lines of research.  First, I have examined how human personality differences (specifically, psychopathic traits) interact with social contexts to affect (1) moment-to-moment social dynamics and (2) propensities to cooperate (or not) with others.  Second, I am testing evolutionary hypotheses about individual differences, using a combination of self-report questionnaires and audio sampling of people’s daily lives. Finally, I maintain an interest in social dynamics and individual differences in nonhuman primates. 

Evolutionary accounts of psychopathy have regarded it as a strategy generally predisposed to exploit others.  My colleagues and I (Gervais et al. 2013) have found evidence that subclinical (mild) psychopathy represents a more subtle conditional strategy, one that cooperates selectively with prospective social partners as a function of their perceived future value.  

The audio sampling study uses the Electronically Activated Recorder, a technique that unobtrusively captures brief audio snippets throughout a participant’s waking hours.  Participants may erase any clips they wish before researchers listen to them. The resulting material can be coded and will be used to test evolutionary hypotheses about how various dimensions of personality and social variation cohere into overarching strategies.

Degrees

Ph.D., University of Michigan (1991)

Selected Publications

Manson, J.H., M.M. Gervais & M.A. Kline. 2013. Defectors cannot be detected during "small talk" with strangers. PLoS One doi:10.1371/journal.pone.0082531 

Manson, J.H., G.A. Bryant, M.M. Gervais & M.A. Kline. 2013. Convergence of speech rate in conversation predicts cooperation. Evolution and Human Behavior 34: 419-426. 

Manson, J.H. & S. Perry. 2013. Personality structure, sex differences,and temporal change and stability in wild white-faced capuchin monkeys, Cebus capucinus. Journal of Comparative Psychology 127: 299-311. 

Gervais, M.M., M. Kline, M. Ludmer, R. George & J.H. Manson. 2013. The strategy of psychopathy: primary psychopathic traits predict defection on low-value relationships. Proceedings of the Royal Society B: Biological Sciences 280: 20122773. 

Muniz, L., S. Perry, J.H. Manson, H. Gilkenson, J. Gros-Louis & L. Vigilant. 2010. Male dominance and reproductive success in wild white-faced capuchins (Cebus capucinus) at Lomas Barbudal, Costa Rica. American Journal of Primatology 72: 1118-1130.

Research

Primate social behavior; human ethology and evolutionary psychology; personality; psychopathy; life history

Current Courses by Term

2018 Fall Quarter

Fiat Lux Freshman Seminars

Evolution of Personality

2019 Winter Quarter

Research Group Seminars: Anthropology

Core Seminar: Biological Anthropology