title: Testosterone responses to competition predict decreased trust ratings of emotionally neutral faces.
abstract: A wealth of evidence has linked individual differences in testosterone (T) to social, cognitive, and behavioral processes related to human dominance. Moreover, recent evidence indicates that a single administration of T reduces interpersonal trust in healthy young women. Here, in a sample of men and women (n=96), we investigated the extent to which endogenous fluctuations in T during a competitive interaction would predict subsequent ratings of trust from emotionally neutral faces. Results indicated that a rise in T predicted a decrease in trust ratings in men, but not women. These findings provide further support for the idea that competition-induced fluctuations in T may serve to modulate ongoing and/or future social behavior.
authors: Department of Psychology, Nipissing University, North Bay, ON, Canada. Electronic address: justinca@nipissingu.ca.
authors: Justin M
authors: JM
authors: Carré
authors: Department of Psychology, Nipissing University, North Bay, ON, Canada.
authors: Colton D
authors: CD
authors: Baird-Rowe
authors: Department of Psychology and Neuroscience, Duke University, Durham, NC, United States.
authors: Ahmad R
authors: AR
authors: Hariri
mesh_terms: D000374:Aggression / Q000502:physiology; D003163:Competitive Behavior / Q000502:physiology*; D005149:Facial Expression; D005260:Female; D006801:Humans; D008297:Male; D010775:Photic Stimulation; D012463:Saliva / Q000378:metabolism; D012727:Sex Characteristics; D013739:Testosterone / Q000378:metabolism*; D035502:Trust / Q000523:psychology*; D055815:Young Adult
chemical_list: D013739:Testosterone
keywords: Dominance; Sex difference; Social neuroendocrinology; Testosterone; Trust