Research@StAndrews
 
The University of St Andrews

Research@StAndrews:FullText >
Psychology & Neuroscience (School of) >
Psychology & Neuroscience >
Psychology & Neuroscience Theses >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10023/1014
This item has been viewed 16 times in the last year. View Statistics

Files in This Item:

File Description SizeFormat
The full text of this document is not available.pdf2.61 kBAdobe PDFView/Open
Title: Sexual selection and trust games
Authors: Stirrat, Michael
Supervisors: Perrett, David, 1954-
Keywords: Sexual selection
Trust game
Faces
Facial width to height ratio
Trust
Trustworthiness
Dominance
Cooperation
Mate choice
Attractiveness
Issue Date: 23-Jun-2010
Abstract: In economic games the facial attributes of counterparts bias decisions to trust and decisions to enter play. We report research supporting hypotheses that trust and reciprocation decisions in trust games are biased by mechanisms of sexual selection. Hypotheses that trust game behaviour is modulated by inter-sexual competition were supported. 1) Attractive individuals elicit more cooperation. 2) Male participants display trust and reciprocation toward attractive female counterparts in excess of perceived trustworthiness (and this display is modulated by male self-reported physical dominance). 3) Female participants appear to respond to male trust as a signal of sexual interest and are therefore more likely to exploit the trust of attractive males. 4) In explicitly dating contexts females are more likely to prefer attractive males to pay for the meal. These results indicate that participants are biased by mate choice and mating display considerations while playing economic games in the lab. Hypotheses that trust game behaviour is modulated by intra-sexual competition for resources were also somewhat supported. 1) Male participants reporting an ability to win fights with same-sex peers are more exploitative of other males. 2) Cues to current circulating testosterone level in counterpart’s faces are less trusted but elicit more reciprocation. 3) The male sexually dimorphic trait facial width-to-height ratio (a trait which is related to both aggression and dominance) is related to an increased proportion of decisions to exploit others in the trust game while also being used by others as a cue to untrustworthiness. We conclude that trusting and trustworthy behaviour in both sexes is biased by mating market considerations predicted by intra- and inter-sexual selection.
URI: http://hdl.handle.net/10023/1014
Type: Thesis
Publisher: University of St Andrews
Appears in Collections:Psychology & Neuroscience Theses



This item is protected by original copyright

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

DSpace Software Copyright © 2002-2012  Duraspace - Feedback
For help contact: Digital-Repository@st-andrews.ac.uk | Copyright for this page belongs to St Andrews University Library | Terms and Conditions (Cookies)