Disassortative Mate Preferences on Sexual Dimorphism

Baker, Ernest (2013). Disassortative Mate Preferences on Sexual Dimorphism Honours Thesis, School of Psychology, The University of Queensland.

       
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Author Baker, Ernest
Thesis Title Disassortative Mate Preferences on Sexual Dimorphism
School, Centre or Institute School of Psychology
Institution The University of Queensland
Publication date 2013-10-09
Thesis type Honours Thesis
Supervisor Brendan Zietsch
Total pages 56
Language eng
Subjects 1701 Psychology
Abstract/Summary Much attention has been paid to the morphological and behavioural differences between males and females. What has been largely neglected, however, is the substantial within-sex variation in sexually dimorphic traits, mate preferences and mate strategies. This is important as differences in mate preferences may have driven the evolution of physical and behavioural traits through the process of mate choice and sexual selection. The present research examined the associations between these factors, using a sample of 836 identical and non-identical twins. The key findings are as follows: first, it was found that males masculinity was positively associated with an orienting towards short-term relationships (i.e., unrestricted orientation). Two competing hypothesis were formulated, finding support for the second prediction that: unrestricted females preferred more masculine men than more restricted females. Third, unrestricted males preferred more feminine females than more restricted males. Lastly, genetic factors were hypothesised to underlying each of the phenotypes and phenotypic correlations. Significant familial effects were found to influence trait masculinity, masculine facial preference and sociosexuality; and sociosexuality in males. In sum, evidence of considerable within-sex variation in mate preferences were found; specifically, that certain sexually dimorphic traits are attractive to certain individuals, which are predicted by evolutionary theory.

 
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Created: Wed, 07 May 2014, 11:11:15 EST by Danico Jones on behalf of School of Psychology