Encyclopedia of Evolutionary Psychological Science

Living Edition
| Editors: Todd K. Shackelford, Viviana A. Weekes-Shackelford

Relationship Choices and Sexuality

Living reference work entry
DOI: https://doi.org/10.1007/978-3-319-16999-6_3623-1



Sociosexuality was originally designed to capture individual differences in people’s willingness to engage in sexual behavior outside a formally/informally committed relationship. Work on the construct has moved from simple one-dimensional models, to models that incorporate the behavioral, attitudinal, and behavioral intention aspects of motivations to engage in casual sex, to, finally, encompassing an expansive model that describes a two-dimensional coordinate system composed of short-term mating interest and long-term mating interest. This model is especially useful in examining the emergent nature of the variety of apparent relationships that characterize the sexual landscape today.


Since Kinsey (circa 1953), it has been clear that there is a wide variety of sexual behaviors men and women engage in. Despite this, there is a pervasive myth of heterosexual monogamy in...


Romantic Relationship Behavioral Intention Mating Strategy Parental Investment Theory Sexual Strategy Theory 
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Authors and Affiliations

  1. 1.School of Social Sciences and PsychologyWestern Sydney UniversityMilperraAustralia