Encyclopedia of Evolutionary Psychological Science

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

Sex Ratio and Men’s Long-Term Mating

  • Andreas Filser
  • Sebastian SchnettlerEmail author
Living reference work entry
DOI: https://doi.org/10.1007/978-3-319-16999-6_3655-1



  • Sex ratios are defined as the number of men per 100 women (in pre-defined age groups).

  • We define long-term mating as a mating strategy in which men are seeking a partner for a long-term relationship.


Human mating strategies are not fixed but constitute facultative responses to developmental, individual- and population-level, social, and ecological circumstances. As a consequence, men’s preferences for and likelihood of engagement in long-term mating have been shown to be subject to variation across contexts (Schacht and Kramer 2016; Uggla and Mace 2017) “Sex Ratio” by D. Schmitt.

A growing body of literature identifies the sex ratio as such a contextual factor for mating behavior. The sex ratio is commonly defined as the number of men per 100 women, yet operational definitions vary across the literature. Variants include the adult sex ratio (ASR) which is calculated on the basis of age...

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of Social SciencesCarl von Ossietzky University of OldenburgOldenburgGermany

Section editors and affiliations

  • Tara DeLecce
    • 1
  1. 1.Department of PsychologyOakland UniversityRochesterUSA