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Menstrual cycle phase does not predict political conservatism.

Isabel M Scott1, Nicholas Pound1

  • 1Division of Psychology, Department of Life Sciences, Brunel University London, Uxbridge UB8 3PH, United Kingdom.

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Summary

This study found no link between a woman's menstrual cycle phase and her political conservatism. These findings suggest that reproductive cycle changes may not reliably influence moral, social, or political values.

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Area of Science:

  • Psychology
  • Evolutionary Psychology
  • Political Science

Background:

  • Previous research suggested a link between women's fertility status and conservatism.
  • This connection was hypothesized to be related to menstrual cycle phase.

Purpose of the Study:

  • To investigate the relationship between menstrual cycle day and political conservatism.
  • To examine potential interactions between relationship status and fertility in influencing political attitudes.

Main Methods:

  • A survey of 2213 women with regular cycles assessed political views and cycle date.
  • Fertility was estimated based on cycle day; conservatism was measured via self-report and the Moral Foundations questionnaire.
  • Data were analyzed considering relationship status and excluding hormonal disruptors.

Main Results:

  • No evidence was found for a relationship between estimated cyclical fertility and conservatism.
  • No evidence supported an interaction between relationship status and cyclical fertility in determining political attitudes.
  • Findings remained robust across various inclusion/exclusion criteria and measurement methods.

Conclusions:

  • The previously suggested relationship between menstrual cycle phase and conservatism may be weaker than believed.
  • Reproductive cycle changes do not appear to be a reliable predictor of political conservatism in women.