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Related Experiment Videos

Population differences in susceptibility to AIDS: an evolutionary analysis.

J P Rushton1, A F Bogaert

  • 1Department of Psychology, University of Western Ontario, London, Canada.

Social Science & Medicine (1982)
|January 1, 1989
PubMed
Summary

Population differences in sexual restraint are linked to socioeconomic status and ancestry. Evolutionary theory suggests trade-offs between reproduction and social behaviors, impacting sexual dysfunction and disease susceptibility.

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Area of Science:

  • Evolutionary biology
  • Human genetics
  • Behavioral science

Background:

  • Previous research indicated population differences in sexual restraint correlating with socioeconomic status and perceived ancestry (Mongoloids > Caucasoids > Negroids).
  • These differences were theoretically linked to a gene-based evolutionary theory of r/K reproductive strategies, proposing a trade-off between gamete production and social behaviors like intelligence and parental care.

Purpose of the Study:

  • To explore the implications of previously reported population differences in sexual restraint for sexual dysfunction.
  • To examine the relationship between these population differences and susceptibility to sexually transmitted diseases, including Acquired Immunodeficiency Syndrome (AIDS).

Main Methods:

  • The study builds upon prior analyses of population differences in sexual restraint.

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  • It applies a gene-based evolutionary theory of r/K reproductive strategies to predict outcomes.
  • The analysis considers socioeconomic status and broad ancestral classifications (Mongoloids, Caucasoids, Negroids).

    • Main Results:

    • Populations of Asian ancestry (relative to Caucasians) show a higher frequency of inhibitory sexual disorders (e.g., low sexual excitement, premature ejaculation).
    • Populations of Asian ancestry exhibit a lower frequency of sexually transmitted diseases, including AIDS.
    • Populations of African ancestry display a higher frequency of uninhibited sexual disorders (e.g., rape, unintended pregnancy) and a greater incidence of sexually transmitted diseases, including AIDS.

    Conclusions:

    • Population variations in sexual restraint, socioeconomic status, and ancestry are associated with distinct patterns of sexual dysfunction.
    • These patterns align with evolutionary predictions regarding reproductive strategies and trade-offs between reproductive and social traits.
    • Ancestry appears to be a significant factor influencing susceptibility to specific sexual dysfunctions and sexually transmitted infections.