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Related Experiment Videos

The influence of testosterone on human aggression.

J Archer1

  • 1School of Psychology, Lancashire Polytechnic, Preston, UK.

British Journal of Psychology (London, England : 1953)
|February 1, 1991
PubMed
Summary

While animal studies link testosterone and aggression, human evidence is mixed. This review highlights the need for better study designs to clarify the testosterone-aggression relationship in humans.

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Area of Science:

  • Behavioral neuroscience
  • Endocrinology
  • Human aggression research

Background:

  • Animal models suggest a causal link between testosterone and aggression.
  • Human studies on androgens, primarily testosterone, and aggression present complex findings.
  • Existing research shows inconsistencies in correlating testosterone levels with aggressive behavior.

Purpose of the Study:

  • To review and assess existing human studies on the relationship between androgens, particularly testosterone, and aggression.
  • To evaluate the evidence for a causal link between testosterone and human aggression.
  • To identify methodological challenges and suggest improvements for future research.

Main Methods:

  • Systematic review of studies investigating androgens and human aggression.
  • Analysis of correlational data, including correlations with hostility inventories and peer ratings.
  • Examination of studies involving prenatal androgen exposure and pubertal development.
  • Consideration of research on the bidirectional influence of aggressive encounters on testosterone levels.

Main Results:

  • Evidence for a link between prenatal androgens and aggression in humans is inconclusive.
  • Adults in highly aggressive groups tend to have higher testosterone levels.
  • Correlations between testosterone and aggression are weak with self-reported hostility but stronger with external ratings (r = .38).
  • Studies on pubertal boys and regression analyses yielded inconclusive results.
  • The outcome of aggressive encounters can influence testosterone levels, complicating correlational findings.

Conclusions:

  • The relationship between testosterone and human aggression is not definitively established due to methodological limitations.
  • Further research with improved experimental designs, including hormone manipulation and refined outcome measures, is necessary.
  • Future studies should address confounding factors and employ robust methodologies to elucidate a potential causal link.

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