The relationship between testosterone and aggression: a meta-analysis |
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| Authors: | Angela S. Book Katherine B. Starzyk Vernon L. Quinsey |
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| Affiliation: | 1. Department of Psychology, University of Maryland, College Park, MD 201742, USA;2. Neuroendocrinology Unit, GIGA Neurosciences, University of Liège, 15 avenue Hippocrate (B36), 4000 Liège, Belgium;1. Department of Basic Psychological Research and Research Methods, Faculty of Psychology, University of Vienna, Liebiggasse 5, 1010 Vienna, Austria;2. Department of Psychology, Nipissing University, 100 College Drive, North Bay, Ontario P1B 8L7, Canada;1. University of Massachusetts Boston, United States;2. Nipissing University, Canada;3. Wayne State University, United States;4. University of Michigan, United States |
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| Abstract: | In non-human animals, the relationship between testosterone and aggression is well established. In humans, the relationship is more controversial. To clarify the relationship, Archer conducted three meta-analyses and found a weak, positive relationship between testosterone and aggression. Unfortunately, each of the analyses included only five to six studies. The aim of the present study was to re-examine the relationship between testosterone and aggression with a larger sample of studies. The present analyses are based on 45 independent studies (N=9760) with 54 independent effect sizes. Only studies that reported a p-value or effect size were included in the analyses and the sample may underestimate the proportion of non-significant findings in the population. Correlations ranged from −0.28 to 0.71. The mean weighted correlation (r=0.14) corroborates Archer's finding of a weak positive relationship. |
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| Keywords: | Violence Aggression Testosterone |
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