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The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress
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Melatonin increases reactive aggression in humans.

Jinting Liu1,2,3, Ru Zhong3, Wei Xiong3

  • 1Shenzhen Key Laboratory of Affective and Social Cognitive Science, Shenzhen University, Shenzhen, 518060, China.

Psychopharmacology
|July 23, 2017
PubMed
Summary
This summary is machine-generated.

Melatonin supplementation increased reactive aggression in men, as evidenced by their selection of higher punishments in a laboratory setting. This finding highlights melatonin

Keywords:
Antisocial behaviorCircadian rhythmMelatoninReactive aggressionTaylor aggression paradigm

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Area of Science:

  • Neuroendocrinology
  • Social Psychology
  • Behavioral Science

Background:

  • Melatonin, a pineal gland hormone, regulates circadian rhythms and aging.
  • Animal studies suggest melatonin influences aggression.

Purpose of the Study:

  • To investigate the effect of melatonin on human aggression.
  • To determine if melatonin administration impacts social behavior.

Main Methods:

  • A double-blind, randomized, placebo-controlled study.
  • 63 healthy males received oral melatonin or placebo.
  • Participants completed the Taylor Aggression Paradigm (TAP).

Main Results:

  • Melatonin group administered higher punishments more frequently than placebo.
  • Increased reactive aggression persisted after controlling for confounding factors.
  • Factors controlled included inhibitory ability, trait aggression, impulsiveness, and sleepiness.

Conclusions:

  • Melatonin directly influences human reactive aggression.
  • Provides evidence for melatonin's role in human social processes.