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Lunar cycles and violent behaviour

C Owen1, C Tarantello, M Jones

  • 1University of Sydney, Department of Psychological Medicine, Manly Hospital, New South Wales, Australia.

The Australian and New Zealand Journal of Psychiatry
|August 26, 1998
PubMed
Summary
This summary is machine-generated.

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This study found no link between the full moon and increased violence or aggression in psychiatric patients. Research indicates the lunar effect on patient behavior in hospitals is not supported by evidence.

Area of Science:

  • Psychiatry
  • Behavioral Science
  • Lunar Studies

Background:

  • A common belief suggests the full moon influences violence and aggression in psychiatric settings.
  • Existing literature on the lunar effect in psychiatric environments is inconclusive.

Purpose of the Study:

  • To rigorously investigate the hypothesis that psychiatric inpatient violence and aggression increase during a full moon.
  • To provide empirical evidence regarding the purported lunar effect on patient behavior.

Main Methods:

  • Prospective data collection across five inpatient psychiatric facilities.
  • Utilized Morrison's hierarchy to quantify violence and aggression.
  • Employed Poisson regression analysis to assess lunar phase correlations, controlling for temporal variations.

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Main Results:

  • No statistically significant relationship was identified between any lunar phase and the frequency or severity of violence and aggression.
  • The study found no evidence to support the lunar effect hypothesis in psychiatric settings.

Conclusions:

  • The belief in a lunar effect on psychiatric patient behavior is not supported by this study's findings.
  • Further research should explore the impact of health workers' beliefs about the lunar effect, irrespective of empirical evidence.