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Related Experiment Videos

Trends in mass murder.

David Lester1

  • 1Psychology Program, The Richard Stockton College of New Jersey, Pomona 08240-0195, USA.

Psychological Reports
|August 2, 2002
PubMed
Summary
This summary is machine-generated.

Mass murder events did not increase between 1976 and 1996. These high-victim homicide incidents showed no link to social factors like birth rates or unemployment.

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Area of Science:

  • Criminology
  • Sociology
  • Public Health

Background:

  • Mass murder events, defined as incidents with five or more victims, are a significant concern.
  • Understanding trends in mass murder and their relationship to societal factors is crucial for public safety.
  • Previous research has explored various social indicators in relation to crime rates, but findings on mass murder specifically remain less clear.

Purpose of the Study:

  • To investigate the temporal trends in the proportion of mass murder incidents over a 20-year period.
  • To examine the association between mass murder incidents and selected social indicators during the study timeframe.
  • To determine if social factors correlate with the occurrence of mass murders.

Main Methods:

  • Analysis of a national dataset of murder incidents from 1976 to 1996.

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  • Statistical analysis to identify linear trends in the proportion of mass murder events.
  • Correlation analysis to assess the relationship between mass murder incidents and social indicators, including birth rate, unemployment rate, and overall homicide rate.

    • Main Results:

    • The proportion of murder incidents involving five or more victims did not exhibit a statistically significant linear trend between 1976 and 1996.
    • No significant association was found between the proportion of mass murder incidents and the selected social indicators (birth rate, unemployment rate, homicide rate).
    • The findings suggest that broad societal changes during this period did not directly influence the frequency of mass murder events.

    Conclusions:

    • The study indicates that mass murder events were not on the rise from 1976 to 1996.
    • There was no discernible link between mass murder frequency and common social and economic indicators during the study period.
    • Further research may be needed to explore other potential contributing factors to mass murder incidents.