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Higher temperatures and holidays correlate with increased multi-victim shootings. This study analyzed daily shooting rates, finding predictable patterns in gun violence beyond just temperature.

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Area of Science:

  • Criminology
  • Environmental Criminology
  • Gun Violence Research

Background:

  • Previous research indicates a link between temperature and violence, but findings on homicide are inconsistent.
  • Limited research exists specifically on mass murder events.
  • Multi-victim shootings (four or more victims) offer a broader category for analysis with potentially similar predictive factors to mass murder.

Purpose of the Study:

  • To investigate the relationship between temperature anomalies and multi-victim shootings.
  • To identify other extrinsic factors influencing the daily rate of multi-victim shootings.
  • To understand temporal patterns in gun violence.

Main Methods:

  • Utilized data from the Gun Violence Archive for daily multi-victim shootings in the U.S.
  • Employed temperature anomaly (deviation from expected temperature) to mitigate seasonal confounding.
  • Applied a generalized linear model to analyze daily shooting counts.

Main Results:

  • Multi-victim shootings were found to be significantly more frequent on weekends and major holidays.
  • Higher temperatures and hotter seasons were associated with increased shooting rates.
  • Systematic variations in multi-victim shooting rates were observed, similar to other crime patterns.

Conclusions:

  • Temperature anomalies and specific temporal factors (weekends, holidays) are significant predictors of multi-victim shootings.
  • Gun violence, specifically multi-victim shootings, exhibits predictable patterns influenced by environmental and social factors.
  • Further research into extrinsic factors can enhance understanding and potentially inform prevention strategies for gun violence.