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Positive Association of Aggression with Ambient Temperature
Satbyul Estella Kim1, Yoonhee Kim2, Masahiro Hashizume2
1Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Japan.
The Yale Journal of Biology and Medicine
|July 3, 2023
Summary
Rising temperatures increase the risk of assault deaths. This study found a 1.4% higher risk per 1°C rise, with higher risks observed in males and teenagers.
Area of Science:
- Environmental Health
- Public Health
- Behavioral Science
Background:
- Limited research exists on how rising temperatures influence human behavior, particularly aggression.
- Aggression-related outcomes, such as assault deaths, may be sensitive to thermal changes.
- Understanding these links is crucial for public health initiatives in a changing climate.
Purpose of the Study:
- To investigate the association between ambient temperature and aggression.
- To analyze assault death data in Seoul, South Korea, from 1991 to 2020.
- To explore the impact of temperature on violent behavior.
Main Methods:
- A time-stratified case-crossover analysis was employed.
- Conditional logistic regression controlled for covariates.
- Stratified analyses examined seasonal and sociodemographic variations.
Main Results:
- A 1.4% increase in assault death risk was associated with each 1°C rise in ambient temperature.
- A curvilinear relationship was observed, with risk plateauing above 23.6°C in warm seasons.
- Elevated risks were noted for males, teenagers, and individuals with lower educational attainment.
Conclusions:
- Rising ambient temperatures are linked to increased aggression and assault deaths.
- Climate change poses a significant threat to public health through behavioral impacts.
- Targeted interventions may be needed for vulnerable populations during heat events.
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