Low autonomic arousal as a risk factor for reoffending: A population-based study

Area of Science:

• Forensic Psychology
• Cardiovascular Physiology
• Criminology

Background:

• Low resting heart rate (RHR) and low systolic blood pressure (SBP) are linked to criminal behavior.
• Limited research exists on the predictive value of RHR and SBP for reoffending.

Purpose of the Study:

• To investigate the association between RHR, SBP, and the risk of reoffending in a large population-based sample.
• To determine if RHR and SBP can serve as predictors for future criminal convictions.

Main Methods:

• A cohort study of 407,533 Swedish male conscripts born between 1958-1990.
• RHR and SBP were measured at conscription; reoffending data (any, violent, non-violent crime) were obtained from the National Crime Register.
• Survival analyses, including Cox regression, were used, adjusting for covariates like socioeconomic status and physical capacity.

Main Results:

• Lower RHR (≤60 bpm) was associated with an increased risk of reoffending (any crime HR=1.17, violent crime HR=1.23).
• Lower SBP (≤80 mmHg) was also linked to a higher risk of reoffending (any crime HR=1.19, violent crime HR=1.16).
• These associations remained significant after adjusting for multiple covariates.

Conclusions:

• Low autonomic arousal, indicated by low RHR and SBP, is associated with an elevated risk of reoffending.
• RHR and SBP show potential as predictive markers in risk assessment protocols for reoffending.
• Further investigation into RHR and SBP is warranted for their utility in predicting criminal recidivism.