Illicit drug-related psychopharmacological violence: The current understanding within a causal context

This study reviews past research on psychopharmacological violence associated with illicit drug use within the criteria for causality. There appears to be prior evidence suggesting that illicit drug use and violent offending are related in certain circumstances; and other studies conclude that illicit drug use may be correlated with violent victimization. However, those studies that also adequately assessed temporal order do not strongly support an offender-based psychopharmacological link; and those that explored violent victimization are limited and inconclusive. More importantly, there are very few criminological efforts that assess the impact of illicit drug use on violence while also controlling for alternative individual-level causal explanations such as hormonal influences, genetic factors, variations in substance metabolism rates and intoxication decay, psychological functioning, concurrent alcohol and/or other drug use, gender differences, and illicit drug dosage. We offer suggestions for improving future assessments of illicit drug-related violent offending and victimization including capturing dosage and purity data, gauging temporal proximity of offender and victim intoxication relative to violent outcomes, and separating psychopharmacological factors (e.g., offender motivation and victim vulnerability) from economic and systemic circumstances.