Abstract: This study examines the impact of childhood victimization onset on the development of risk factors among individuals incarcerated for sexual crimes against adult victims in Canada. Using developmental psychopathology and victimology perspectives, a sample comprising 259 individuals was subjected to bivariate, generalized linear model, and multinomial regression analyses. Results confirmed all hypotheses revealed that childhood victimization, especially direct experiences, strongly influenced psychopathological risk factors compared to adolescent victimization or exposure. This study highlights the importance of addressing the age of onset in preventive interventions to reduce long-term psychopathological risks.