In this study, we examined the effects of gender roles on responses to trauma in laboratory settings to explain sex-differences in the prevalence rates and symptoms of Post-traumatic Stress Disorder (PTSD). Two studies were conducted and compared to determine the effective experimental stimulus for Korean students and to investigate the association between gender roles and externalizing and internalizing responses to trauma. A total of 101 undergraduate students participated in the study. Traumatic experience was experimentally-induced by using videos that contained materials such as violent crime and terror attack. Individuals' depression, anxiety, aggression and anger were assessed before and after watching the traumatic video. Results from hierarchical regression models revealed that, controlling for biological sex of the participant, gender roles influenced individuals' responses to trauma including both externalizing and internalizing symptoms. Theoretical and clinical implications of this study are discussed.
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