The current study explored vicarious trauma among therapist trainees in relation to history of trauma, experience level, trauma-specific training, and defense style. Students in graduate clinical and counseling psychology training programs (N ϭ 129) completed the Trauma Symptom Inventory, Defense Style Questionnaire, and an experience questionnaire. Results indicated trauma symptoms were significantly associated with defense style, which appeared to moderate personal trauma history and experience level. Trauma-specific training was also independently related to trauma symptoms. Notably, over half the sample reported a self-sacrificing defense style, which was a risk factor for vicarious trauma. Training implications of the findings are discussed.