Bandura's Multidimensional Scales of Perceived Self-Effficacy (MSPSE) were administered to 3 matched groups of adolescents. The first group met diagnostic criteria for PTSD. The second had been exposed to qualitatively and quantitatively similar stressors and did not meet criteria for PTSD (traumatized PTSD negatives). The third group consisted of non-traumatized controls. Data analysis revealed that the adolescents with PTSD had appreciably lower self-efficacy ratings on 8 of the 9 subtests that comprise the MSPSE. Non-significant differences were observed when the MSPSE subtest scores of the traumatized PTSD negatives and controls were compared.