Comprehensively examining the effects of psychological trauma on the brain, this volume integrates neurobiological, clinical, and cognitive aspects of PTSD. Presented is groundbreaking research on the emergence of neuropsychological dysfunctions in specific trauma populations: children, adults, older adults, and victims of closed head injury. Coverage encompasses a range of chronic problems with memory, attention, and information processing that are related to trauma exposure. Linking neuropsychological findings to the realities of clinical practice, the concluding section addresses key implications for PTSD assessment and for pharmacological and psychological treatment.