I have 13 years of experience and specialize in the field of clinical psychology with specific knowledge in the areas of neuropsychological assessment of posttraumatic stress disorder (PTSD) and traumatic brain injury (TBI). I have published on such topics as combat trauma, clinical neuroscience and neuro-imaging. I have testified 24 times on topics such as PTSD, TBI and cognitive function under stress. I am experienced with the military and intelligence community. My expertise focuses exclusively on PTSD, TBI, and cognitive function under stress. I have been retained on a wide variety of cases ranging from negligent homicide and death penalty sentencing mitigation, to motor-vehicle accidents and dog bites.