I have 25 years of experience and specialize in the field of psychology with specific knowledge in the areas of post-traumatic stress disorder (PTSD), psychosis and dissociative disorders. I have published on such topics as PTSD, dissociative disorders and anxiety. I have testified on ritual abuse, dissociative disorder and child protection. I have worked with a wide range of people and settings including adults, children and the elderly, and with disorders ranging from mood disorders to PTSD to autism, psychosis and substance abuse.