project director and principle trainer, samhsa national center for trauma-informed care, rockville, md; tonier cain, team leader and director of peer/consumer involvement, samhsa promoting alternatives to seclusion and restraint through trauma-informed practice, rockville, md; dr. h. westley clark, director, center for substance abuse treatment, substance abuse and mental health services administration, u.s. department of health and human serviceses, rockville, m; dr. maxine harris, ceo and co-founder, community connections, washington, dc. dr. clark, what is trauma and how do we define trauma? the definition of trauma is a little ambiguous, but it's tied to specific adverse events that a person may experience or a community may experience, including disasters, physical or sexual abuse, or witnessing the above-mentioned. it's of that nature, it could be psychological as well as physical, and there are a wide range of issues associated with the definition. very good, and what are the various sources of trauma? well, the sources are similar to the precipitant. it could be from a relative or a pa