Debriefing involves the expert psychological care of victims directly following a calamity. It includes seven items: introduction, facts, thoughts, emotions, symptoms, education, and conclusion. It was thought that early debriefing after a calamity would reduce posttraumatic stress disorder later on, but controlled trials have yielded equivocal results; in some the stress disorder was even more severe in debriefed persons. People with an adequate social network may not need debriefing.