High Quality Content by WIKIPEDIA articles! A subpersonality is, in transpersonal psychology, a personality mode that kicks in (appears on a temporary basis) to allow a person to cope with certain types of psychosocial situations. Similar to a complex, the mode may include thoughts, feelings, actions, physiology, and other elements of human behavior to self-present a particular mode that works to negate particular psychosocial situations. The average person has about a dozen subpersonalities.