ALTER By Nugent, Pam M.S. - April 7, 2013 noun. 1. any number of the additional characteristics of an individual with DID (Dissociative Identity Disorder). 2. the second person in any social interplay scenario. ALTER: "The movie Cybil depicts a schizophrenic woman with several alters." Related Psychology Terms SPLIT PERSONALITY DISSOCIATIVE TRANCE DISORDER PRIMARY PERSONALITY TRANSACTIONALISM ALLPORT'S PERSONALITY TRAIT THEORY GENDER DYSPHORIA ATYPICAL DISSOCIATIVE DISORDER INTRACONSCIOUS PERSONALITY PSYCHOGENDER GANSER SYNDROME Cite this page: Nugent, Pam M.S., "ALTER," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/alter/ (accessed June 25, 2017).