SIGNATURE By N., Sam M.S. - 3 something that identifies a certain criminal has been at the scene of the crime. It has no part in the criminal act but is a clue to his identity. SIGNATURE: "The criminal left his usual signature, red flower petal at the scene of the crime." Related Psychology Terms Dissociative Identity Disorder Developing a Case Study ADOLESCENCE (Theories) A Comparison of Maternal and Paternal Filicide OBSESSRVE-COMPULSIVE REACTION LEGAL PSYCHIATRY (Forensic Psychiatry) FREUD, SIGMUND (1856-1939) ANTISOCIAL REACTION Hitler and Conformity COLOR REACTIONS Cite this page: N., Sam M.S., "SIGNATURE," in PsychologyDictionary.org, April 13, 2013, https://psychologydictionary.org/signature/ (accessed January 22, 2022).