EXAPTATION By N., Sam M.S. - 4 An evolved trait for one function is later used for another function. Also called spandrel. EXAPTATION: "Exaptation may be when feathers were used as insulating then were used for flying." Related Psychology Terms Comparison of Assessment Tools PERSONALITY TRAIT THEORY CHILD PSYCHIATRY HOMOSEXUALITY (ETIOLOGY AND THERAPY) JUNG, CARL GUSTAV (1875-1961) PREENING AER HUNGER FREUD, SIGMUND (1856-1939) CLINICAL PSYCHOLOGY HABIT Cite this page: N., Sam M.S., "EXAPTATION," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/exaptation/ (accessed June 26, 2022).