DAT 1 By N., Sam M.S. - 0 1. abbreviated form of the Alzheimer's form of dementia. 2. abbreviated form of Differential Aptitude Tests. DAT 1: "Dave was saddened to hear of his mother's diagnosis with DAT." Related Psychology Terms APRAXIA (literally, “inability to act or do”) Developing a Case Study ACHIEVEMENT TESTS CLINICAL PSYCHOLOGY Diagnosis and Treatment Planning OEDIPUS COMPLEX (Oedipus Situation) READING DISABILITY (Paralexia, Dyslexia) SCHOLASTIC APTITUDE TESTS ENURESIS (Bed-wetting) FREUD, SIGMUND (1856-1939) Cite this page: N., Sam M.S., "DAT 1," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/dat-1/ (accessed December 2, 2021).