DEVELOPMENTAL RETARDATION By N., Sam M.S. - 5 The abnormally slow growth. In one or all areas. See dvelopmental delay- developmental immaturity. DEVELOPMENTAL RETARDATION: "Joe showed developmental retardation in his liguistic and reading areas." Related Psychology Terms READING DISABILITY (Paralexia, Dyslexia) Developing a Case Study ADOLESCENCE (Theories) FREUD, SIGMUND (1856-1939) LEARNING ADDS Hitler and Conformity DIAGNOSTIC TESTS IN EDUCATION CEREBRAL CORTEX OBSESSRVE-COMPULSIVE REACTION ANTISOCIAL REACTION Cite this page: N., Sam M.S., "DEVELOPMENTAL RETARDATION," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/developmental-retardation/ (accessed November 28, 2021).