PSYCHOMOTOR RETARDATION By N., Sam M.S. - 33 A general slowing of mental and physical activity including speech, thinking and movements. It is a common symptom of depression. Also referred to as hypoactivity. PSYCHOMOTOR RETARDATION: "John would just sit there on the corner of his bed for hours during a depressive event. That was indicative of psychomotor retardation." Related Psychology Terms Developing a Case Study Diagnosis and Treatment Planning Using the Hamilton Depression Rating Scale: A Case Study on Grief OBSESSRVE-COMPULSIVE REACTION FREUD, SIGMUND (1856-1939) MANIC-DEPRESSIVE REACTION (DEPRESSIVE PHASE) ENURESIS (Bed-wetting) Hitler and Conformity ADOLESCENCE (Theories) MANIC-DEPRESSIVE REACTION (CIRCULAR AND MIXED TYPES) Cite this page: N., Sam M.S., "PSYCHOMOTOR RETARDATION," in PsychologyDictionary.org, April 28, 2013, https://psychologydictionary.org/psychomotor-retardation/ (accessed August 15, 2022).