title: THE EFFECTS OF AGE, SEX, AND SOCIOECONOMIC CLASS ON RESPONSIVENESS TO TWO CLASSES OF VERBAL REINFORCEMENT.
mesh_terms: D000375:Aging; D044383:Black People; D002648:Child; D006801:Humans; D011581:Psychological Tests; D012054:Reinforcement, Psychology; D012057:Reinforcement, Verbal; D012723:Sex; D012924:Social Conditions; D014706:Verbal Learning
keywords: AGING; CHILD; NEGROES; PSYCHOLOGICAL TESTS; REINFORCEMENT (PSYCHOLOGY); SEX; SOCIAL CONDITIONS; VERBAL LEARNING