TY - GEN AU - Forehand,R AU - Baumeister,A A TI - Rate of stereotyped body rocking of severe retardates as a function of frustration of goal-directed behavior SN - 0021-843X PY - 1971///1207 KW - Adolescent KW - Adult KW - Female KW - Frustration KW - Humans KW - Intellectual Disability KW - Male KW - Motor Activity KW - Probability KW - Reinforcement, Psychology KW - Reward KW - Time Factors N1 - Publication Type: Journal Article UR - https://doi.org/10.1037/h0031496 ER -