Forehand, R <br/><br/>
Rate of stereotyped body rocking of severe retardates as a function of frustration of goal-directed behavior.  [electronic resource] 

 -  Journal of abnormal psychology  Aug 1971 
 - 35-42 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0021-843X 
<br/><br/><label>Standard No.: </label>10.1037/h0031496  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adolescent<br/>Adult<br/>Female<br/>Frustration<br/>Humans<br/>Intellectual Disability<br/>Male<br/>Motor Activity<br/>Probability<br/>Reinforcement, Psychology<br/>Reward<br/>Time Factors