Media type: E-Article Title: Activity and task performance of hyperactive children as a function of environmental stimulation Contributor: Zentall, Sydney S.; Zentall, Thomas R. Published: American Psychological Association (APA), 1976 Published in: Journal of Consulting and Clinical Psychology, 44 (1976) 5, Seite 693-697 Language: English DOI: 10.1037//0022-006x.44.5.693 ISSN: 0022-006X Origination: Footnote: