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Psychostimulant medication and perceived intensity in hyperactive children
Authors:Barbara Henker  Laurie Astor-Dubin  James W. Varni
Affiliation:(1) Department of Psychology, University of California, 90024 Los Angeles, California;(2) Orthopaedic Hospital and University of Southern California, USA
Abstract:Adult ratings of children's activity, based on impressionistic scales, are good indicators of psychostimulant medication effects. These ratings seldom correlate with objective indicators, however, and their behavioral referents are poorly understood. Two separate studies tested the hypothesis that intensity of child behavior, as perceived by others, would differentiate medicated and unmedicated states. College student subjects assessed randomized videotaped segments of children's behaviors. The perceived intensity of hyperactive children's responses decreased with medication, while there were no medicationrelated changes in either gross motor locomotion or off-task behaviors. In a test for observer sensitization or expectancy, the results for subjects who were looking for medication effects did not differ from those for uninformed subjects.This research was supported in part by NIMH grant 29475 and NIDA grant 01070. We thank Andy Christensen and Carol Whalen for helpful comments.
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