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Updated: Aug 21, 2026

Modeling Verbal Behavior Deficits with the Stimulus Control Ratio Equation, SCoRE
Published on: May 14, 2019
Creating tic suppression: comparing the effects of verbal instruction to differential reinforcement
Douglas W Woods1, Michael B Himle
1Department of Psychology, University of Wisconsin-Milwaukee, WI 53201, USA. dwoods@uwm.edu
Abstract:
The purpose of this study was to compare two methods designed to produce tic reduction in 4 children with Tourette's syndrome. Specifically, a verbal instruction not to engage in tics was compared to a verbal instruction plus differential reinforcement of zero-rate behavior (DRO). Results showed that the DRO-enhanced procedure yielded greater reductions in tic frequency.
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