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Behavior Modification
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Parametric Analysis of Overcorrection Duration Effects

Is Longer Really Better Than Shorter?

Gregory A. Cole

Robert W. Montgomery

Keith M. Wilson

Michael A. Milan

Georgia State Universitymmilan{at}gsu.edu.

Positive practice overcorrection (PPOC) has long played a significant role in the behavioral treatment of serious self-stimulatory behavior. Three experiments comparing the effectiveness of 30-second, 2-minute, and 8-minute PPOC on reduction of stereotypic hand behavior of adults with severe to profound developmental disabilities were conducted to resolve inconsistencies in previously reported findings concerning the role of PPOC duration in response suppression. Experiment 1, which used an alternating treatments-multiple baseline design, suggested that the different durations were equally effective in reducing the stereotypic behaviors to near-zero levels. Experiment 2, which used a reversal design, supported the findings of Experiment 1. Experiment 3, which used a reversal design to test the shortest and longest durations, generally confirmed the results of the first two experiments. This study therefore failed to support the oft-claimed superiority of long-duration PPOC. The possible factors underlying these findings and their implications for future research and practice are discussed.

Behavior Modification, Vol. 24, No. 3, 359-378 (2000)
DOI: 10.1177/0145445500243004
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