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Brief isolation from a group situation was found to suppress persistent, high-rate misbehavior in two extremely withdrawn children, even though no positive reinforcement for other behaviors was systematically administered. Changes in a variety of behaviors, including looking, touching, speaking, responding, and other non-punished misbehaviors, were observed when isolation timeout was administered contingent on only one misbehavior of each child.
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Virginia E. Pendergrass (1972) studied this question.
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