Abstract
The conditioned suppression paradigm has been employed to define the aversiveness of a stimulus. When timeout from positive reinforcement has been used in the conditioned suppression paradigm, both response suppression and response facilitation have been obtained in the presence of the stimulus which signals timeout. The present experiment examined the effects of timeout in the conditioned suppression paradigm with humans. Reliable response acceleration was obtained with a short CS-duration and a high baseline rate of response. The data indicate that further parametric studies are needed before the conditioned suppression paradigm can be used to define the aversiveness of timeout from positive reinforcement in humans.
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