Anxiety and cognitive inhibition.

Abstract
In 3 experiments, the authors investigated whether anxiety proneness is associated with impaired inhibitory processing. Participants made speeded decisions requiring inhibition of threatening or neutral meanings of ambiguous words, which were inappropriate in their current context. In Experiment 1 there were no differences found in inhibitory processing associated with anxiety. However, in Experiment 2, when the capacity for controlled processing was reduced by imposition of a mental load, anxious individuals showed a response pattern consistent with a general impairment of inhibitory processing. In Experiment 3, a group who had experienced a traumatic event also showed evidence of impaired inhibition, despite the absence of additional load. Thus anxiety proneness is associated with a general deficit of inhibitory processing, but this may be revealed only under conditions that limit the availability of controlled processing resources.

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