Abstract
Self-focused, analytical mental rumination constitutes a central process in depression. It has been hypothesized that such rumination depletes executive resources that are necessary for an efficient cognitive regulation of emotion and behavior. However, most of the research supporting this hypothesis is of correlational nature. The present study examined the effects of induced rumination versus distraction on executive capacities in dysphoric and nondsyphoric college students. Executive functioning was measured with the Stroop task. Results indicate that induced rumination decreases inhibition capacities in dysphoric individuals only. The flexibility facet of executive functioning was not affected by induced rumination. However, dysphoric individuals demonstrated a fundamental impairment in this latter capacity, independent of rumination induction. The implications for the facets of executive functioning affected by depression and by rumination are discussed.
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