Abstract
Abstract The aim of this study is to compare working memory capacity (WMC), short-term memory (STM), and attention mechanisms of executive function (including inhibition, shifting, and updating) between people with obsessive-compulsive tendencies (OCT) and controls without OCT. For this purpose, 164 undergraduate students (90 women and 74 men) were selected using the stratified random method, and they individually responded to the Maudsley Obsessional-Compulsive Inventory to measure OCT and to executive function tests including Forward Digit Span, Backward Digit Span, Stroop, Set Shifting, and Keep Track tasks. These tasks assessed STM, WMC, and inhibition of prepotent responses, mental set shifting, and information updating and monitoring, respectively. In this study, the cutoff point of the Maudsley Obsessional-Compulsive Inventory was considered to be 11. With regard to this cutoff point, 44 people in the group had OCT and 120 did not. The obtained results from the Pearson correlation coefficient and analysis of variance showed that students with OCT had significantly limited STM and WMC compared with those in the control group. Furthermore, their executive function abilities including shifting, updating, and inhibition were significantly weaker than those in the control group.
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