This study examined the psychometric properties of the White Bear Suppression Inventory (WBSI) in a sample of 273 Turkish undergraduate students. The WBSI assesses people’s tendency toward thought suppression. The reliability and validity analyses of the Turkish version of the scale indicated that the WBSI had adequate psychometric properties in a Turkish sample. Internal consistency, and split-half and test-retest reliability coefficients were satisfactory. Consistent with the original WBSI, factor analysis of the scale identified a single component that accounted for 43.3% of the total variance. Concurrent validity of the Turkish version indicated that the scale exhibited significantly positive correlations with obsessive-compulsive, depression, and trait anxiety symptoms, as well as with responsibility attitudes, and thought-action fusion biases. All these findings supported the cross-cultural validity of WBSI.

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Contemporary cognitive theories of obsessive-compulsive disorder (OCD) propose that certain types of dysfunctional beliefs and assumptions play a salient role in the genesis and persistence of OCD (e.g., Clark, 2004; Rachman, 1993, 1997; Salkovskis, 1985). The present study aimed to examine whether the three proposed dysfunctional beliefs — inflated sense of responsibility, thought suppression, and thought-action fusion — play a significant role particularly on the persistence of obsessive–compulsive (OC) symptoms, as compared to other emotional disorders, such as symptoms of depression. The participants of the present study were 109 undergraduate university students, who completed a set of questionnaires, including The Responsibility Attitude Scale (RAS), The Thought Action Fusion Scale (TAF), The White Bear Suppression Inventory (WBSI), The Maudsley Obsessive–Compulsive Inventory (MOCI), and The Beck Depression Inventory (BDI). After a 4-week interval, participants were again asked to complete the MOCI and BDI. Two separate hierarchical regression equations were formulated to examine the factors significantly accounting for the residual changes from Time 1 to Time 2 assessments of OC and depressive symptomatologies. Results of these analyses indicated that while thought suppression (WBSI scores) played a significant role on the persistence of both OC and depressive symptoms across time, the role of inflated sense of responsibility (RAS scores) was specific to the persistence of OC symptoms.