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RESEARCH PRODUCT

Induced not just right and incompleteness experiences in OCD patients and non-clinical individuals: An in vivo study

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Abstract Background and objectives Research on incompleteness and not-just right experiences, (INC/NJREs) indicate that some OCD symptom dimensions are motivated by these experiences rather than by anxiety. Most published data are correlational, using non-clinical individuals. This study sought to examine INC/NJREs in vivo in non-clinical and OCD individuals. Methods Study 1: Ninety-three undergraduates were randomly assigned to a INC/NJREs induction (n=44) or non-induction task (n=47). Scores on self-reports assessing INC, NJREs, OCD, Anxiety, and Depression were also recorded. Study 2: Twenty adults with OCD performed the induction task and completed the same questionnaire-packet as the non-clinical participants. Results Study 1: The induction-group scored higher on several DVs of the experimental task, as INC/NJREs and uncomfortable physical sensations predicted impulses/urges to do something. All the DVs correlated with INC, NJREs, and OCD symptoms. Anxiety was only related to suppressing difficulties of the most intense sensation. Study 2: Results were comparable to those found in non-clinical people. Induced INC/NJREs correlated with compulsions severity and were associated with ordering, washing, and hoarding symptoms. OCDs did not differ from non-clinical subjects in the number of induced INC/NJREs, but they were more disturbing, difficult to suppress, and instigated more urges to do in OCDs. Limitations The small group of OCDs and the lack of a non-OCD clinical group kept us from drawing conclusions about the specificity of INC/NJREs to some OCD symptoms. Conclusions Findings support the role of INC/NJREs as stimuli triggering urges and/impulses to do and their impact on OCD severity.