Further Development and Validation of the Multidimensional Version of the Fear of Self Questionnaire in a Clinical OCD Sample

This study aims to further develop and validate the Fear of Self Questionnaire – Multidimensional Version (FSQ-MV; Aardema et al., 2021) in a clinical sample of adults diagnosed with Obsessive-Compulsive Disorder (OCD). The FSQ-MV measures three dimensions of the feared self: corrupted (FSQ-COR), culpable (FSQ-CUL), and malformed (FSQ-MAL). Although prior validation studies have demonstrated strong psychometric properties in non-clinical samples, the scale has not yet been validated in a clinical OCD population. Using pre-treatment data from 171 OCD participants drawn from the TICTACTOC clinical database, this study will (1) test the three-factor structure of the FSQ-MV via confirmatory factor analysis, (2) examine convergent and divergent validity through correlations with OCD symptoms (VOCI), obsessive beliefs (OBQ-20), depression (BDI-II), and anxiety (BAI), and (3) determine whether the FSQ-MV predicts OCD symptoms beyond the influence of depression and anxiety via hierarchical regression analyses.