EXPLOration of Processes Involved in Dissociative Identity Disorder (DID)

This study falls within the field of dissociative disorders, and more specifically dissociative identity disorder (DID), whose clinical validity and mechanisms remain controversial, particularly due to the reported frequency of feigned symptoms. Objective The primary objective is to identify the functional determinants of episodes of personality state change, whether genuine or feigned, within the framework of cognitive-behavioral therapies (CBT). The analysis is based on the SORC functional model: * S (Stimuli): triggering situations * O (Organism): cognitions, emotions, sensations, imagery * R (Response): operant behaviors * C (Consequences): short- and long-term effects Methodology An exploratory qualitative approach will be used, aimed at generating hypotheses for subsequent quantitative research. Participants * N ≈ 60 * 30 diagnosed with TDI * 30 simulated TDI * Multicenter recruitment * Inclusion: ≥ 18 years old, currently undergoing therapy Procedure Participants will complete: * sociodemographic questionnaires * standardized scales: * dissociation (sDIS-Q) * dissociative beliefs (DSB) * knowledge about dissociation (KADS) * post-traumatic symptoms Then, a semi-structured qualitative interview will be conducted and recorded. Analysis * Thematic analysis of interviews * Data saturation approach * Cross-coding by raters Scientific objectives * Clarify the mechanisms of TDI * Identify functional patterns of dissociative episodes * Explore differences between genuine and feigned symptoms * Improve diagnostic validity and therapeutic interventions