‘Felt Sense of Anomaly’-type transdiagnostic dissociative experiences in adolescents: endorsed phenomenology and plausible mechanisms.

ObjectiveResearch indicates higher prevalence of dissociative experiences in adolescents than in adults. However, the exact phenomenology and underlying mechanisms of dissociation in adolescence have yet to be clarified. The current study explores the presentation of, and possible psychological factors underlying, dissociation in this population.MethodTwo online self-report surveys captured data from 3076 adolescents aged 13 to 18 years. Participants completed the Černis Felt Sense of Anomaly (ČEFSA) scale of felt sense of anomaly-type dissociation, alongside measures of mechanisms implicated in a cognitive-behavioural model of dissociation in adults (cognitive appraisals, alexithymia, and affect intolerance). N=409 completed the ČEFSA scale at a second timepoint, one month later.ResultsMost (91.87%) adolescents endorsed at least one ČEFSA item. The mean number of endorsed items was 13.00 (SD = 9.67). The most endorsed factors of the ČEFSA were Altered Sense of Agency (82.96%), Anomalous experience of the Self (76.76%), and Altered Sense of Connection (73.76%).Mediation analysis indicated that emotion regulation (expressive suppression) mediated the relationship between Time One and Time Two dissociation scores: greater suppression was associated with greater dissociation one month later. No other tested variables showed statistically significant mediation.ConclusionsAdolescents are likely to experience dissociation as detachment and disconnection, particularly relating to their selfhood and external world (i.e., depersonalisation and derealisation). This study suggests that the key element of a recent cognitive-behavioural model of dissociative experiences in adults – that affect intolerance perpetuates dissociation – may also be applicable in adolescence.