How internalised stigma reduces self-esteem in schizophrenia: the crucial role of off-line metacognition.

Stigma is widely recognised as a major barrier to recovery. In schizophrenia, internalised stigma (IS) strongly impacts self-esteem, but the mechanisms underlying this phenomenon remain poorly understood. In this study, we suggest that IS alters self-esteem by leading people to perceive their cognitive functioning as inefficient. We investigated whether off-line metacognitive complaints mediate the effect of IS on self-esteem in schizophrenia. We included 78 participants diagnosed with schizophrenia or schizoaffective disorder. IS was measured with the Internalised Stigma of Mental Illness scale, self-esteem by the Rosenberg Self-Esteem scale, and off-line metacognitive complaints with the Subjective Scale to Investigate Cognition in Schizophrenia. Mediation analysis revealed that the effect of IS on self-esteem was mediated by off-line metacognitive complaints. Results suggest that IS reduces self-esteem by negatively impacting metacognition, such as perception of cognitive difficulties. We suggest that taking metacognition into account in the form of metacognitive complaints may be relevant in interventions aiming at reducing IS in psychosis.