Delusional Beliefs and Thought Insertion

Abstract

Abstract This chapter considers thought insertion (TI) in relation to other kinds of delusional beliefs often observed in schizophrenia-spectrum psychoses. TI is compared with the more common delusional beliefs, such as delusions of persecution and reference, and evaluate whether TI is better conceptualized as a delusional belief in its entirety or as a near-sensory experience of passivity and thought interference which is often accompanied by a delusional elaboration. Considering historical and contemporary literature on the nature of delusions, it is argued that TI, at least on some levels, is fundamentally different, both phenomenologically and clinically, from many of the other delusional beliefs found in schizophrenia and other psychoses. The chapter concludes with recommendations for future research and practice and emphasize that not all experiences of TI are of the same psychopathological nature or best understood as delusional beliefs.