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date: 18 January 2021

Abstract and Keywords

This chapter offers an overview of the self-disorder or ipseity-disturbance model of schizophrenia, focusing on recent developments. According to this model, the foundational disorder in schizophrenia is a disturbance of minimal self or ipseity (derived from ipse, Latin for “self” or “itself”) that has three interrelated aspects: 1) hyperreflexivity and 2) diminished self-presence—together with a correlated 3) disturbance of “grip” or “hold” on the cognitive/perceptual world. The chapter focuses on recent theoretical work, together with some quasi-empirical and empirical research, that attempts to investigate the underlying nature of “self-disorder” in more depth through 1) offering theoretical clarification by considering self-disorder’s different, interlocking aspects as well its distinctive pathogenetic forms or stages (primary versus secondary); 2) investigating self-disorder in a comparative context (e.g. compared with mania and severe depression, as well as with conditions involving prominent dissociative symptoms); and 3) discussing possible correlates on the neurobiological or neurocognitive plane.

Keywords: self-disorder, ipseity-disturbance, hyperreflexivity, diminished self-presence, primary versus secondary features of schizophrenia, depersonalization and derealization, neurobiological correlates of self-disorder

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