Schizotypy and substance use

Emma Barkus*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


Psychological models view delusions as, on a continuum with normal beliefs, multidimensional, attempts to make sense of anomalous experiences, mediated by maladaptive appraisals, involving reasoning and cognitive biases and influenced by emotional processes. Psychological approaches to delusions have typically adopted a 'continuum' model, which denies categorical distinctions between delusional and everyday beliefs, and, in doing so, challenges the traditional notion that having a diagnosed psychotic condition is qualitatively different from normal human experience. This chapter outlines the dimensions of delusions that are most commonly acknowledged in the literature. For each belief dimension, the individual variability among clinical populations will be explored, as well as its continuum with normal ideation. The chapter explores the implications of dimensional approaches to delusions in terms of psychological formulation and interventions. The role of emotions in delusion formation is gathering increasing attention in the psychological literature, with empirical evidence that negative emotions drive paranoid appraisals, rather than the other way round.
Original languageEnglish
Title of host publicationSchizotypy
Subtitle of host publicationNew dimensions
EditorsOliver J. Mason, Gordon Claridge
Place of PublicationLondon
PublisherTaylor & Francis
Number of pages15
ISBN (Electronic)9781317937098
ISBN (Print)9780415722032
Publication statusPublished - 5 Jun 2015
Externally publishedYes


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