A study of psychological therapies for psychosis

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dc.contributor.advisor Hammond, Sean en
dc.contributor.advisor Quigney, Ciara en
dc.contributor.author Burke, Lucy
dc.date.accessioned 2019-10-03T11:29:33Z
dc.date.issued 2019
dc.date.submitted 2019
dc.identifier.citation Burke, L. 2019. A study of psychological therapies for psychosis. DClinPsych Thesis, University College Cork. en
dc.identifier.endpage 163 en
dc.identifier.uri http://hdl.handle.net/10468/8687
dc.description.abstract Study 1: Abstract Aim: The present article provides a meta-analysis of the effectiveness of metacognitive therapy (MCT) for psychosis. Variables such as insight and cognitive bias were also analysed. Method: A systematic search of the literature was completed using the databases: Psychology and Behavioural Sciences Collection, PsycARTICLES and PsycINFO, MEDLINE and ProQuest. The review included 19 studies published between the years 2010 – 2018. Metaanalyses were conducted on positive symptoms (352 participants), negative symptoms (160 participants), general psychopathology (313 participants), delusions (234 participants), insight (219 participants) and cognitive bias (193 participants). Results: The review demonstrates overall statistically significant results which indicate that MCT is an effective treatment for psychosis. This result is classified as having a medium effect size. The largest effect size was for severity of delusions which demonstrated a medium effect. A medium treatment effect size was also found for positive symptoms, negative symptoms, general psychopathology and self-reflection. The effect of MCT on cognitive bias indicate a positive but weak effect and was not statistically significant. Results indicated no difference between gender or age. Conclusion: MCT appears to be an effective treatment for psychosis. Further research is required to determine with more certainty what aspects of cognitive biases are addressed by MCT. en
dc.description.abstract Study 2: Abstract Background: The Schema Mode Inventory (SMI) is a self-report measure used to assess schema modes. Aims: The aim of the study was to explore the psychometric properties and factor structure of the SMI within an Irish population and determine its viability for use for psychotic disorders. Method: 834 participants were recruited online from the general population. A further 19 participants were recruited with a diagnosis of a psychotic disorder. Schema modes were measured in both groups using the SMI. The Community Assessment of Psychic Experiences was utilised to determine symptoms of psychosis. A full psychometric evaluation of the SMI was carried out. Multidimensional Scaling was used to assess the equivalence of the two samples. Results: Confirmatory factor analysis confirms the 14-factor mode model within the general population and good scale score reliabilities. The pattern of inter-scale correlations are consistent with expectations and are equivalent across samples. The multi-dimensional scaling reveals a common underlying structure of the SMI for both samples. However, the psychometric properties of some SMI scale scores are weaker in the psychosis group. Possible reasons for this are discussed. Conclusions: This study represents a preliminary step towards understanding the viability of the schema mode model within the psychosis population. The psychometric results indicated that the SMI is a valuable measure that can be used for mode assessment within Ireland and possibly for psychotic disorders. An adapted version of the SMI could increase its relevance for a psychosis population and could facilitate the development of individualised case conceptualisations. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher University College Cork en
dc.rights © 2019, Lucy Burke. en
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/ en
dc.subject Psychosis en
dc.subject Metacognitive therapy en
dc.subject Schema therapy en
dc.subject Schema mode model en
dc.subject Schizophrenia en
dc.subject Meta-analysis en
dc.subject Psychometric properties en
dc.subject Modes en
dc.title A study of psychological therapies for psychosis en
dc.title.alternative Study 1: Metacognitive training for psychosis: a meta-analysis en
dc.title.alternative Study 2: Exploring the schema mode inventory in an Irish context and its applicability for psychosis en
dc.type Doctoral thesis en
dc.type.qualificationlevel Doctoral en
dc.type.qualificationname DClinPsych - Doctor of Clinical Psychology en
dc.internal.availability Full text not available en
dc.check.info Restricted to everyone for three years en
dc.check.date 2022-10-02T11:29:33Z
dc.description.version Accepted Version
dc.description.status Not peer reviewed en
dc.internal.school Applied Psychology en
dc.check.reason This thesis is due for publication or the author is actively seeking to publish this material en
dc.check.opt-out Not applicable en
dc.thesis.opt-out false
dc.check.entireThesis Entire Thesis Restricted
dc.check.embargoformat Apply the embargo to the e-thesis on CORA (If you have submitted an e-thesis and want to embargo it on CORA) en
ucc.workflow.supervisor christopher.mccusker@ucc.ie
dc.internal.conferring Autumn 2019 en

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© 2019, Lucy Burke. Except where otherwise noted, this item's license is described as © 2019, Lucy Burke.
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