title: Assessing fidelity to integrated motivational interviewing and CBT therapy for psychosis and substance use: the MI-CBT fidelity scale (MI-CTS).
abstract: BACKGROUND
  Guidelines for the psychological treatment of psychosis and substance use suggest integrated treatments to address both problems are necessary. One such treatment combines cognitive-behaviour therapy (CBT) and motivational interviewing (MI). While there are a number of scales to assess treatment fidelity to CBT and MI separately, none, to date, assess fidelity to integrated MI and CBT (MI-CBT) for psychosis and substance use.
  
  
  OBJECTIVE
  This study aimed to develop a reliable and valid scale to assess fidelity to MI-CBT for people with psychosis and problematic substance use.
  
  
  METHODS
  Items for a new scale (the MI-CTS fidelity scale) were selected from multiple relevant sources. Inter-rater reliability and validity (against the CTS-Psy and Motivational Interviewing Treatment Integrity (MITI)) scales were investigated.
  
  
  RESULTS
  The scale had good inter-rater reliability when used to rate adherence versus non-adherence. In relation to validity, the scale related well to CBT and MI scales (the CTS-Psy and MITI).
  
  
  CONCLUSIONS
  The MI-CTS is useful for assessing adherence to integrated MI-CBT for psychosis and substance misuse and could aid training and implementation of the approach.
authors.affiliation: School of Psychological Sciences, Zochonis Building, Brunswick Street, University of Manchester, Manchester M13 9PL, UK. gillian.haddock@manchester.ac.uk
authors.forename: Gillian
authors.initials: G
authors.lastname: Haddock
authors.forename: Ruth
authors.initials: R
authors.lastname: Beardmore
authors.forename: Paul
authors.initials: P
authors.lastname: Earnshaw
authors.forename: Mike
authors.initials: M
authors.lastname: Fitzsimmons
authors.forename: Sarah
authors.initials: S
authors.lastname: Nothard
authors.forename: Rebecca
authors.initials: R
authors.lastname: Butler
authors.forename: Emily
authors.initials: E
authors.lastname: Eisner
authors.forename: Christine
authors.initials: C
authors.lastname: Barrowclough
mesh_terms: D015928:Cognitive Behavioral Therapy / Q000379:methods*; D006801:Humans; D007406:Interview, Psychological / Q000379:methods*; D009042:Motivation; D015588:Observer Variation; D011594:Psychometrics; D011618:Psychotic Disorders / Q000150:complications / Q000523:psychology / Q000628:therapy*; D015203:Reproducibility of Results; D012559:Schizophrenia / Q000628:therapy; D012565:Schizophrenic Psychology; D019966:Substance-Related Disorders / Q000150:complications / Q000523:psychology / Q000628:therapy*