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Open Access Study protocol

Relating therapy for voices (the R2V study): study protocol for a pilot randomized controlled trial

Mark Hayward1*, Clara Strauss2 and Leanne Bogen-Johnston2

Author Affiliations

1 School of Psychology, University of Sussex, BN1 9RH Brighton, UK

2 Research & Development Department, Sussex Partnership NHS Foundation Trust, Nevill Avenue, BN3 7HZ Hove, UK

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Trials 2014, 15:325  doi:10.1186/1745-6215-15-325

Published: 16 August 2014

Abstract

Background

Evidence exists for the effectiveness of cognitive behaviour therapy for psychosis with moderate effect sizes, but the evidence for cognitive behaviour therapy specifically for distressing voices is less convincing. An alternative symptom-based approach may be warranted and a body of literature has explored distressing voices from an interpersonal perspective. This literature has informed the development of relating therapy and findings from a case series suggested that this intervention was acceptable to hearers and therapists.

Methods/Design

An external pilot randomized controlled trial (RCT) comparing outcomes for 15 patients receiving 16 hours (weekly sessions of one hour) of relating therapy and their usual treatment with 15 patients receiving only their usual treatment. Participants will be assessed using questionnaires at baseline, 16 weeks (post-intervention), and 36 weeks (follow-up).

Discussion

Expected outcomes will include a refined study protocol and an estimate of the effect size to inform the sample size of a definitive RCT. If evidence from a fully powered RCT suggests that relating therapy is effective, the therapy will extend the range of evidence-based psychological therapies available to people who hear distressing voices.

Trial registration

Current Controlled Trials ISRCTN registration number 44114663. Registered on 13 June 2013.

Keywords:
Auditory hallucinations; Voices; Interpersonal; Relationship; CBT; Psychosis