• Clin Psychol Psychother · Sep 2015

    Psychometric Properties of Two Brief Versions of the Voices Acceptance and Action Scale (VAAS): Implications for the Second-wave and Third-wave Behavioural and Cognitive Approaches to Auditory Hallucinations.

    • Robert Brockman, Michael Kiernan, and Elizabeth Murrell.
    • Charles Sturt University, Bathurst, NSW, Australia.
    • Clin Psychol Psychother. 2015 Sep 1; 22 (5): 450-9.

    UnlabelledDespite a steep rise in the evidence base for third-wave cognitive and behavioural therapy approaches over the past decade, a scarcity of change measures relevant to these therapies as applied to psychosis is arguably slowing empirical progress in the area. The Voices Acceptance and Action Scale (VAAS), a measure of acceptance of voice experiences, is a notable exception. However, there are no published data on its psychometric properties outside of that provided by the scale developers. The current study explored the psychometric properties of two brief versions of the VAAS in a sample of psychotic voice hearers in a routine outpatient mental health service. Evidence from the current study suggests that both brief versions are robust measures of acceptance of voice experiences. Some limited support for the shortened VAAS-9 as being a marginally improved scale over the original brief VAAS-12 was also found. The current study found acceptance of voices to be highly related to depression, anxiety, stress and general negative affect and to predict unique variance in depression and general negative affect beyond that attributable to negative beliefs about voices and thought suppression. It was also found that acceptance was positively related to the use of reappraisal, indicating that the distinctiveness of acceptance from appraisal processes may be less pronounced in this context than what was has been reported previously. Implications for future research, as well as the practice of second-wave and third-wave cognitive and behavioural approaches to psychosis, are discussed.Key Practitioner MessageTwo brief versions of the VAAS instrument were found to be robust measures of acceptance of psychotic voice experiences. The construct of acceptance of voices is highly related to indices of well-being and negative appraisal processes in psychosis and appears to offer an alternative route to therapeutically addressing the toxic effects of negative beliefs about voices. The recent focus on acceptance-based techniques within cognitive and behavioural approaches to psychosis was supported.Copyright © 2014 John Wiley & Sons, Ltd.

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