ORCID Profile
0000-0003-4399-6859
Current Organisation
University of Nevada Reno
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Publisher: Elsevier BV
Date: 12-2020
Publisher: Elsevier BV
Date: 09-2022
Publisher: Elsevier BV
Date: 2022
Publisher: Elsevier BV
Date: 07-2022
Publisher: Elsevier BV
Date: 06-2019
Publisher: Springer Science and Business Media LLC
Date: 11-07-2014
Publisher: Royal College of Psychiatrists
Date: 02-2017
DOI: 10.1192/BJP.BP.116.182865
Abstract: The efficacy of acceptance and commitment therapy (ACT) in psychosis has been reported but not for medication-resistant psychosis. To test the efficacy of ACT in a s le of community-residing patients with persisting psychotic symptoms. (Australian New Zealand Clinical Trials Registry: ACTRN12608000210370.) The primary outcome was overall mental state at post-therapy (Positive and Negative Syndrome Scale –total) secondary outcomes were psychotic symptom dimensions and functioning. In total, 96 patients were randomised to ACT ( n = 49) or befriending ( n = 47). Symptom, functioning and process measures were administered at baseline, post-therapy and 6 months later. There was no group difference on overall mental state. In secondary analyses the ACT group showed greater improvement in positive symptoms and hallucination distress at follow-up: Cohen's d = 0.52 (95% CI 0.07–0.98) and 0.65 (95% CI 0.24–1.06), respectively. Improvements reflected the treatment focus on positive symptoms however, absence of process-measure changes suggests that the ACT intervention used did not manipulate targeted processes beyond befriending. Symptom-specific therapy refinements, improved investigation of process and attention to cognitive functioning and dose are warranted in future research.
Publisher: Elsevier BV
Date: 03-2011
Publisher: Routledge
Date: 21-08-2006
Publisher: Wiley
Date: 2007
DOI: 10.1002/JCLP.20366
Abstract: Acceptance and mindfulness methods that emphasise the acceptance rather than control of symptoms are becoming more central to behavioural and cognitive therapies. Acceptance and Commitment Therapy (ACT) is the most developed of these methods recent applications of ACT to psychosis suggest it to be a promising therapeutic approach. However, investigation of the mechanisms of therapy within this domain is difficult because there are no acceptance-based measures available specifically for psychotic symptoms. This paper describes the preliminary evaluation of a self-report instrument designed to assess acceptance-based attitudes and actions in relation to auditory and command hallucinations. Following initial scale development, a 56-item version of the Voices Acceptance and Action Scale (VAAS) was administered to 43 participants with command hallucinations as part of their baseline assessment in a larger trial. Measures of symptoms, quality of life, and depression were also administered. The scale was examined for reliability using corrected item total statistics. Based on this method, 31 items were retained. Internal consistency and test-retest reliability for the 31-item VAAS were acceptable. Subsequent examination of construct validity showed the VAAS to correlate significantly in the expected directions with depression, quality of life, and coping with command hallucinations. It also discriminated compliance from non-compliance with harmful command hallucinations. Although these results are preliminary and subject to a number of limitations, the VAAS shows promise as a useful aid in the assessment of the psychological impact of voices.
Publisher: Elsevier BV
Date: 10-2017
DOI: 10.1016/J.BRAT.2017.05.016
Abstract: Öst's (2014) systematic review and meta-analysis of Acceptance and Commitment Therapy (ACT) has received wide attention. On the basis of his review, Öst argued that ACT research was not increasing in its quality and that, in contradiction to the views of Division 12 of the American Psychological Association (APA), ACT is "not yet well-established for any disorder" (2014, p. 105). We conducted a careful examination of the methods, approach, and data used in the meta-analysis. Based in part on examinations by the authors of the studies involved, which were then independently checked, 91 factual or interpretive errors were documented, touching upon 80% of the studies reviewed. Comparisons of Öst's quality ratings with independent teams rating the same studies with the same scale suggest that Ost's ratings were unreliable. In all of these areas (factual errors interpretive errors quality ratings) mistakes and differences were not random: Ost's data were dominantly more negative toward ACT. The seriousness, range, and distribution of errors, and a wider pattern of misinterpreting the purpose of studies and ignoring positive results, suggest that Öst's review should be set aside in future considerations of the evidence base for ACT. We argue that future published reviews and meta-analyses should rely upon erse groups of scholars rather than a single in idual that resulting raw data should be made available for inspection and independent analysis that well-crafted committees rather than in iduals should design, apply and interpret quality criteria that the intent of transdiagnostic studies need to be more seriously considered as the field shifts away from a purely syndromal approach and that data that demonstrate theoretically consistent mediating processes should be given greater weight in evaluating specific interventions. Finally, in order to examine substantive progress since Öst's review, recent outcome and process evidence was briefly examined.
Publisher: Elsevier BV
Date: 04-2021
Publisher: Wiley
Date: 06-03-2013
Location: United States of America
Location: United States of America
No related grants have been discovered for Steven Hayes.