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It is becoming more broadly recognized that beyond effectiveness, the acceptability of interventions for anxiety disorders is an important consideration for evidence-based practice. Although advances in treatments for anxious psychopathologies have demonstrated that cognitive-behavioural interventions are more desirable than other types of psychotherapy or pharmacotherapy, there continue to be problems with adherence and dropout. It has been suggested that low treatment acceptability may be partially responsible for high dropout rates. Although a number of preliminary investigations in this domain have been conducted, further progress is hampered by the absence of a single self-report measure that assesses both acceptability and anticipated adherence. Therefore, the current paper aimed to test the psychometric properties of the newly developed Treatment Acceptability/Adherence Scale (TAAS). In two studies of brief cognitive-behavioural interventions, the TAAS was administered immediately following the therapy session. In Study 1 (N = 120 non-clinical undergraduates), the therapy included two variants of an exposure-based intervention for contamination fear. In Study 2 (N = 27 individuals with obsessive-compulsive disorder), the therapy was a cognitively based intervention evaluating a novel treatment technique for checking compulsions. Measures of convergent and divergent validity were included. Results demonstrated that the TAAS exhibited sound psychometric properties across the two samples. It is hoped that this measure will help clinicians to predict and intervene when a treatment is not acceptable and/or when the client anticipates poor adherence to it. Furthermore, the TAAS may aid researchers in continuing to improve upon effective interventions for anxiety and related disorders.

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Background-The extant literature supports an association between psychological trauma and development of OCD in adults, and this link is a plausible mediator for environment gene interactions leading to phenotypic expression of OCD.

Objective: Hoarding disorder (HD) is a common and potentially debilitating psychiatric disorder. Thus far, psychological treatments have yielded modest effects and/or were time-consuming and costly to deliver. The aim of the present study was to test the efficacy of a brief group cognitive-behavioral therapy (CBT) for adults with HD and to test hypothesized mediators of treatment outcome. Method: Eighty-seven adults with a primary diagnosis of HD were randomized to either immediate CBT or wait list. CBT consisted of 16 weekly, 90-min group sessions that emphasized in-session practice of discarding and refraining from acquiring, decision-making and problem-solving training, emotional distress tolerance, motivational interviewing strategies, and contingency management. Participants were assessed at pretreatment, midtreatment, and posttreatment by an independent evaluator unaware of treatment condition. Results: CBT was efficacious for the symptoms of HD compared with wait list. Saving-related cognitions, but not subjective cognitive impairment, partially mediated treatment outcomes. Conclusion: Brief Group CBT is an efficacious and feasible treatment for adults with HD, and is partially mediated by reductions in maladaptive beliefs about possessions. Superiority trials comparing CBT to active treatments, and additional research into mechanisms of treatment outcome, are warranted. What is the public health significance of this article?Hoarding disorder (HD) is a common and often severe psychiatric illness. As a new diagnosis, it has received less research attention than many other disorders. Treatment efficacy for HD also lags behind that of many other psychiatric disorders. This study suggests that a relatively brief (16session) Group CBT is efficacious for adults with HD, with 83% of patients classified as improved. These results support the consideration of Group CBT as a first-line treatment for HD.