Mental imagery in generalized anxiety disorder: A comparison with healthy control participants.

Mental imagery plays a prominent role across psychopathology. However, its quality and role in generalized anxiety disorder (GAD) have not been examined as extensively as in other disorders. The goal of the present study was to obtain a better understanding of general imagery processes and individual differences in people with GAD. Adults with GAD (N = 31) were compared to a Healthy Control (HC) group (N = 32) across mental imagery domains as per Pearson, Deeprose, Wallace-Hadrill, Heyes, and Holmes (2013)'s framework: cognitive, general use/experience, and clinical. No differences were found between the GAD and HC groups on cognitive aspects of imagery. Both groups were also similar in their ability to imagine experiences across sensory modalities. No differences were found between groups in their spontaneous use of imagery in everyday situations, or in vividness of sensory-perceptual imagery. For clinical aspects of imagery, between-group differences emerged in the experience of prospective imagery; those with GAD reported greater "pre-experiencing" ("intrusive, prospective, personally-relevant imagery"; Deeprose & Holmes, 2010), rated imagined future negative scenarios as more vivid, more likely, and more personally relevant, and evaluated the experience of these images as more intense than did HCs. Taken together, findings suggest that the presence of intrusive mental imagery distinguishes individuals with GAD from those without psychopathology. Findings could help improve interventions utilizing imagery techniques.

Advancing bipolar disorder: key lessons from the Systematic Treatment Enhancement Program for Bipolar Disorder (STEP-BD).

OBJECTIVE: To review the overall clinical research findings from the Systematic Treatment Enhancement Program for Bipolar Disorder (STEP-BD), the world's largest study of BD. METHODS: STEP-BD was conducted from 1998 to 2005, enrolling participants (n = 4361) across 22 clinical sites in the United States. Each individual was followed for up to 2 years in naturalistic practice with blinded research assessments, while subgroups participated in randomized controlled trials (RCTs) for bipolar depression. The naturalistic database was used to examine the course of BD, comorbidity with other psychiatric disorders, and suicidality. Relevant studies in English, published from January 1, 1994, to May 31, 2009, were identified using computerized searches of electronic databases (PubMed, PsycINFO, and Cochrane Register of Clinical Trials), inspection of bibliographies, and review of other major reports. RESULTS: One large RCT involving the addition of either paroxetine or bupropion to mood stabilizers in acute depression found neither more effective than placebo in achieving sustained recovery (8 weeks of euthymia). A second large RCT found intensive psychosocial interventions superior to a brief psychosocial intervention as an adjunct to medication in acute depression. A third small RCT found minimal effects of lamotrigine, risperidone, or inositol in refractory depression. Recovery was difficult to achieve, with subsyndromal symptoms or full relapse very common. Anxiety disorders and smoking in particular were treatable conditions that adversely affected the course of BD. CONCLUSIONS: STEP-BD yielded numerous clinical and systems observations that provide fresh direction for research and treatment of BD, including setting new benchmarks for outcome and demonstrating the viability of large BD networks.