Cognitive-behavioral group therapy versus group psychotherapy for social anxiety disorder among college students: a randomized controlled trial.

OBJECTIVE: In this randomized controlled trial, cognitive-behavioral group therapy (CBGT) for social anxiety disorder (SAD) was compared to group psychotherapy (GPT), a credible, structurally equivalent control condition that included only nonspecific factors of group treatment (such as group dynamics). METHODS: Participants were 45 college students at the University of Colorado with a primary diagnosis of SAD. Each treatment condition comprised eight group sessions lasting 2 hr each. Independent assessors (blind to treatment assignment) assessed participants at baseline and posttreatment with the Clinical Global Impression Scale (CGI) and the Liebowitz Social Anxiety Scale (LSAS). RESULTS: Both treatments were found to be equally credible. There were five noncompleters in the CBGT condition (21.7%) and only one in the GPT condition (4.3%). There were no statistically significant differences posttreatment (controlling for pretreatment scores) between the two treatment conditions, and both treatments were found to be efficacious. Effect sizes for CBGT were similar to earlier studies, and adherence ratings revealed excellent adherence. CONCLUSIONS: Treatment of SAD appears to be moving toward individual CBT, partly because of high attrition rates and underutilization of group dynamics in group CBT. However, group therapy has unique therapeutic ingredients, and it may be too early to give up on group treatment altogether. Discussion of these findings included future directions with this treatment modality, especially whether these two types of group treatment could be combined and whether such combination might serve to decrease attrition, enhance efficacy, and facilitate dissemination.

Mindfulness-Based Cognitive Therapy for Perinatal Women with Depression or Bipolar Spectrum Disorder.

The perinatal period is a high-risk time for mood deterioration among women vulnerable to depression. This study examined feasibility, acceptability, and improvement associated with mindfulness-based cognitive therapy (MBCT) in perinatal women with major depressive disorder (MDD) or bipolar spectrum disorder (BSD). Following a diagnostic evaluation, 39 perinatal women with a lifetime history of MDD (n = 27) or BSD (n = 12) enrolled in an 8-week program of MBCT classes (2 h each) that incorporated meditation, yoga, and mood regulation strategies. Participants were pregnant (n = 12), planning pregnancy (n = 11), or up to 1-year postpartum (n = 16). Participants were self-referred and most had subthreshold mood symptoms. Assessments of depression, (hypo)mania, and anxiety were obtained by interview and self-report at baseline, post-treatment and at 1- and 6-month post-treatment. Women with a history of MDD were more likely to complete the classes than women with BSD. Of 32 women who completed the classes, 7 (21.9 %) had a major depressive episode during the 6-month post-treatment follow-up. On average, participants with MDD reported improvements in depression from pre- to post-treatment. Mood improvement was not observed in the BSD group. In the full sample, improvements in depression symptoms across time points were associated with increasing mindful tendency scores. This study was limited by its uncontrolled design, heterogeneous sample, and questionnaire-based assessment of mindfulness skills. MBCT may be an important component of care for perinatal women with histories of major depression. Its applicability to perinatal women with BSD is unclear.

Evidence against age-related enlargements of ganglion cell receptive field centers under scotopic conditions.

Age-related changes in the neural organization of spatial information are required to account for much of the senescent loss in human scotopic spatial vision, specifically declines in the high spatial frequency cut-off of the contrast sensitivity function and enlargements of the area over which there is complete spatial summation (Ricco's area). These results are consistent with hypothesized enlargements of ganglion cell receptive field centers during adulthood. This hypothesis was tested with 50 subjects (19-88 years) by measuring contrast thresholds for two low spatial frequency gratings (0.3 and 1.2 cycles per degree) at a series of scotopic mean illuminance levels. Contrast sensitivity increased with retinal illuminance and then reached a plateau, corresponding to the onset of Weber-like behavior. No age-related change in the light level associated with the onset of Weber-like behavior was found at either spatial frequency. This result is inconsistent with proposed age-related enlargements of ganglion cell receptive field centers under scotopic conditions.

Prevention of recurrence of major depression among emerging adults by a group cognitive-behavioral/interpersonal intervention.

BACKGROUND: Among the most serious sequelae to an initial episode of Major Depressive Disorder (MDD) during adolescence is the significant increase in the probability of recurrence. This study reports on an integrated CBT/IPT program, provided in a group format, that was developed to decrease the rate of MDD recurrence in emerging adults. METHODS: Participants were 89 young adults who were not depressed at study entry but had experienced MDD during adolescence. Participants were assigned to a CBT/IPT prevention program or to an assessment only control condition and were followed through the first 2 years of college. RESULTS: Risk for MDD recurrence was reduced more than 50% for the prevention program participants compared to assessment only controls. The intervention also conferred beneficial effects on academic performance for those students who completed the majority of the group sessions. LIMITATIONS: The study included a self-selected sample of emerging adults who were aware of their history of depression. Due to the small sample size, it will be important to evaluate similar interventions in adequately-powered trials to determine if this is a replicable finding. CONCLUSIONS: With 51% of the assessment only participants experiencing a MDD recurrence during the first 2 years of college, these findings support the need for programs designed to prevent MDD recurrence in young adults. The current program, based on IPT and CBT principles, appears to reduce the rate of MDD recurrence among previously depressed emerging adults.