A meta-analytic review of adult cognitive-behavioral treatment outcome across the anxiety disorders

Therapist-led and self-led one-session virtual reality exposure therapy for public speaking anxiety with consumer hardware and software: A randomized controlled trial

Public speaking anxiety (PSA) is a common condition which can be treated effectively with exposure therapy. However, inherent difficulties in stimuli presentation and control limits dissemination and the therapeutic potential. Virtual Reality (VR) technology has the potential to resolve these issues and provide a scalable platform for self-help interventions. No previous study has examined whether this can be achieved using the first generation of consumer VR hardware and software. In the current trial, n = 25 + 25 participants were randomized to either one-session therapist-led VR exposure therapy for PSA followed by a four-week internet-administered VR to in-vivo transition program, or a waiting-list. Linear mixed effects modeling revealed significant, large (within Cohen's d = 1.67) decreases in self-reported PSA. The waiting-list was then given access to an internet-administered, self-led version of the same VR exposure therapy to be conducted at home, followed by the same transition program. Dual-slope mixed effects modeling revealed significant, large (d = 1.35) decreases in self-reported PSA. Results were maintained or improved at six- and twelve-month follow-ups. We show for the first time that low-cost, off-the-shelf consumer VR hardware and software can be used to conduct exposure therapy for PSA, both in the traditional, previously impractical one-session format, and in a novel self-led, at-home format.

Royal Australian and New Zealand College of Psychiatrists clinical practice guidelines for the treatment of panic disorder, social anxiety disorder and generalised anxiety disorder

Objective:

To provide practical clinical guidance for the treatment of adults with panic disorder, social anxiety disorder and generalised anxiety disorder in Australia and New Zealand.

Method:

Relevant systematic reviews and meta-analyses of clinical trials were identified by searching PsycINFO, Medline, Embase and Cochrane databases. Additional relevant studies were identified from reference lists of identified articles, grey literature and literature known to the working group. Evidence-based and consensus-based recommendations were formulated by synthesising the evidence from efficacy studies, considering effectiveness in routine practice, accessibility and availability of treatment options in Australia and New Zealand, fidelity, acceptability to patients, safety and costs. The draft guidelines were reviewed by expert and clinical advisors, key stakeholders, professional bodies, and specialist groups with interest and expertise in anxiety disorders.

Results:

The guidelines recommend a pragmatic approach beginning with psychoeducation and advice on lifestyle factors, followed by initial treatment selected in collaboration with the patient from evidence-based options, taking into account symptom severity, patient preference, accessibility and cost. Recommended initial treatment options for all three anxiety disorders are cognitive–behavioural therapy (face-to-face or delivered by computer, tablet or smartphone application), pharmacotherapy (a selective serotonin reuptake inhibitor or serotonin and noradrenaline reuptake inhibitor together with advice about graded exposure to anxiety triggers), or the combination of cognitive–behavioural therapy and pharmacotherapy.

Conclusion:

The Royal Australian and New Zealand College of Psychiatrists clinical practice guidelines for the treatment of panic disorder, social anxiety disorder and generalised anxiety disorder provide up-to-date guidance and advice on the management of these disorders for use by health professionals in Australia and New Zealand.

A pragmatic randomized controlled trial of group transdiagnostic cognitive-behaviour therapy for anxiety disorders in primary care: study protocol

BACKGROUND

Anxiety disorders are the most common mental disorders in community settings, and they are associated with significant psychological distress, functional and social impairment. While cognitive behaviour therapy (CBT) is the most consistently efficacious psychological treatment for anxiety disorders, barriers preclude widespread implementation of CBT in primary care. Transdiagnostic group CBT (tCBT) focuses on cognitive and behavioural processes and intervention strategies common to different anxiety disorders, and could be a promising alternative to conventional CBT. This study aims to examine the effectiveness of a transdiagnostic group CBT for anxiety disorders program as a complement to treatment-as-usual (TAU) in primary mental health care.

METHODS/DESIGN

The trial is a multicentre pragmatic randomized controlled trial with a pre-treatment, post-treatment, and follow-up at 4, 8 and 12-months design. Treatment and control groups. a) tCBT (12 weekly 2-h group sessions following a manualized treatment protocol); b) TAU for anxiety disorders. Inclusion criteria comprise meeting DSM-5 criteria for primary Panic Disorder, Agoraphobia, Social Anxiety Disorder and/or Generalized Anxiety Disorder. Patients are recruited in three regions in the province of Quebec, Canada. The primary outcome measures are the self-reported Beck Anxiety Inventory and the clinician-administered Anxiety and Related Disorders Interview Schedule for DSM-5 (ADIS-5); secondary outcome measures include treatment responder status based on the ADIS-5, and self-reported instruments for specific anxiety and depression symptoms, quality of life, functioning, and service utilisation.

STATISTICAL ANALYSIS

Intention-to-treat analysis. A mixed effects regression model will be used to account for between- and within-subject variations in the analysis of the longitudinal effects of the intervention.

DISCUSSION

This rigorous evaluation of tCBT in the real world will provide invaluable information to decision makers, health care managers, clinicians and patients regarding the effectiveness of the intervention. Widespread implementation of tCBT protocols in primary care could lead to better effectiveness, efficiency, access and equity for the large number of patients suffering from anxiety disorders that are currently not obtaining evidence-based psychotherapy.

TRIAL REGISTRATION

ClinicalTrials.gov: NCT02811458 .

Resting-state functional magnetic resonance imaging investigation of the neural correlates of cognitive-behavioral therapy for externalizing behavior problems in adolescent bullies

The purpose of this study was to investigate the neural correlates of cognitive-behavioral therapy (CBT) for externalizing behavior problems in perpetrators of school bullying using assessments of brain activity and behavior. Twenty-five adolescent bullies participated in an 8-session intervention. Prior to and after participation, 24 adolescents were evaluated using the Child Behavior Checklist (CBCL) and 23 completed resting-state functional magnetic resonance imaging. Changes in the fractional amplitude of low-frequency fluctuations (fALFF) and scores on the CBCL were analyzed. We also compared the identified changes into 2 groups (low and high delinquency) differentiated by a cutoff of 65 points on the delinquency subscale of the CBCL. Following the intervention, participants exhibited improvement in the subscores of the CBCL and decreases in the fALFF of the inferior parietal lobule, lingual, interior frontal and middle occipital gyrus. A positive correlation was observed between changes in the CBCL externalizing behavior scores and fALFF of the inferior frontal gyrus. The high delinquency group showed a greater decrease in delinquency and externalizing CBCL subscores across time than did the low delinquency group. The high delinquency group had more areas that showed change in fALFF post-intervention than did the low delinquency group. A positive correlation was observed between changes in the CBCL delinquency scores and fALFF of the precentral gyrus in the high delinquency group. The results indicate that this CBT for externalizing behavior problems in bullies had more positive effects on delinquent behavior in adolescents with high levels of delinquency, and these changes were associated with functional changes in brain activity.

TRIAL REGISTRATION

ClinicalTrials.gov identifier: NCT02670876.

Virtual Reality for Anxiety Reduction Demonstrated by Quantitative EEG: A Pilot Study

While previous research has established that virtual reality (VR) can be successfully used in the treatment of anxiety disorders, including phobias and PTSD, no research has examined changes in brain patterns associated with the use of VR for generalized anxiety management. In the current study, we compared a brief nature-based mindfulness VR experience to a resting control condition on anxious participants. Self-reported anxiety symptoms and resting-state EEG were recorded across intervals containing quiet rest or the VR intervention. EEG activity was analyzed as a function of global power shifts in Alpha and Beta activity, and with sLORETA current source density estimates of cingulate cortex regions of interest. Results demonstrated that both a quiet rest control condition and the VR meditation significantly reduced subjective reports of anxiety and increased Alpha power. However, the VR intervention uniquely resulted in shifting proportional power from higher Beta frequencies into lower Beta frequencies, and significantly reduced broadband Beta activity in the anterior cingulate cortex. These effects are consistent with a physiological reduction of anxiety. This pilot study provides preliminary evidence supporting the therapeutic potential of VR for anxiety management and stress reduction programs.

Treatment of Anxiety in Patients With Coronary Heart Disease: A Systematic Review

BACKGROUND

Anxiety is common in patients with coronary heart disease (CHD) and is associated with an increased risk for adverse outcomes. There has been a relative paucity of studies concerning treatment of anxiety in patients with CHD.

OBJECTIVE

We conducted a systematic review to organize and assess research into the treatment of anxiety in patients with CHD.

METHODS

We searched CCTR/CENTRAL, MEDLINE, EMBASE, PsycINFO, and CINAHL for randomized clinical trials conducted before October 2016 that measured anxiety before and after an intervention for patients with CHD.

RESULTS

A total of 475 articles were subjected to full text review, yielding 112 publications that met inclusion criteria plus an additional 7 studies from reference lists and published reviews, yielding 119 studies. Sample size, country of origin, study quality, and demographics varied widely among studies. Most studies were conducted with nonanxious patients. The Hospital Anxiety and Depression Scale and State-Trait Anxiety Inventory were the most frequently used instruments to assess anxiety. Interventions included pharmacological, counseling, relaxation-based, educational, or "alternative" therapies. Forty (33% of total) studies reported that the interventions reduced anxiety; treatment efficacy varied by study and type of intervention. Elevated anxiety was an inclusion criterion in only 4 studies, with inconsistent results.

CONCLUSION

Although there have been a number of randomized clinical trials of patients with CHD that assessed anxiety, in most cases anxiety was a secondary outcome, and only one-third found that symptoms of anxiety were reduced with treatment. Future studies need to target anxious patients and evaluate the effects of treatment on anxiety and relevant clinical endpoints.

Examining the Impact of Trauma-Informed Cognitive Behavioral Therapy on Perinatal Mental Health Outcomes Among Survivors of Intimate Partner Violence (The PATH Study): Protocol for a Feasibility Study

Background

Intimate partner violence (IPV) is a pervasive public health problem, impacting the health and quality of life of survivors worldwide. The trauma of IPV is associated with a high incidence of mental illness, namely depressive and anxiety disorders, and posttraumatic stress disorder (PTSD). Moreover, literature endorses cognitive behavioral therapy (CBT) interventions as a gold standard for those with symptomatology consistent with anxiety disorders, mood disorders, and PTSD. However, efficacy has not been evaluated among a population of pregnant survivors of IPV.

Objective

We present the protocol that will be used to explore the efficacy of trauma-informed cognitive behavioral therapy on maternal and child health outcomes for pregnant women with PTSD, depression, or anxiety symptomatology resulting from IPV. A secondary aim will be to test the validity and feasibility of study methodology to support the successful implementation of a full-scale randomized controlled trial.

Methods

The Promoting Attachment Through Healing (PATH) study will use a mixed-methods approach grounded in an intersectional feminist framework to explore the effectiveness of trauma-informed CBT for pregnant survivors of IPV. Study participants will be recruited through the hospital-based Perinatal Mental Health Clinic (London, Ontario, Canada). A feasibility sample of 20 pregnant women (cohort 1) will be selected to engage in an eight-session antenatal CBT intervention facilitated by the program’s perinatal clinical nurse specialist, with evaluation at baseline, at two months postpartum (intervention and online questionnaire), and at six and twelve months postpartum (online questionnaire only). Concurrently, we will conduct a retrospective audit of 100 medical charts (cohort 2; 50 charts of perinatal women who received CBT and 50 charts of women who did not receive perinatal CBT) from the past five years. The efficacy of the intervention will be based on a reduction of mental illness symptomatology, improved maternal-infant attachment, maternal coping, and maternal quality of life. Additionally, the feasibility of the protocol and acceptability of the intervention from the women’s perspective will be examined. Inductive content analysis of all qualitative data will be used to determine common themes. Additionally, descriptive statistics, including measures of central tendency and dispersion, will be computed for all continuous variables. Alternatively, frequency tables will be constructed for all categorical variables.

Results

The work reported here is in the proposal phase. Once the protocol is implemented, we will report the results in a follow-up paper. Participant recruitment for cohort 1 has started and we have finished data collection for cohort 2. It is anticipated that the results will be available by the end of 2018.

Conclusions

Findings will assess the acceptability of the study methodology and protocol for a full-scale randomized controlled trial. Furthermore, if CBT is proven effective for pregnant survivors of IPV, this intervention could be readily adopted by health care and social support services, thereby contributing to an improved standard of care for this unique population.

Trial Registration

ClinicalTrials.gov NCT03536442; https://www.clinicaltrials.gov/ct2/show/NCT03536442 (Archived by WebCite at http://www.webcitation.org/6zeurv1ay)

Registered Report Identifier

RR1-10.2196/9820

A Web-Based Transdiagnostic Intervention for Affective and Mood Disorders: Randomized Controlled Trial

BACKGROUND

Research increasingly supports a transdiagnostic conceptualization of emotional disorders (ie applying the same underlying treatment principles across mental disorders, without tailoring the protocol to specific diagnoses), and many international researchers are currently investigating this issue.

OBJECTIVE

The aim of this study was to evaluate the efficacy and acceptability of a Web-based transdiagnostic program using a sample of Romanian adults diagnosed with anxiety and/or depression.

METHODS

Volunteer participants registered for the study and completed a series of online self-report measures. Participants who fulfilled basic inclusion criteria on these measures were contacted for a telephone diagnostic interview using the Structural Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders, 4th Edition Axis I Disorders (SCID-I). Enrolled participants were randomized to either the active treatment group (N=69) or the wait-list control group (N=36) using a 2:1 ratio. The transdiagnostic treatment was based on the Unified Protocol for Transdiagnostic Treatment of Emotional Disorders (UP; Barlow et al, 2011) that addresses common underlying mechanisms of anxiety and depression. Participants randomized to the active treatment condition received 10 weeks of Web-based treatment based on the UP. Throughout treatment, graduate students in clinical psychology provided guidance that consisted of asynchronous written communication on a secure Web platform. After the intervention, participants in both study conditions were invited to complete a set of self-report measures and a postintervention SCID-I interview conducted by a different team of graduate students blinded to participants' group and diagnostic status. Six months later, participants in the active treatment group were invited to complete an online follow-up assessment.

RESULTS

During the intervention, active treatment participants completed on average 19 homework assignments (SD 12.10), and we collected data from 79.0% (83/105) at postintervention and 51% (35/69) at follow-up for self-report measures. Postintervention SCID-I interviews were collected from 77.1% (81/105) participants. Relative to the wait-list control group, the transdiagnostic intervention yielded overall medium to large effect sizes for the primary outcome measures (within-group Hedges g=0.52-1.34 and between-group g=0.39-0.86), and also for anxiety sensitivity (g=0.80), symptom interference (g=0.48), and quality of life (g=0.38). Significant within-groups effects only were reported for the active treatment group on Panic Disorder Severity Scale-Self Report (PDSS-SR, g=0.58-0.65) and Yale-Brown Obsessive Compulsive Scale (Y-BOCS, g=0.52-0.58).

CONCLUSIONS

Insignificant between-group differences for the Y-BOCS and PDSS-SR could be explained by the small number of participants with the associated primary diagnostic (eg, only 3 participants with obsessive compulsive disorder) by the choice of outcome measure (PDSS-SR was not rated among the evidence-based measures) and by the fact that these disorders may be more difficult to treat. However, the overall results suggest that the transdiagnostic intervention tested in this study represents an effective treatment option that may prove easier to disseminate through the use of Web-based delivery systems.

TRIAL REGISTRATION

ClinicalTrials.gov CT02739607; https://clinicaltrials.gov/ct2/show/study/NCT02739607 (Archived by WebCite at http://www.webcitation.org/6yY1VeYIZ).

The Role of Performance Quality in Adolescents' Self-Evaluation and Rumination after a Speech: Is it Contingent on Social Anxiety Level?

BACKGROUND

Cognitive behavioural therapy (CBT) has relatively poor outcomes for youth with social anxiety, possibly because broad-based CBT is not tailored to their specific needs. Treatment of social anxiety in youth may need to pay more attention to negative social cognitions that are considered a key factor in social anxiety development and maintenance.

AIMS

The aim of the present study was to learn more about the role of performance quality in adolescents' cognitions about their social performance and, in particular, the moderating role social anxiety plays in the relationship between performance quality and self-cognitions.

METHOD

A community sample of 229 participants, aged 11 to 18 years, gave a speech and filled in questionnaires addressing social anxiety, depression, expected and self-evaluated performance, and post-event rumination. Independent observers rated the quality of the speech. The data were analysed using moderated mediation analysis.

RESULTS

Performance quality mediated the link between expected and self-evaluated performance in adolescents with low and medium levels of social anxiety. For adolescents with high levels of social anxiety, only a direct link between expected and self-evaluated performance was found. Their self-evaluation was not related to the quality of their performance. Performance quality also mediated the link between expected performance and rumination, but social anxiety did not moderate this mediation effect.

CONCLUSIONS

Results suggest that a good performance does not help socially anxious adolescents to replace their negative self-evaluations with more realistic ones. Specific cognitive intervention strategies should be tailored to the needs of socially anxious adolescents who perform well.

Utility of the Outcome Questionnaire-45.2 in outpatient anxiety clinics: A comparison between anxiety patients with and without co-occurring depression

OBJECTIVE

The Outcome Questionnaire-45.2 (OQ-45) is a self-report measure of general psychological distress. Although intended to be transdiagnostic, the OQ-45 may be best conceptualized as a measure of depression; as such, its utility in assessing other symptoms such as anxiety is unclear.

METHOD

We examined scores on the OQ-45 in a sample of 329 patients with anxiety and related disorders, half of whom had co-occurring depression.

RESULTS

Eighty-two percent of patients scored above the OQ-45 cutoff, whereas 18% were incorrectly screened out. Patients with co-occurring depression were more likely to score above the OQ-45 cutoff than nondepressed patients. Depression severity predicted many of the OQ-45 scales, even after controlling for anxiety severity. By contrast, most of the anxiety-specific measures failed to predict the OQ-45 after controlling for depression severity.

CONCLUSIONS

Findings suggest that the OQ-45 may not adequately capture anxiety symptoms and are discussed in terms of diagnostic screening and assessment.

Psychological interventions for anxiety in adult primary care patients: A review and recommendations for future research

Anxiety symptoms are prevalent in primary care, yet treatment rates are low. The integration of behavioral health providers into primary care via the Primary Care Behavioral Health (PCBH) model offers a promising way to improve treatment options by adding a team member with the necessary skillset to deliver evidence-based psychological interventions for anxiety. We conducted a narrative review of psychological interventions for anxiety applied within adult primary care settings (k = 44) to update the literature and evaluate the fit of existing interventions with the PCBH model. The majority of studies were randomized controlled trials (RCTs; 70.5%). Most interventions utilized cognitive-behavioral therapy (68.2%) and were delivered individually, face-to-face (52.3%). Overall, 65.9% of interventions (58.6% of RCTs, 91.7% of pre-post) were effective in reducing anxiety symptoms, and 83.3% maintained the gains at follow-up. Although it is encouraging that most interventions significantly reduced anxiety, their longer formats (i.e., number and duration of sessions) and narrow symptom targets make translation into practice difficult. Methodological limitations of the research included homogenous samples, failure to report key procedural details, pre-post designs, and restrictive eligibility criteria. We offer recommendations to guide future research to improve the likelihood of successful translation of anxiety interventions into clinical practice.

Building physiological toughness: Some aversive events during extinction may attenuate return of fear

BACKGROUND AND OBJECTIVES

Although exposure therapy is an effective treatment for anxiety disorders, fear sometimes returns following successful therapy. Recent literature in animal models indicates that incorporating some aversive events into extinction training may offset these return of fear effects.

METHODS

The effect of occasional reinforced extinction trials was investigated in a sample of thirty-nine participants using a fear conditioning and extinction paradigm. Participants either underwent traditional extinction procedures during which the conditional stimulus which had been paired with the unconditional stimulus (US) during acquisition training (CS+) was presented alone with no presentations of the US or partially reinforced extinction during which there were several unpredicted CS+/US pairings.

RESULTS

As measured by skin conductance responses, physiological fear responding remained elevated during extinction for participants who experienced partially reinforced extinction; however, these participants demonstrated protection from rapid reacquisition effects. Results from the subjective US-expectancy ratings did not provide evidence of protection against rapid reacquisition in the partially reinforced extinction group; however, there was evidence of protection from spontaneous recovery effects. Lastly, as measured by valence ratings, it was unclear whether partially reinforced extinction provided protection from fear recovery effects.

LIMITATIONS

Although participants who experienced partially reinforced extinction demonstrated protection from rapid reacquisition as measured by skin conductance responses, they also demonstrated significantly higher levels of physiological fear responding during extinction which made the results of the spontaneous recovery test more difficult to interpret.

CONCLUSIONS

Occasional CS-US pairings during extinction may protect against return of fear effects. Clinical implications are discussed.

Lower-order anxiety sensitivity and intolerance of uncertainty dimensions operate as specific vulnerabilities for social anxiety and depression within a hierarchical model

Within a hierarchical framework for depressive and anxiety disorders, negative affect (NA) is posited to be indirectly related to social anxiety and depression through cognitive vulnerabilities, including intolerance of uncertainty (IU) and anxiety sensitivity (AS). However, few prior studies have considered whether the lower-order dimensions of IU (i.e., prospective and inhibitory IU) and AS (i.e., physical, cognitive, and social concerns) better explain the indirect relation between NA and social anxiety and depression. The indirect relations between NA and social anxiety and depression through these cognitive vulnerabilities were examined using structural equation modeling in a clinical sample (N=298). NA and social anxiety symptoms were indirectly related through AS social concerns and inhibitory IU, although a direct effect of NA was also found. Only AS social concerns explained the relation between NA and a social anxiety disorder diagnosis. AS cognitive concerns was the only cognitive vulnerability factor to indirectly explain the relation between NA and depressive symptoms, although a direct effect of NA was also found. These findings suggest that the lower-order dimensions of AS and IU demonstrate more specific and less transdiagnostic associations with social anxiety and depression.

Development and Preliminary Psychometric Evaluation of Decisional Balance and Self-Efficacy Measures for Managing Anxiety in a National Sample of Clinically Anxious Adults

PURPOSE

Anxiety is the most common and costly mental illness in the United States. Reducing avoidance is a core element of evidence-based treatments. Past research shows readiness to address avoidance affects outcomes. Investigating avoidance from a transtheoretical model (TTM) perspective could facilitate tailored approaches for individuals with low readiness. This study developed and examined psychometric properties of TTM measures for addressing anxiety-based avoidance.

DESIGN

Cross-sectional survey.

SETTING

Community centers, online survey.

PARTICIPANTS

Five hundred ninety-four individuals aged 18 to 70 with clinically significant anxiety.

MEASURES

Overall Anxiety Severity Questionnaire, stages of change, decisional balance, and self-efficacy.

ANALYSIS

The sample was randomly split into halves for principal component analyses (PCAs) and confirmatory factor analyses (CFAs) to test measurement models. Further analyses examined relationships between constructs.

RESULTS

For decisional balance, PCA indicated two 5-item factors (pros and cons). Confirmatory factor analysis supported a 2-factor correlated model, Satorra-Bentler scaled chi-square [Formula: see text], comparative fit index (CFI = 0.94), root mean square error of approximation (RMSEA = 0.07), pros: α = 0.87, ρ = 0.87, cons: α = 0.75, and ρ = 0.75. For self-efficacy, PCA indicated one 6-item factor supported by CFA, [Formula: see text], P < .01, CFI = 0.98, RMSEA = 0.09, α = 0.90, ρ = 0.87. As hypothesized, significant cross-stage differences were observed for pros and self-efficacy, and significant relationships between anxiety severity and pros, cons, and self-efficacy were found.

CONCLUSION

Findings show strong psychometric properties and support the application of a readiness-based model to anxiety. In contrast to findings of other behaviors, cons remain high in action and maintenance. These measures provide a solid empirical foundation to develop TTM-tailored interventions to enhance engagement in treatment.

Improving perceptions of cognitive-behavioral therapy with brief website exposure: Does neuroscientific allure impact attitudes?

BACKGROUND AND OBJECTIVES

The current study aimed to determine whether brief exposure to a webpage about cognitive-behavioral therapy (CBT) for the anxiety disorders improved knowledge and perceptions of this treatment. Further, this study tested whether participants were uniquely compelled by CBT if the mechanism of change cited neurological processes.

METHOD

Participants (N = 389) recruited online viewed a webpage screenshot that described CBT for anxiety. Participants were randomized to view a version of the webpage which either described the mechanism of change as: 1) psychological, 2) neurological, 3) combination of neurological and psychological, or 4) no mechanism described. Participants completed measures of knowledge and perception of CBT before and after viewing the webpage. Credibility ratings and symptoms were assessed after viewing the webpage.

RESULTS

Knowledge of CBT was limited and perceptions were largely neutral to somewhat positive at baseline. Both knowledge and perceptions of CBT meaningfully improved after viewing the webpage. Mechanism of change did not impact perceptions of CBT or its credibility, though in the neurological and combination conditions there was less improvement in knowledge than in the psychological or control conditions. Greater symptoms of anxiety were associated with slightly less improvement in knowledge and perceptions.

LIMITATIONS

The study did not include long-term follow up, so the durability of the effects is unknown. Further, sample homogeneity undermines broad generalizability.

CONCLUSIONS

There is significant room and capacity to improve lay-people's knowledge and perceptions of CBT. Neurological explanations did not appear to uniquely promote the perception of CBT or its credibility.

Transdiagnostic Therapy

Transdiagnostic cognitive-behavioral (CBT) therapy is a modified form of CBT designed to be applicable with patients across the range of anxiety and related emotional disorders. Based on emerging genetic, neurologic, developmental, cognitive, and behavioral science, transdiagnostic CBT may alleviate barriers to dissemination and accessibility by providing a single treatment approach across diagnoses. Data from clinical trials and metaanalyses suggest treatment efficacy that is comparable with traditional CBT approaches, with possibly superior efficacy among patients with multiple comorbid anxiety and emotional diagnoses. Limitations in the evidence base and remaining areas for future research are discussed.

One for all: The effect of extinction stimulus typicality on return of fear

BACKGROUND AND OBJECTIVES

During exposure therapy, patients are encouraged to approach the feared stimulus, so they can experience that this stimulus is not followed by the anticipated aversive outcome. However, patients might treat the absence of the aversive outcome as an 'exception to the rule'. This could hamper the generalization of fear reduction when the patient is confronted with similar stimuli not used in therapy. We examined the effect of providing information about the typicality of the extinction stimulus on the generalization of extinction to a new but similar stimulus.

METHODS

In a differential fear conditioning procedure, an animal-like figure was paired with a brief electric shock to the wrist. In a subsequent extinction phase, a different but perceptually similar animal-like figure was presented without the shock. Before testing the generalization of extinction with a third animal-like figure, participants were either instructed that the extinction stimulus was a typical or an atypical member of the animal family.

RESULTS

The typicality instruction effectively impacted the generalization of extinction; the third animal-like figure elicited lower shock expectancies in the typical relative to the atypical group.

LIMITATIONS

Skin conductance data mirrored these results, but did not reach significance.

CONCLUSION

These findings suggest that verbal information about stimulus typicality can be a promising adjunctive to standard exposure treatments.

Basic Strategies of Cognitive Behavioral Therapy

Cognitive behavioral therapy's main strategies are active, problem-focused, and collaborative. Cognitive restructuring is a strategy in which clinicians help patients to identify, evaluate, and modify inaccurate or otherwise unhelpful thinking associated with emotional distress. Behavioral activation provides a framework for patients, particularly those who are depressed, to increase engagement in activities that provide a sense of accomplishment or pleasure. The goal of exposure is for anxious patients to experience an extinction of fear by having planned contact with feared stimuli and situations. Problem solving allows patients to systematically approach and address their life problems by using cognitive and behavioral techniques.

Generalization of Extinguished Fear to Untreated Fear Stimuli after Exposure

Exposure therapy is highly effective in treating excessive fear related to specific objects and/or situations. However, patients with anxiety disorders often display a generalization of fear responses toward conceptually and perceptually related stimuli and situations. It is unclear whether the beneficial effects of exposure on fear reduction toward treated fear stimuli can extend to untreated fear stimuli. Here, we investigated whether basic principles of extinction generalization apply to exposure. Spider-phobic participants were randomly assigned to either two sessions of exposure treatment (n=23) with spiders or no-treatment (n=24). Prior to and after treatment, behavioral approach tests (BATs) were conducted to examine avoidance, fear and disgust responses toward the treated phobic stimulus (spider as the extinction stimulus). Likewise, BATs with the untreated fear stimulus (cockroach) were conducted to dissect the generalization of treatment effects. Treatment was highly effective in increasing approach behavior toward both treated and untreated fear stimuli. Generalization of treatment effects were evident on the behavioral (approach distance during the BAT), subjective (fear levels during the BAT) and psychophysiological level (heart rate during the BAT). However, a stronger decline in disgust was only evident for the treated fear stimulus. Notably, the herein attained generalization effects were not context-dependent. Hence, exposure therapy for spider phobia was effective in reducing fear of untreated stimuli which share common fear-evoking characteristics with spiders but were never presented during the respective exposure treatment. These findings provide clinical evidence for extinction generalization across different fear-evoking stimuli mediated via exposure.

The role of safety signals in fear extinction: An analogue study

BACKGROUND AND OBJECTIVES

Safety signals are conditioned inhibitory stimuli that indicate the absence of unconditioned stimuli. It is not clear whether the presence of safety signals is detrimental or beneficial in extinction-based interventions. The purpose of this study was to evaluate the effect of safety signals on autonomic and expectancy fear-related responses.

METHODS

Following the conditional discrimination paradigm (AX +, BX-), undergraduate students (N = 48) underwent an aversive conditioning procedure, while safety signals were experimentally created. Participants were randomly assigned to one of two conditions during extinction: presence or absence of safety signals.

RESULTS

Significant reductions of fear-related responses were found in both groups. Expectancy measures showed that the presence of safety signals did not interfere with reduction of fear related responses at follow-up.

LIMITATIONS

The analogue nature of the study affects its ecological validity. There are some methodological issues.

CONCLUSIONS

Safety signals did not interfere with extinction learning. Attention may be a mechanism associated with the maintenance of fear responses.

Social Fear Conditioning Paradigm in Virtual Reality: Social vs. Electrical Aversive Conditioning

In a previous study we could show that social fear can be induced and extinguished using virtual reality (VR). In the present study, we aimed to investigate the belongingness effect in an operant social fear conditioning (SFC) paradigm which consisted of an acquisition and an extinction phase. Forty-three participants used a joystick to approach different virtual male agents that served as conditioned stimuli. Participants were randomly allocated to one of two experimental conditions. In the electroshock condition, the unconditioned stimulus (US) used during acquisition was an electric stimulation. In the social threat condition, the US consisted of an offense: a spit in the face, mimicked by a sound and a weak air blast to the participant's neck combined with an insult. In both groups the US was presented when participants were close to the agent (75% contingency for CS+). Outcome variables included subjective, psychophysiological and behavioral data. As expected, fear and contingency ratings increased significantly during acquisition and the differentiation between CS+ and CS- vanished during extinction. Furthermore, a clear difference in skin conductance between CS+ and CS- at the beginning of the acquisition indicated that SFC had been successful. However, a fast habituation to the US was found toward the end of the acquisition phase for the physiological response. Furthermore, participants showed avoidance behavior toward CS+ in both conditions. The results show that social fear can successfully be induced and extinguished in VR in a human sample. Thus, our paradigm can help to gain insight into learning and unlearning of social fear. Regarding the belongingness effect, the social threat condition benefits from a better differentiation between the aversive and the non-aversive stimuli. As next step we suggest comparing social-phobic patients to healthy controls in order to investigate possible differences in discrimination learning and to foster the development of more efficient treatments for social phobia.

Somatic symptom presentations in women with fibromyalgia are differentially associated with elevated depression and anxiety

This study examined whether depression and anxiety differentially relate to fatigue, sleep disturbance, pain catastrophizing, fear of movement, and pain severity in women with fibromyalgia. Baseline data from the Fibromyalgia Activity Study with Transcutaneous Electrical Nerve Stimulation were analyzed. Of 191 participants, 50 percent reported high anxiety and/or depression (17% high anxiety, 9% high depression, and 24% both). Fatigue and sleep impairment were associated with high depression (p < 0.05). Pain severity, pain catastrophizing, and fear of movement were associated with high anxiety and high depression (p < 0.05). Possible implications for underlying mechanisms and the need for targeted treatments are discussed.

Exposition aus Sicht niedergelassener Verhaltenstherapeutinnen und Verhaltenstherapeuten

Zusammenfassung. Theoretischer Hintergrund: Expositionsbasierte Interventionen gehören zu den wirksamsten Methoden bei der Behandlung von Angststörungen. Dennoch legen vergangene Studien nahe, dass Exposition in der verhaltenstherapeutischen Routinepraxis nur selten eingesetzt wird. Barrieren, die eine Anwendung verhindern, wurden bisher nicht systematisch erfasst. Fragestellung und Methode: Hauptziel dieser Studie war eine praxis-orientierte Erhebung systemischer Barrieren und Veränderungswünschen bei der Anwendung von Exposition aus Sicht ambulant tätiger Verhaltenstherapeutinnen und -therapeuten. Mittels postalischer Befragung wurden diese Barrieren sowie die Anwendungshäufigkeit von expositionsbasierten Interventionen erfasst (N = 684). Ergebnisse: Gemäß Selbstbericht wurde bei weniger als der Hälfte der Behandlungen von Angststörungen eine Form der Exposition eingesetzt (46.8 %), wobei die Anwendungshäufigkeit stark zwischen den Behandelnden variierte. Exposition wurde hauptsächlich in der eigenen Praxis, durchschnittlich für eine Dauer von einer Stunde und mit einer wöchentlichen bis zweiwöchentlichen Frequenz eingesetzt. Eine häufigere Anwendung war mit jüngerem Alter, weniger Berufsjahren und mehr expositionsspezifischen Aus- und Weiterbildungsstunden assoziiert. Systemische Barrieren bezogen sich besonders auf finanzielle Aspekte und das Aufwand-Vergütungsverhältnis, Unklarheiten bezüglich Versicherungs- und Abrechnungsaspekten, sowie das begrenzte Stundenkontingent. Schlussfolgerung: Exposition bei Angststörungen scheint nicht so häufig und intensiv eingesetzt zu werden, wie in aktuellen evidenzbasierten Leitlinien empfohlen wird. Diverse systemische Barrieren erschweren die Anwendung in der ambulanten Routineversorgung.

Course and predictors of DSM-5 somatic symptom disorder in patients with vertigo and dizziness symptoms - A longitudinal study

BACKGROUND

Somatic symptom disorder (SSD) is a diagnosis that was newly included in DSM-5. Currently, data on the course of SSD are largely lacking. The present study aimed to evaluate the natural course of SSD in a one-year follow-up study in patients with vertigo and dizziness (VD) symptoms.

METHODS

We investigated n=239 outpatients presenting in a tertiary care neurological setting over a one-year period. Patients had a medical examination at baseline and completed self-report questionnaires, which were re-assessed after 12months. DSM-5 SSD was assigned retrospectively. We evaluated the prevalence of SSD at baseline and 12-month follow-up and investigated predictors of the persistence of SSD during the study period.

RESULTS

The prevalence rate of SSD was 36% at baseline and 62% at 12-months follow-up. The persistence rate of SSD was 82% and the incidence rate was high, leading to a markedly increased prevalence rate at follow-up. Risk factors for persistent SSD were a self-concept of bodily weakness (OR: 1.52, 95% CI: 1.30-1.78) and an increase of depression during the study period (OR: 1.11, 95% CI: 1.02-1.22). Further, the diagnosis of an anxiety disorder (OR: 7.52, 95% CI: 1.17-48.23) or both anxiety and depressive disorder (OR: 23.14, 95% CI: 2.14-249.91) at baseline were significant predictors.

CONCLUSIONS

Our findings point out that SSD is highly prevalent in patients with VD symptoms, the incidence of the disorder widely outweighs its remission. Potential predictors of a persistence of SSD are discussed and can be chosen as a focus in therapy.

Genome-wide expression and response to exposure-based psychological therapy for anxiety disorders

Exposure-based psychological treatments for anxiety have high efficacy. However, a substantial proportion of patients do not respond to therapy. Research examining the potential biological underpinnings of therapy response is still in its infancy, and most studies have focussed on candidate genes. To our knowledge, this study represents the first investigation of genome-wide expression profiles with respect to treatment outcome. Participants (n=102) with panic disorder or specific phobia received exposure-based cognitive behavioural therapy. Treatment outcome was defined as percentage reduction from baseline in clinician-rated severity of their primary anxiety diagnosis at post treatment and 6 month follow-up. Gene expression was determined from whole blood samples at three time points using the Illumina HT-12v4 BeadChip microarray. Linear regression models tested the association between treatment outcome and changes in gene expression from pre-treatment to post treatment, and pre-treatment to follow-up. Network analysis was conducted using weighted gene co-expression network analysis, and change in the detected modules from pre-treatment to post treatment and follow-up was tested for association with treatment outcome. No changes in gene expression were significantly associated with treatment outcomes when correcting for multiple testing (q<0.05), although a small number of genes showed a suggestive association with treatment outcome (q<0.5, n=20). Network analysis showed no association between treatment outcome and change in gene expression for any module. We report suggestive evidence for the role of a small number of genes in treatment outcome. Although preliminary, these findings contribute to a growing body of research suggesting that response to psychological therapies may be associated with changes at a biological level.

Thought Field Therapy Compared to Cognitive Behavioral Therapy and Wait-List for Agoraphobia: A Randomized, Controlled Study with a 12-Month Follow-up

Background: Thought field therapy (TFT) is used for many psychiatric conditions, but its efficacy has not been sufficiently documented. Hence, there is a need for studies comparing TFT to well-established treatments. This study compares the efficacy of TFT and cognitive behavioral therapy (CBT) for patients with agoraphobia.

Methods: Seventy-two patients were randomized to CBT (N = 24), TFT (N = 24) or a wait-list condition (WLC) (N = 24) after a diagnostic procedure including the MINI PLUS that was performed before treatment or WLC. Following a 3 months waiting period, the WL patients were randomized to CBT (n = 12) or TFT (n = 12), and all patients were reassessed after treatment or waiting period and at 12 months follow-up. At first we compared the three groups CBT, TFT, and WL. After the post WL randomization, we compared CBT (N = 12 + 24 = 36) to TFT (N = 12 + 24 = 36), applying the pre-treatment scores as baseline for all patients. The primary outcome measure was a symptom score from the Anxiety Disorders Interview Scale that was performed by an interviewer blinded to the treatment condition. For statistical comparisons, we used the independent sample’s t-test, the Fisher’s exact test and the ANOVA and ANCOVA tests.

Results: Both CBT and TFT showed better results than the WLC (p < 0.001) at post-treatment. Post-treatment and at the 12-month follow-up, there were not significant differences between CBT and TFT (p = 0.33 and p = 0.90, respectively).

Conclusion: This paper reports the first study comparing TFT to CBT for any disorder. The study indicated that TFT may be an efficient treatment for patients with agoraphobia.

Trial Registration:https://clinicaltrials.gov/, identifier NCT00932919.

The moderating role of avoidance behavior on anxiety over time: Is there a difference between social anxiety disorder and specific phobia?

Theories of anxiety disorders and phobias have ascribed a critical role to avoidance behavior in explaining the persistence of fear and anxiety, but knowledge about the role of avoidance behavior in the maintenance of anxiety in social anxiety disorder relative to specific phobia is lacking. This study examined the extent to which avoidance behavior moderates the relationship between general anxiety at baseline and 18 months later in women with a diagnosed social anxiety disorder (n = 91) and women with a diagnosed specific phobia (n = 130) at baseline. Circumscribed avoidance of social and specific situations were clinician-rated using the Anxiety Disorders Interview Schedule-Lifetime (ADIS-IV-L), and general anxiety was measured using the Beck Anxiety Inventory (BAI). Moderated regression analyses revealed that (a) general anxiety at baseline predicted general anxiety at follow-up in both women with a specific phobia and women with a social anxiety disorder and (b) avoidance behavior moderated this relationship in women with a specific phobia but not in women with a social anxiety disorder. Specifically, high avoidance behavior was found to amplify the effect between general anxiety at baseline and follow-up in specific phobia. Reasons for the absence of a similar moderating effect of avoidance behavior within social anxiety disorder are discussed.

Advancing Personalized Medicine: Application of a Novel Statistical Method to Identify Treatment Moderators in the Coordinated Anxiety Learning and Management Study

There has been increasing recognition of the value of personalized medicine where the most effective treatment is selected based on individual characteristics. This study used a new method to identify a composite moderator of response to evidence-based anxiety treatment (CALM) compared to Usual Care. Eight hundred seventy-six patients diagnosed with one or multiple anxiety disorders were assigned to CALM or Usual Care. Using the method proposed by Kraemer (2013), 35 possible moderators were examined for individual effect sizes then entered into a forward-stepwise regression model predicting differential treatment response. K-fold cross validation was used to identify the number of variables to include in the final moderator. Ten variables were selected for a final composite moderator. The composite moderator effect size (r = .20) was twice as large as the strongest individual moderator effect size (r = .10). Although on average patients benefitted more from CALM, 19% of patients had equal or greater treatment response in Usual Care. The effect size for the CALM intervention increased from d = .34 to d = .54 when accounting for the moderator. Findings support the utility of composite moderators. Results were used to develop a program that allows mental health professionals to prescribe treatment for anxiety based on baseline characteristics (http://anxiety.psych.ucla.edu/treatmatch.html).

Bridging the Gaps Between Basic Science and Cognitive-Behavioral Treatments for Anxiety Disorders in Routine Care

Abstract. As a core component of cognitive-behavioral therapies (CBT), behavioral exposure is an effective treatment for anxiety disorders. Still, recent treatment studies demonstrate relatively high rates of treatment dropout, nonresponse, and relapse, indicating a substantial need for optimizing and personalizing existing treatment procedures. In the present article, we aim to address current challenges and future demands for translational research in CBT for the anxiety disorders, including (a) a better understanding of those mechanisms conferring behavioral change, (b) identifying important sources of individual variation that may act as moderators of treatment response, and (c) targeting practical barriers for dissemination of exposure therapy to routine care. Based on a recursive process model of psychotherapy research we will describe distinct steps to systematically translate basic and clinical research “from bench to bedside” to routine care, but also vice versa. Some of these aspects may stimulate the future roadmap for evidence-based psychotherapy research in order to better target the treatment of anxiety disorders as one core health challenge of our time.

Specific and common processes as mediators of the long-term effects of cognitive-behavioral therapy integrated with motivational interviewing for generalized anxiety disorder

OBJECTIVE

A trial of psychotherapy for generalized anxiety disorder (GAD) demonstrated that motivational interviewing (MI) integrated with cognitive-behavioral therapy (CBT) outperformed CBT alone on clients' worry reduction across a 12-month follow-up. In the present study, we hypothesized and tested that less client resistance and greater client-perceived therapist empathy (specific foci of MI) would account for MI's additive effect. Exploratory analyses assessed whether the common processes of homework completion and therapeutic alliance quality mediated the treatment effect.

METHOD

Clients with GAD were randomized to 15 sessions of MI-CBT (n = 42) or CBT alone (n = 43). Worry was assessed throughout treatment and follow-up. Observers rated resistance at midtreatment, and clients reported on perceived therapist empathy, alliance, and homework completion throughout treatment. Mediation was tested with bootstrapping methods.

RESULTS

Expectedly, MI-CBT clients evidenced less resistance and perceived greater therapist empathy, each of which related to lower 12-month worry. However, when both variables were tested simultaneously, only resistance remained a significant mediator of treatment. No indirect effects through homework completion or alliance emerged.

CONCLUSIONS

Reducing client resistance may be a theory-consistent mechanism through which integrative MI-CBT promotes superior long-term improvement than traditional CBT when treating GAD. Clinical or methodological significance of this article: This study further supports the long-term clinical benefit of integrating MI into CBT when treating the highly prevalent and historically difficult-to-treat condition of GAD. In particular, it points to the theory-specific mechanism of MI (helping to reduce/resolve patients' in-treatment resistance) as accounting for the integrative treatment's additive effect on worry reduction across a follow-up period. Therapists using CBT to treat patients with GAD should be trained to incorporate MI principles (e.g., empathy, collaboration, autonomy support) in general and in response to explicit markers of resistance.

Optimizing exposure-based CBT for anxiety disorders via enhanced extinction: Design and methods of a multicentre randomized clinical trial

Exposure-based psychological interventions currently represent the empirically best established first line form of cognitive-behavioural therapy for all types of anxiety disorders. Although shown to be highly effective in both randomized clinical and other studies, there are important deficits: (1) the core mechanisms of action are still under debate, (2) it is not known whether such treatments work equally well in all forms of anxiety disorders, including comorbid diagnoses like depression, (3) it is not known whether an intensified treatment with more frequent sessions in a shorter period of time provides better outcome than distributed sessions over longer time intervals. This paper reports the methods and design of a large-scale multicentre randomized clinical trial (RCT) involving up to 700 patients designed to answer these questions. Based on substantial advances in basic research we regard extinction as the putative core candidate model to explain the mechanism of action of exposure-based treatments. The RCT is flanked by four add-on projects that apply experimental neurophysiological and psychophysiological, (epi)genetic and ecological momentary assessment methods to examine extinction and its potential moderators. Beyond the focus on extinction we also involve stakeholders and routine psychotherapists in preparation for more effective dissemination into clinical practice.

Psychotherapy Technique Related to Changes in Anxiety Symptoms With a Transdiagnostic Sample

The current study examined how techniques in a psychodynamic model of therapy (Blagys and Hilsenroth, Clin Psychol Sci Pract. 7, 167-188, 2000) were related to changes in anxiety symptoms across early treatment process among a transdiagnostic sample of patients with primary anxiety disorder, subclinical anxiety disorder, and no anxiety disorder. Secondary analyses examined the use of specific psychodynamic techniques in relation to symptom change. Results revealed that therapists' use of psychodynamic-interpersonal (PI) techniques were significantly and directly related to changes in anxiety symptoms, in line with previous findings (Pitman, Slavin-Mulford, and Hilsenroth, J Nerv Ment Dis. 202, 391-396, 2014). In addition, patients with co-occurring axis I and II disorders demonstrated positive changes in anxiety symptoms regardless of level of PI technique used, whereas patients without co-occurring disorders experienced greater improvement with more PI. Implications for transdiagnostic treatment protocols for anxiety, notably Leichsenring and Salzer's (Psychotherapy 51, 224, 2104) Unified Psychodynamic Protocol for Anxiety Disorders, are discussed in relation to the current findings.

Efficacy of a Transdiagnostic internet-based treatment for emotional disorders with a specific component to address positive affect: Study protocol for a randomized controlled trial

BACKGROUND

Emotional disorders (ED) are among the most prevalent mental disorders. However, less than 50% of people suffering from ED receive the appropriate treatment. This situation has led to the development of new intervention proposals based on the transdiagnostic perspective, which tries to address the underlying processes common to ED. Most of these programs focus primarily on down-regulating negative affectivity, rather than increasing strengths and up-regulating positive affectivity. The data suggest the existence of disturbances in positive affectivity in these disorders, and so new interventions focusing on these problems are greatly needed. It is also essential to provide assistance to all the people in need. Information and Communication Technologies can be very useful. This study aims to evaluate the efficacy of a transdiagnostic Internet-based treatment for ED in a community sample. The protocol includes traditional CBT components, as well as a specific component to address positive affect. We intend to test this protocol, including this specific component or not, versus a waiting list control group. Moreover, we aim to test the differential effect of this specific component, and study the effectiveness (in terms of patients' acceptance) of using a self-applied Internet-based program. This paper presents the study protocol.

METHODS

The study is a randomized controlled trial. 207 participants will be randomly assigned to: a)Transdiagnostic Internet-based protocol (TIBP), b)Transdiagnostic Internet-based protocol + positive affect component (TIBP + PA), or c)a Waiting List control group (WL). Primary outcomes measures will be the BDI-II, the BAI, and the PANAS. Secondary outcomes will include diagnosis-specific measures of the principal disorder. Participants' treatment acceptance will also be measured. Participants will be assessed at pre-, post-treatment, and 3- and 12- month follow-ups. The data will be analyzed based on the Intention-to-treat principle. Per protocol analyses will also be performed.

DISCUSSION

To the best of our knowledge, this is the first study of a transdiagnostic Internet-based treatment for ED with a specific component to up-regulate positive affectivity. This intervention could contribute to improve the efficiency and effectiveness of current treatment programs for ED, promote the dissemination of EBTs, and help to decrease the high prevalence of ED.

TRIAL REGISTRATION

ClinicalTrial.gov: NCT02578758 . Registered 15 October 2015.

Separate and combined effects of genetic variants and pre-treatment whole blood gene expression on response to exposure-based cognitive behavioural therapy for anxiety disorders

OBJECTIVES

Exposure-based cognitive behavioural therapy (eCBT) is an effective treatment for anxiety disorders. Response varies between individuals. Gene expression integrates genetic and environmental influences. We analysed the effect of gene expression and genetic markers separately and together on treatment response.

METHODS

Adult participants (n ≤ 181) diagnosed with panic disorder or a specific phobia underwent eCBT as part of standard care. Percentage decrease in the Clinical Global Impression severity rating was assessed across treatment, and between baseline and a 6-month follow-up. Associations with treatment response were assessed using expression data from 3,233 probes, and expression profiles clustered in a data- and literature-driven manner. A total of 3,343,497 genetic variants were used to predict treatment response alone and combined in polygenic risk scores. Genotype and expression data were combined in expression quantitative trait loci (eQTL) analyses.

RESULTS

Expression levels were not associated with either treatment phenotype in any analysis. A total of 1,492 eQTLs were identified with q < 0.05, but interactions between genetic variants and treatment response did not affect expression levels significantly. Genetic variants did not significantly predict treatment response alone or in polygenic risk scores.

CONCLUSIONS

We assessed gene expression alone and alongside genetic variants. No associations with treatment outcome were identified. Future studies require larger sample sizes to discover associations.

What good are positive emotions for treatment? Trait positive emotionality predicts response to Cognitive Behavioral Therapy for anxiety

OBJECTIVE

Cognitive behavioral therapy (CBT) is empirically supported for the treatment of anxiety disorders; however, not all individuals achieve recovery following CBT. Positive emotions serve a number of functions that theoretically should facilitate response to CBT - they promote flexible patterns of information processing and assimilation of new information, encourage approach-oriented behavior, and speed physiological recovery from negative emotions. We conducted a secondary analysis of an existing clinical trial dataset to test the a priori hypothesis that individual differences in trait positive emotions would predict CBT response for anxiety.

METHOD

Participants meeting diagnostic criteria for panic disorder (n = 28) or generalized anxiety disorder (n = 31) completed 10 weekly individual CBT sessions. Trait positive emotionality was assessed at pre-treatment, and severity of anxiety symptoms and associated impairment was assessed throughout treatment.

RESULTS

Participants who reported a greater propensity to experience positive emotions at pre-treatment displayed the largest reduction in anxiety symptoms as well as fewer symptoms following treatment. Positive emotions remained a robust predictor of change in symptoms when controlling for baseline depression severity.

CONCLUSIONS

Initial evidence supports the predictive value of trait positive emotions as a prognostic indicator for CBT outcome in a GAD and PD sample.

Creating state of the art, next-generation Virtual Reality exposure therapies for anxiety disorders using consumer hardware platforms: design considerations and future directions

Decades of research and more than 20 randomized controlled trials show that Virtual Reality exposure therapy (VRET) is effective in reducing fear and anxiety. Unfortunately, few providers or patients have had access to the costly and technical equipment previously required. Recent technological advances in the form of consumer Virtual Reality (VR) systems (e.g. Oculus Rift and Samsung Gear), however, now make widespread use of VRET in clinical settings and as self-help applications possible. In this literature review, we detail the current state of VR technology and discuss important therapeutic considerations in designing self-help and clinician-led VRETs, such as platform choice, exposure progression design, inhibitory learning strategies, stimuli tailoring, gamification, virtual social learning and more. We illustrate how these therapeutic components can be incorporated and utilized in VRET applications, taking full advantage of the unique capabilities of virtual environments, and showcase some of these features by describing the development of a consumer-ready, gamified self-help VRET application for low-cost commercially available VR hardware. We also raise and discuss challenges in the planning, development, evaluation, and dissemination of VRET applications, including the need for more high-quality research. We conclude by discussing how new technology (e.g. eye-tracking) can be incorporated into future VRETs and how widespread use of VRET self-help applications will enable collection of naturalistic "Big Data" that promises to inform learning theory and behavioral therapy in general.

Changes in threat-related cognitions and experiential avoidance in group-based transdiagnostic CBT for anxiety disorders

Group-based Transdiagnostic Cognitive Behavioral Therapy (TCBT) for anxiety disorders aims to target common factors to produce beneficial effects on multiple anxiety disorders at once. While there is growing evidence that various anxiety disorders can be effectively treated by this approach, the common factors contributing to these treatment effects are not well delineated. In a sample of 48 Veterans who completed Group-based TCBT, the current study examined change in threat perception and change in experiential avoidance pre to post-treatment and as potential mediators of changes in negative affect and personalized fear ratings. Results indicated that both threat perception and experiential avoidance were significantly reduced during treatment. Additionally, reductions in both threat perception and experiential avoidance significantly predicted reductions in negative affect and fear ratings. When change in threat perception and change in experiential avoidance were examined simultaneously, both remained significant predictors of changes in negative affect though only experiential avoidance predicted changes in fear ratings. Thus, both reductions in threat perception and experiential avoidance may mediate the broad treatment effects observed in group-based TCBT. Directions for future research are discussed.

False Safety Behavior Elimination Therapy: A randomized study of a brief individual transdiagnostic treatment for anxiety disorders

In response to the ever-growing number of CBT based therapy protocols, transdiagnostic approaches to anxiety treatment, based on models of anxiety emphasizing common elements across anxiety disorders, have been increasingly explored. The aim of the current study was to test the efficacy of an individually administered, brief (5-session) transdiagnostic treatment for anxiety disorders. The current treatment (called F-SET) focuses chiefly on the elimination of anxiety maintaining behaviors and cognitive strategies (so-called "safety" aids) among individuals suffering from a range of anxiety disorders including generalized anxiety disorder (GAD), social anxiety disorder (SAD) and panic disorder (PD). Patients (N=28; mean age=28.5years; 75% female; 71% White) were randomly assigned to F-SET or waitlist control conditions. Participants were assessed prior to, immediately after, and 1-month following treatment. In addition to independent assessments of diagnostic status, standardized self-report measures and assessor ratings of severity and distress associated with anxiety symptoms were used. Participants in the F-SET condition experienced significantly less anxiety (Cohen's d=2.01) and depression (Cohen's d=2.16) than those in the WL condition. Mediational analysis showed that change in avoidance strategies mediated the group changes in anxiety symptoms. The results from the current study are an important first step in identifying a simpler, focused form of CBT that can be delivered with minimal therapist training, at a low cost and with minimal client contact time.

Transdiagnostic versus diagnosis specific cognitive behavioural therapies for anxiety: A meta-analysis

Research evaluating transdiagnostic CBT (tCBT) demonstrates its efficacy. Some evidence suggests equivalence between tCBT and diagnosis-specific CBT (dxCBT), however more investigations are necessary to clarify any difference in efficacy. This meta-analysis was conducted to compare tCBT and dxCBT, and to investigate the differential impact of comorbidity on effect sizes. Pre and post scores from primary anxiety measures in 83 treatment conditions, taken from studies primarily targeting anxiety disorders, were summarised and compared. Meta-regression analyses were then used to test the effects of comorbidity. DxCBT and tCBT meta-effects were found to be large, where g=0.951, 95% CI: 0.874-1.027, and g=1.059, 95% CI: 0.876-1.242, respectively. While statistically different (p=0.008), overlap of confidence intervals indicated a lack of clinical significance. Furthermore, no relationship between comorbidity rate and tCBT outcome was observed. These results were discussed in the context of previous findings in the transdiagnostic CBT literature.