Pain catastrophizing and worry about health in generalized anxiety disorder.

Because the diagnostic criteria of generalized anxiety disorder (GAD) are not tied to specific worry domains (worry is 'generalized'), research on the content of worry in GAD is lacking. To our knowledge, no study has addressed vulnerability for specific worry topics in GAD. The goal of the current study, a secondary analysis of data from a clinical trial, is to explore the relationship between pain catastrophizing and worry about health in a sample of 60 adults with primary GAD. All data for this study were collected at pretest, prior to randomization to experimental condition in the larger trial. The hypotheses were that (1) pain catastrophizing would be positively related to the severity of GAD, (2) the relationship between pain catastrophizing and the severity of GAD would not be explained by intolerance of uncertainty and psychological rigidity, and (3) pain catastrophizing would be greater in participants reporting worry about health compared to those not reporting worry about health. All hypotheses were confirmed, suggesting that pain catastrophizing may be a threat-specific vulnerability for health-related worry in GAD. The implications of the current findings include a better understanding of the ideographic content of worry, which could help focus treatment interventions for individuals with GAD.

The moderating and mediating role of telepresence and cognitive change in cognitive behaviour therapy delivered via videoconference.

In this study, we combined the results of two controlled trials and examined the relationships between working alliance, telepresence, cognitive change and treatment outcome. Sixty-five participants with a primary diagnosis of generalized anxiety disorder (GAD) or panic disorder with agoraphobia (PDA) received cognitive behaviour therapy delivered via videoconference. Participants completed measures of working alliance and telepresence after three psychotherapy sessions. They also completed measures of treatment outcome and dysfunctional beliefs (cognitive change) specific to PDA and GAD at pretreatment and posttreatment. Results revealed that telepresence at the fifth session moderated the relationship between the working alliance at the first and fifth sessions. As telepresence increased, its impact on the working alliance diminished. Cognitive change mediated the relationship between the working alliance at the fifth session and treatment outcome.

Reduction in Costs after Treating Comorbid Panic Disorder with Agoraphobia and Generalized Anxiety Disorder.

BACKGROUND: Panic disorder with agoraphobia (PDA) and generalized anxiety disorder (GAD) are impairing and costly disorders that are often misdiagnosed and left untreated despite multiple consultations. These disorders frequently co-occur, but little is known about the costs associated with their comorbidity and the impact of cognitive-behavioral therapy (CBT) on cost reduction. AIMS OF THE STUDY: The first objective of this study was to assess the mental health-related costs associated with the specific concomitance of PDA and GAD. The second aim was to determine whether there is a reduction in direct and indirect mental health-related costs following conventional CBT for the primary disorder only (PDA or GAD) or combined CBT adapted to the comorbidity (PDA and GAD). METHODS: A total of 123 participants with a double diagnosis of PDA and GAD participated in this study. Direct and indirect mental health-related costs were assessed and calculated from a societal perspective at the pre-test, the post-test, and the three-month, six-month and one-year follow-ups. RESULTS: At the pre-test, PDA-GAD comorbidity was found to generate a mean total cost of CADUSD 2,000.48 (SD = USD 2,069.62) per participant over a three-month period. The indirect costs were much higher than the direct costs. Both treatment modalities led to significant and similar decreases in all cost categories from the pre-test to the post-test. This reduction was maintained until the one-year follow-up. DISCUSSION: Methodological choices may have underestimated cost evaluations. Nonetheless, this study supports the cost offset effects of both conventional CBT for primary PDA or GAD and combined CBT for PDA-GAD comorbidity. IMPLICATIONS FOR HEALTHCARE PROVISION AND USE: Treatment of comorbid and costly disorders with evidence-based treatments such as CBT may lead to considerable economic benefits for society. IMPLICATIONS FOR HEALTH POLICIES: Considering the limited resources of healthcare systems, it is important to make choices that will lead to better accessibility of quality services. The application of CBT for PDA, GAD or both disorders and training mental health professionals in this therapeutic approach should be encouraged. Additionally, it would be favorable for insurance plans to reimburse employees for expenses associated with psychological treatment for anxiety disorders. IMPLICATIONS FOR FURTHER RESEARCH: In addition to symptom reduction, it would be of great pertinence to explore which factors can contribute to reducing direct and indirect mental health-related costs.

Insomnia Symptoms Following Treatment for Comorbid Panic Disorder With Agoraphobia and Generalized Anxiety Disorder.

Patients with panic disorder with agoraphobia (PDA) or generalized anxiety disorder (GAD) frequently also suffer from insomnia. However, the impact of cognitive-behavioral therapy (CBT) for anxiety disorders on insomnia has been understudied. Furthermore, comorbidity between anxiety disorders is common. Our main objective was to assess the impact of CBT for PDA or GAD on insomnia. In a quasi-experimental design, 86 participants with PDA and GAD received conventional CBT for their primary disorder or combined CBT for both disorders. Overall, CBTs had a significant impact on reducing insomnia symptoms (η = 0.58). However, among people with insomnia at pretest (67%), 33% still had an insomnia diagnosis, and the majority (63%) had clinically significant residual insomnia following treatment. In conclusion, the CBTs had a positive effect on the reduction of insomnia, but a significant proportion of participants still had insomnia problems following treatment. Clinicians should address insomnia during CBT for PDA and GAD.

Respiratory sinus arrhythmia during worry forecasts stress-related increases in psychological distress.

Respiratory sinus arrhythmia (RSA) has been conceptualized as an index of emotion regulation abilities. Although resting RSA has been associated with both concurrent and prospective affective responses to stress, the impact of RSA reactivity on emotional responses to stress is inconsistent across studies. The type of emotional stimuli used to elicit these phasic RSA responses may influence the adaptive value of RSA reactivity. We propose that RSA reactivity to a personally relevant worry-based stressor might forecast future affective responses to stress. To evaluate whether resting RSA and RSA reactivity to worry inductions predict stress-related increases in psychological distress, an academic stress model was used to prospectively examine changes in psychological distress from the well-defined low- and high-stress periods. During the low-stress period, 76 participants completed self-report mood measures and had their RSA assessed during a resting baseline, free worry period and worry catastrophizing interview. Participants completed another mood assessment during the high-stress period. Results indicated that baseline psychological distress predicted larger decreases in RSA during the worry inductions. Lower resting RSA and greater RSA suppression to the worry inductions at baseline prospectively predicted larger increases in psychological distress from the low- to high-stress period, even after accounting for the impact of baseline distress on RSA. These results provide further evidence that RSA may represent a unique index of emotion regulation abilities in times of stress.

Intolerance of uncertainty mediates the relation between generalized anxiety disorder symptoms and anger.

Previous research has shown that individuals with generalized anxiety disorder (GAD) report elevated anger compared with nonanxious individuals; however, the pathways linking GAD and anger are currently unknown. We hypothesized that negative beliefs about uncertainty, negative beliefs about worry and perfectionism dimensions mediate the relationship between GAD symptoms and anger variables. We employed multiple mediation with bootstrapping on cross-sectional data from a student sample (N = 233) to test four models assessing potential mediators of the association of GAD symptoms to inward anger expression, outward anger expression, trait anger and hostility, respectively. The belief that uncertainty has negative personal and behavioural implications uniquely mediated the association of GAD symptoms to inward anger expression (confidence interval [CI] = .0034, .1845, PM = .5444), and the belief that uncertainty is unfair and spoils everything uniquely mediated the association of GAD symptoms to outward anger expression (CI = .0052, .1936, PM = .4861) and hostility (CI = .0269, .2427, PM = .3487). Neither negative beliefs about worry nor perfectionism dimensions uniquely mediated the relation of GAD symptoms to anger constructs. We conclude that intolerance of uncertainty may help to explain the positive connection between GAD symptoms and anger, and these findings give impetus to future longitudinal investigations of the role of anger in GAD.

The role of anger in generalized anxiety disorder.

Little is known about the role of anger in the context of anxiety disorders, particularly with generalized anxiety disorder (GAD). The aim of study was to examine the relationship between specific dimensions of anger and GAD. Participants (N=381) completed a series of questionnaires, including the Generalized Anxiety Disorder Questionnaire (GAD-Q-IV; Newman et al., 2002, Behavior Therapy, 33, 215-233), the State-Trait Anger Expression Inventory (STAXI-2; Spielberger 1999, State-Trait Anger Expression Inventory-2: STAXI-2 professional manual, Odessa, FL: Psychological Assessment Resources) and the Aggression Questionnaire (AQ; Buss & Perry 1992, Journal of Personality and Social Psychology, 63, 452-459). The GAD-Q-IV identifies individuals who meet diagnostic criteria for GAD (i.e. GAD analogues) and those who do not (non-GAD). The STAXI-2 includes subscales for trait anger, externalized anger expression, internalized anger expression, externalized anger control and internalized anger control. The AQ includes subscales for physical aggression, verbal aggression, anger and hostility. The GAD-Q-IV significantly correlated with all STAXI-2 and AQ subscales (r's ranging from .10 to .46). Multivariate analyses of variance revealed that GAD analogues significantly differed from non-GAD participants on the combined STAXI-2 subscales (η2=.098); high levels of trait anger and internalized anger expression contributed the most to GAD group membership. GAD analogue participants also significantly differed from non-GAD participants on the combined AQ subscales (η2=.156); high levels of anger (affective component of aggression) and hostility contributed the most to GAD group membership. Within the GAD analogue group, the STAXI-2 and AQ subscales significantly predicted GAD symptom severity (R2=.124 and .198, respectively). Elevated levels of multiple dimensions of anger characterize individuals who meet diagnostic criteria for GAD.

Responsibility, probability, and severity of harm: An experimental investigation of cognitive factors associated with checking-related OCD.

The cognitive model of compulsive checking (Rachman, 2002) proposes that perceptions of responsibility, seriousness of harm and probability of harm interact to promote checking behaviour. We examined these factors in an ecologically valid experimental paradigm. Two groups of participants (participants with OCD who compulsively check and undergraduate controls) were assigned to a high or low responsibility condition, and then checked objects representing: (a) high seriousness of harm (stove burners), (b) low seriousness of harm (light bulbs), (c) high probability of harm (functional burners and bulbs), and (d) low probability of harm (non-functional burners and bulbs). In general, a diagnosis of OCD, as well as conditions of increased severity/likelihood of harm, and to a lesser degree, increased responsibility, led to a greater period of time spent checking. Implications for the cognitive-behavioural model of and treatment for compulsive checking are discussed.

Behavioral Experiments for Intolerance of Uncertainty: A Randomized Clinical Trial for Adults With Generalized Anxiety Disorder.

Sophisticated multicomponent treatments for adults with generalized anxiety disorder (GAD) have been developed over the past three decades. Although these comprehensive treatments have produced encouraging results, they appear to be less efficacious than treatments for other anxiety disorders. The goal of this randomized controlled trial is to test a newly developed, highly focused treatment for adults with GAD: Behavioral Experiments for Intolerance of Uncertainty. Sixty (60) participants (51 women, 9 men), with a mean age of 34.60 years (range: 19 to 67 years), were randomized to either treatment (n = 30) or wait-list control (n = 30). Treatment consisted of 12 weekly 1-hour sessions in which participants learned to use behavioral experiments to test their catastrophic beliefs about uncertainty. Assessments were conducted at pre-, mid- and postcondition, and at 6- and 12-month follow-up. The primary outcome was the severity of GAD, and secondary outcomes were worry, depression, somatic anxiety, and intolerance of uncertainty. Using growth curve modeling, we found that (1) the treatment group was superior to the wait-list group in terms of change from pre- to posttest on all outcomes; (2) the combined sample (once wait-listed participants received treatment) evidenced large and significant decreases on all outcomes; and (3) treatment gains were either maintained or increased over the 12-month follow-up period of the study. The new treatment is a promising treatment option for adults with GAD considering that it may be as efficacious as more comprehensive evidence-based psychological treatments for GAD.

A Multisite Non-Inferiority Randomized Controlled Trial of the Efficacy of Cognitive-Behavior Therapy for Generalized Anxiety Disorder Delivered by Videoconference.

Delivering psychotherapy by videoconference has been studied in a number of clinical trials, but no large controlled trial has involved generalized anxiety disorder (GAD). This multicenter randomized controlled non-inferiority trial was conducted to test if cognitive-behavior psychotherapy delivered by videoconference (VCP) is as effective as cognitive-behavior psychotherapy delivered face-to-face, using a strict margin of tolerance for non-inferiority. A total of 148 adults received a 15-session weekly manualized program. The treatment was based on the intolerance of uncertainty model of GAD. The impact of treatment was assessed using primary (GAD severity), secondary (worry, anxiety, and intolerance of uncertainty) and tertiary (general functioning) variables measured before and after treatment and at 6-month and 12-month follow-ups. Results showed that: (a) the treatment was effective; (b) VCP for GAD was statistically non-inferior to face-to-face psychotherapy on primary, secondary and tertiary measures at all assessment points; (c) change in intolerance of uncertainty significantly predicted change in the primary outcome measure over and above important clinical factors common to all psychotherapies (motivation, working alliance, perceived therapist competence, and client satisfaction). These findings support the use of VCP as a promising treatment option for adults with GAD. Clinical trial registry: ISRCTN#12662027.

The Role of Intolerance of Uncertainty and Working Alliance in the Outcome of Cognitive Behavioral Therapy for Generalized Anxiety Disorder Delivered by Videoconference: Mediation Analysis.

BACKGROUND: Previous meta-analyses have shown a significant relationship between working alliance and treatment outcome in general. Some studies have examined the relationship between working alliance and treatment outcome during telepsychotherapy, but to the best of our knowledge, no study has examined the mediating role of individual components of the working alliance. OBJECTIVE: As part of a clinical trial of cognitive behavioral therapy (CBT) for generalized anxiety disorder (GAD) delivered by videoconference (VC), the aim of this study is to examine the mediating role of intolerance of uncertainty on the relationship between the components of the working alliance and treatment outcome. METHODS: A sample of 46 adults with primary GAD received 15 sessions of CBT for GAD delivered over VC. Participants completed the measure of working alliance immediately after the fifth therapy session. The degree of change in intolerance of uncertainty (a key psychological process) was assessed from pre- to posttreatment. Treatment outcome was assessed via changes in GAD symptoms from pretreatment to the 6-month follow-up. RESULTS: The results revealed that the therapeutic bond did not predict treatment outcome (r=-0.23; P=.12). However, agreement on therapeutic goals and tasks did predict treatment outcome (r=-0.42; P=.004 and r=-0.37; P=.01, respectively). In addition, the relationship between consensus on therapeutic tasks and treatment outcome was completely mediated by changes in intolerance of uncertainty (unstandardized ß=-0.03; r2=0.12), whereas consensus relative to treatment goals had a direct impact on treatment outcome. CONCLUSIONS: These results provide a better understanding of the differential role of the components of the working alliance in telepsychotherapy as a facilitative factor for changes in key cognitive processes, leading to therapeutic change. TRIAL REGISTRATION: International Standard Randomized Controlled Trial Number (ISRCTN): 12662027; http://www.isrctn.com/ISRCTN12662027.

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.

When it's at: An examination of when cognitive change occurs during cognitive therapy for compulsive checking in obsessive-compulsive disorder.

BACKGROUND AND OBJECTIVES: The cognitive theory of compulsive checking in OCD proposes that checking behaviour is maintained by maladaptive beliefs, including those related to inflated responsibility and those related to reduced memory confidence. This study examined whether and when specific interventions (as part of a new cognitive therapy for compulsive checking) addressing these cognitive targets changed feelings of responsibility and memory confidence. METHODS: Participants were nine adults with a primary or secondary diagnosis of OCD who reported significant checking symptoms (at least one hour per day) on the Yale-Brown Obsessive-Compulsive Scale. A single-case multiple baseline design was used, after which participants received 12 sessions of cognitive therapy. From the start of the baseline period through to the 1 month post-treatment follow-up assessment session, participants completed daily monitoring of feelings of responsibility, memory confidence, and their time spent engaging in compulsive checking. RESULTS: Results revealed that feelings of responsibility significantly reduced and memory confidence significantly increased from baseline to immediately post-treatment, with very high effect sizes. Multilevel modelling revealed significant linear changes in feelings of responsibility (i.e., reductions over time) and memory confidence (i.e., increases over time) occurred following the sessions when these were addressed. Finally, we found that improvements in these over the course of the treatment significantly predicted reduced time spent checking. LIMITATIONS: The small sample size limits our ability to generalize our results. CONCLUSIONS: Results are discussed in terms of a focus on the timing of change in cognitive therapy.

Cognitive therapy for compulsive checking in obsessive-compulsive disorder: A pilot trial.

We evaluated a novel, empirically-based cognitive therapy for compulsive checking - a common form of obsessive-compulsive disorder. Twelve adults completed 12 sessions of the therapy. Significant reductions in checking-related symptoms were found pre- to post-treatment, and pre-treatment to 6-month follow-up (moderate to large effect sizes). Participants reported high treatment acceptability after the third session, which was maintained at post-treatment. This pilot trial provides preliminary support for treating compulsive checking using this novel cognitive approach.

Defining distinct negative beliefs about uncertainty: validating the factor structure of the Intolerance of Uncertainty Scale.

This study examined the factor structure of the English version of the Intolerance of Uncertainty Scale (IUS; French version: M. H. Freeston, J. Rhéaume, H. Letarte, M. J. Dugas, & R. Ladouceur, 1994; English version: K. Buhr & M. J. Dugas, 2002) using a substantially larger sample than has been used in previous studies. Nonclinical undergraduate students and adults from the community (M age = 23.74 years, SD = 6.36; 73.0% female and 27.0% male) who participated in 16 studies in the Anxiety Disorders Laboratory at Concordia University in Montreal, Canada were randomly assigned to 2 datasets. Exploratory factor analysis with the 1st sample (n = 1,230) identified 2 factors: the beliefs that "uncertainty has negative behavioral and self-referent implications" and that "uncertainty is unfair and spoils everything." This 2-factor structure provided a good fit to the data (Bentler-Bonett normed fit index = .96, comparative fit index = .97, standardized root-mean residual = .05, root-mean-square error of approximation = .07) upon confirmatory factor analysis with the 2nd sample (n = 1,221). Both factors showed similarly high correlations with pathological worry, and Factor 1 showed stronger correlations with generalized anxiety disorder analogue status, trait anxiety, somatic anxiety, and depressive symptomatology.

The intolerance of uncertainty scale for children: a psychometric evaluation.

Intolerance of uncertainty (IU) has contributed to our understanding of excessive worry and adult anxiety disorders, but there is a paucity of research on IU in child samples. This gap is due to the absence of a psychometrically sound measure of IU in youth. The present study adapted parallel child- and parent-report forms of the Intolerance of Uncertainty Scale (IUS) and examined the internal consistency, convergent validity, and classification properties of these forms in youth aged 7-17 (M = 11.6 years, SD = 2.6). Participating youth (N = 197; 100 girls, 97 boys) either met diagnostic criteria for an anxiety disorder (n = 73) or were nonreferred community participants (n = 124). The child-report form (i.e., IUS for Children, or IUSC), and to a lesser extent the parent-report form, demonstrated strong internal consistency and convergent validity, evidenced by significant associations with anxiety and worry (and reassurance-seeking in the case of the child-report form). Children diagnosed with anxiety disorders scored higher than nonreferred community youth on both forms. Receiver operating characteristic (ROC) analysis demonstrated acceptable overall utility in distinguishing the 2 groups of youth. Findings provide preliminary support for use of the IUSC for continuous measurement of children's ability to tolerate uncertainty.

Cognitive behavioural therapy and applied relaxation for generalized anxiety disorder: a time series analysis of change in worry and somatic anxiety.

The present study examined symptom change profiles in patients with generalized anxiety disorder (GAD) receiving either cognitive behavioural therapy (CBT) or applied relaxation (AR). It was hypothesized that (a) changes in worry would uniquely predict changes in somatic anxiety for most participants receiving CBT and (b) changes in somatic anxiety would uniquely predict changes in worry for most participants in the AR condition. Twenty participants (CBT n = 10; AR n = 10) completed daily ratings of worry and somatic anxiety during therapy, and multivariate time series analysis was used to assess the causal impact of each variable on the other. The hypotheses were not supported because we found no evidence of a match between individual symptom change profiles and treatment condition. Rather, a bidirectional relationship between worry and somatic anxiety was observed in 80% of participants receiving CBT and 70% of participants receiving AR. When only treatment responders were considered, 83% of participants receiving CBT and 86% of those receiving AR had such a bidirectional effect. The findings are discussed in terms of models of psychopathology that posit dynamic interactions between symptom clusters and in terms of the value of examining treatment mechanisms at the individual level.

The Cognitive Avoidance Questionnaire: validation of the English translation.

This study investigated the psychometric properties of the Cognitive Avoidance Questionnaire (CAQ; Gosselin, P., Langlois, F., Freeston, M. H., Ladouceur, R., Dugas, M. J., & Pelletier, O. (2002). Le Questionnaire d'évitement cognitif (QEC): Développement et validation auprès d'adultes et d'adolescents [The Cognitive Avoidance Questionnaire (CAQ): Development and validation among adult and adolescent samples]. Journal de Thérapie Comportementale et Cognitive, 12, 24-37) English translation. Questionnaires were administered to a sample of 456 (65.3% female; mean age=23.13 years, S.D.=5.18 years) undergraduate students at Concordia University in Montreal, Canada. The CAQ assesses five worry-related cognitive avoidance strategies, namely Thought Suppression, Thought Substitution, Distraction, Avoidance of Threatening Stimuli, and the Transformation of Images into Thoughts. The CAQ scale and subscales showed good to excellent internal consistency and good stability over a 5-week period. A confirmatory factor analysis found support for the proposed subscales, though the overall goodness-of-fit was lower than expected. Preliminary evidence of convergent and divergent validity was found with measures of worry, thought suppression, and dispositional coping styles. The relationship between the CAQ and specific dispositional coping styles, however, was dependent on the context of the situation in which the information-seeking and information-avoidant coping strategies were employed. Specifically, the CAQ was negatively correlated with vigilance in controllable situations and positively correlated with both information-avoidance in controllable situations and information-seeking in uncontrollable situations.

Health behaviors and psychological distress in women initiating BRCA1/2 genetic testing: comparison with control population.

The study objective was to compare breast cancer screening practices, lifestyle behaviors and psychological distress among 640 women initiating BRCA1/2 testing to those among 9,498 similarly-aged women from the general population. Health behaviors and psychological distress were reported in a self-administered questionnaire at pre-test genetic counseling. Regression analyses indicate that high-risk women were more frequently performing breast cancer screening and, in the case of those previously diagnosed with cancer, were more likely to be non-smokers and physically active than women from general population. However, women initiating BRCA1/2 testing were significantly more distressed than controls. Globally, high-risk women seemed to be well informed about recommendations for women who are at high risk and to have access to screening adapted to their risk level. Given their significant psychological distress, providing minimal psychosocial support to all women undergoing BRCA1/2 testing at pre-test genetic counseling is relevant.

Efficacy of cognitive-behavioral therapy for comorbid panic disorder with agoraphobia and generalized anxiety disorder.

The goal of this study was to evaluate the efficacy of cognitive-behavioral therapy for comorbid panic disorder with agoraphobia (PDA) and generalized anxiety disorder (GAD) by combining treatment strategies for both disorders. A single-case, multiple-baseline design across participants was used. Three participants with primary PDA and secondary GAD took part in the study. The efficacy of the treatment was assessed by means of a structured interview, self-administered questionnaires, and daily self-monitoring measures. After treatment, 2 of the 3 participants achieved high end-state functioning and maintained this level of functioning at 3-, 6-, and 12-month follow-ups. The third participant also improved but only reached high end-state functioning at 6-month follow-up. It therefore appears that the combined treatment is relatively effective for PDA-GAD comorbidity. Possible avenues for improving the treatment are suggested.