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Dive into the research topics where Marc Verbraak is active.

Publication


Featured researches published by Marc Verbraak.


Journal of Anxiety Disorders | 2002

The emotional Stroop: a comparison of panic disorder patients, obsessive-compulsive patients, and normal controls, in two experiments.

Mirjam Kampman; G.P.J. Keijsers; Marc Verbraak; Gérard Näring; C.A.L. Hoogduin

An emotional Stroop task with four word types (panic threat, obsessive-compulsive threat, general threat, and neutral) and two presentation conditions (supraliminal, subliminal) was used in two experiments. The first experiment involved 21 panic disorder (PD) patients and 20 normal controls; the second experiment 20 PD patients and 20 obsessive-compulsive patients. PD patients, obsessive-compulsive patients, and normal controls did not differ in Stroop interferences. In addition, there were no significant correlations between reduction of PD symptoms and differences between pre- and post-treatment Stroop response latencies.


Acta Psychiatrica Scandinavica | 2002

Addition of cognitive‐behaviour therapy for obsessive‐compulsive disorder patients non‐responding to fluoxetine

Mirjam Kampman; G.P.J. Keijsers; C.A.L. Hoogduin; Marc Verbraak

Kampman M, Keijsers GPJ, Hoogduin CAL, Verbraak MJPM. Addition of cognitive‐behaviour therapy for obsessive‐compulsive disorder patients non‐responding to fluoxetine. Acta Psychiatr Scand 2002: 106: 314–319.


Frontiers in Psychiatry | 2010

The Yale Brown Obsessive Compulsive Scale: factor structure of a large sample.

Gideon E. Anholt; Patricia van Oppen; Danielle C. Cath; Johannes H. Smit; Johan A. den Boer; Marc Verbraak; Anton J.L.M. van Balkom

The Yale Brown Obsessive-Compulsive scale (Y-BOCS) is a semi-structured interview considered to be the gold standard in the measurement of obsessive-compulsive disorder (OCD) severity, yet findings about its factorial structure are conflicting. This study aimed at comparing different models, and testing whether factorial structure differs along various sub-groups. Exploratory and confirmatory factor analyses were conducted on Y-BOCS scores of a large OCD patient group (n = 544). A three-factor structure (obsessions, compulsions, and resistance) provided the best fit for the data across different factor analytic procedures. The difference in goodness of fit between the original two factor (obsessions and compulsions) and the three-factor solutions seemed, however, very small. Since the two-factor solution is the original theory-driven structure, and the most widely used, we recommend the use of this factor.


Journal of Nervous and Mental Disease | 2010

A Randomized Controlled Trial of a Dutch Version of Systems Training for Emotional Predictability and Problem Solving for Borderline Personality Disorder

Elisabeth H. Bos; E. Bas van Wel; Martin T. Appelo; Marc Verbraak

Systems Training for Emotional Predictability and Problem Solving (STEPPS) is a group treatment for persons with borderline personality disorder (BPD) that is relatively easy to implement. We investigated the efficacy of a Dutch version of this treatment (VERS). Seventy-nine DSM-IV BPD patients were randomly assigned to STEPPS plus an adjunctive individual therapy, or to treatment as usual. Assessments took place before and after the intervention, and at a 6-month follow-up. STEPPS recipients showed a significantly greater reduction in general psychiatric and BPD-specific symptomatology than subjects assigned to treatment as usual; these differences remained significant at follow-up. STEPPS also led to greater improvement in quality of life, especially at follow-up. No differences in impulsive or parasuicidal behavior were observed. Effect sizes for the differences between the treatments were moderate to large. The results suggest that the brief STEPPS program combined with limited individual therapy can improve BPD-treatment in a number of ways.


Acta Psychiatrica Scandinavica | 2009

A randomized controlled study of paroxetine and cognitive‐behavioural therapy for late‐life panic disorder

Gert-Jan Hendriks; G.P.J. Keijsers; Mirjam Kampman; R.C. Oude Voshaar; Marc Verbraak; T.G. Broekman; C.A.L. Hoogduin

Hendriks G‐J, Keijsers GPJ, Kampman M, Oude Voshaar RC, Verbraak MJPM, Broekman TG, Hoogduin CAL. A randomized controlled study of paroxetine and cognitive‐behavioural therapy for late‐life panic disorder.


British Journal of Psychiatry | 2013

Collaborative stepped care v. care as usual for common mental disorders: 8-month, cluster randomised controlled trial.

D.B. Oosterbaan; Marc Verbraak; Berend Terluin; Adriaan W. Hoogendoorn; W.J. Peyrot; Anna Muntingh; A.J.L.M. van Balkom

BACKGROUND Thus far collaborative stepped care (CSC) studies have not incorporated self-help as a first step. AIMS To evaluate the effectiveness of CSC in the treatment of common mental disorders. METHOD An 8-month cluster randomised controlled trial comparing CSC to care as usual (CAU) (Dutch Trial Register identifier NTR1224). The CSC consisted of a stepped care approach guided by a psychiatric nurse in primary care with the addition of antidepressants dependent on the severity of the disorder, followed by cognitive-behavioural therapy in mental healthcare. RESULTS Twenty general practitioners (GPs) and 8 psychiatric nurses were randomised to provide CSC or CAU. The GPs recruited 163 patients of whom 85% completed the post-test measurements. At 4-month mid-test CSC was superior to CAU: 74.7% (n = 68) v. 50.8% (n = 31) responders (P = 0.003). At 8-month post-test and 12-month follow-up no significant differences were found as the patients in the CAU group improved as well. CONCLUSIONS Treatment within a CSC model resulted in an earlier treatment response compared with CAU.


Stress | 2014

Cognitive performance in both clinical and non-clinical burnout.

Bart G. Oosterholt; Joseph H. R. Maes; Dimitri van der Linden; Marc Verbraak; Michiel A. J. Kompier

Abstract Relatively little is known about cognitive performance in burnout. The aim of the present study was to further our knowledge on this topic by examining, in one study, cognitive performance in both clinical and non-clinical burnout while focusing on three interrelated aspects of cognitive performance, namely, self-reported cognitive problems, cognitive test performance, and subjective costs associated with cognitive test performance. To this aim, a clinical burnout patient group (n = 33), a non-clinical burnout group (n = 29), and a healthy control group (n = 30) were compared on self-reported cognitive problems, assessed by a questionnaire, as well as on cognitive test performance, assessed with a cognitive test battery measuring both executive functioning and more general cognitive processing. Self-reported fatigue, motivation, effort and demands were assessed to compare the different groups on subjective costs associated with cognitive test performance. The results indicated that the clinical burnout patients reported more cognitive problems than the individuals with non-clinical burnout, who in turn reported more cognitive problems relative to the healthy controls. Evidence for impaired cognitive test performance was only found in the clinical burnout patients. Relative to the healthy controls, these patients displayed some evidence of impaired general cognitive processing, reflected in slower reaction times, but no impaired executive functioning. However, cognitive test performance of the clinical burnout patients was related to larger reported subjective costs. In conclusion, although both the clinical and the non-clinical burnout group reported cognitive problems, evidence for a relatively mild impaired cognitive test performance and larger reported subjective cost associated with cognitive test performance was only found for the clinical burnout group.


Journal of Psychosomatic Research | 2015

Burnout and cortisol: Evidence for a lower cortisol awakening response in both clinical and non-clinical burnout

Bart G. Oosterholt; Joseph H. R. Maes; Dimitri van der Linden; Marc Verbraak; Michiel A. J. Kompier

OBJECTIVE Although the relationship between burnout and cortisol levels has been examined in previous studies, the results are mixed. By adopting a design in which we attempted to overcome important limitations of earlier research, the purpose of the present study was to improve the understanding of the biological underpinnings of burnout and to further the knowledge about the relationship between burnout and cortisol. METHODS A clinical burnout patient group (n =32), a non-clinical burnout group (n =29), and a healthy control group (n =30) were compared on burnout symptoms, physical and psychological complaints, and on cortisol levels. In order to examine a broad range of cortisol indices, including different measures of the cortisol awakening response (CAR) and several day-curve measures, salivary cortisol was collected six times a day during two consecutive non-workdays. RESULTS As expected, the clinical burnout group reported more burnout symptoms, and physical and psychological complaints than the non-clinical burnout group, which in turn reported more burnout symptoms and physical and psychological complaints than the healthy control group. With regard to cortisol levels, we found that until 30 min after awakening, the CAR of both the clinical and the non-clinical burnout group was lower compared with the healthy control group. Furthermore, there was some evidence that the decline of cortisol during the day was smaller in the non-clinical burnout group than in the healthy control group. CONCLUSION The results of the present study provide support for lowered cortisol in both clinical and non-clinical burnout.


Psychotherapy and Psychosomatics | 2011

Effectiveness of Systems Training for Emotional Predictability and Problem Solving (STEPPS) for Borderline Personality Problems in a 'Real-World' Sample: Moderation by Diagnosis or Severity?

Elisabeth H. Bos; E. Bas van Wel; Martin T. Appelo; Marc Verbraak

Background: Systems Training for Emotional Predictability and Problem Solving (STEPPS) is a group treatment for borderline personality disorder (BPD). Two prior randomized controlled trials (RCTs) have shown the efficacy of this training. In both RCTs, patients with borderline features who did not meet the DSM-IV criteria for BPD were excluded, which were many. We investigated the effectiveness of STEPPS in a sample representative of routine clinical practice and examined whether DSM-IV diagnosis and/or baseline severity were related to differential effectiveness. Methods: Patients whom their practicing clinician diagnosed with BPD were randomized to STEPPS plus adjunctive individual therapy (STEPPS, n = 84) or to treatment as usual (TAU, n = 84). Results: STEPPS recipients showed more improvement on measures of general and BPD-specific psychopathology as well as quality of life than TAU recipients, both at the end of treatment and at a 6-month follow-up. Presence of DSM-IV-diagnosed BPD was not related to differential treatment effectiveness, but dimensional measures of symptom severity were; STEPPS was superior to TAU particularly in patients with higher baseline severity scores. Conclusions: The findings show the effectiveness of STEPPS in a ‘real-world’ sample, and underscore the importance of dimensional versus categorical measures of personality disturbance.


Psychotherapy Research | 2017

Improving the efficiency of cognitive-behavioural therapy by using formal client feedback

Pauline D. Janse; Kim de Jong; Maarten K. van Dijk; G.J.M. Hutschemaekers; Marc Verbraak

Abstract Objective: Feedback from clients on their view of progress and the therapeutic relationship can improve effectiveness and efficiency of psychological treatments in general. However, what the added value is of client feedback specifically within cognitive-behavioural therapy (CBT), is not known. Therefore, the extent to which the outcome of CBT can be improved is investigated by providing feedback from clients to therapists using the Outcome Rating Scale (ORS) and Session Rating Scale (SRS). Method: Outpatients (n = 1006) of a Dutch mental health organization either participated in the “treatment as usual” (TAU) condition, or in Feedback condition of the study. Clients were invited to fill in the ORS and SRS and in the Feedback condition therapists were asked to frequently discuss client feedback. Results: Outcome on the SCL-90 was only improved specifically with mood disorders in the Feedback condition. Also, in the Feedback condition, in terms of process, the total number of required treatment sessions was on average two sessions fewer. Conclusion: Frequently asking feedback from clients using the ORS/SRS does not necessarily result in a better treatment outcome in CBT. However, for an equal treatment outcome significantly fewer sessions are needed within the Feedback condition, thus improving efficiency of CBT.

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C.A.L. Hoogduin

Radboud University Nijmegen

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G.P.J. Keijsers

Radboud University Nijmegen

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Kees Hoogduin

Radboud University Nijmegen

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Mirjam Kampman

Radboud University Nijmegen

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Bart G. Oosterholt

Radboud University Nijmegen

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C.W. Korrelboom

Radboud University Nijmegen

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Joseph H. R. Maes

Radboud University Nijmegen

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