B. Schrieken
University of Amsterdam
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Publication
Featured researches published by B. Schrieken.
Journal of Consulting and Clinical Psychology | 2003
A. Lange; Deirdre Rietdijk; Milena Hudcovicova; Jean-Pierre van de Ven; B. Schrieken; Paul M. G. Emmelkamp
Online therapy offers many advantages over face-to-face therapy. Interapy includes psychoeducation, screening, effect measures, and a protocol-driven treatment via the Internet for people suffering from posttraumatic stress. The present article reports the results of a controlled trial on the Internet-driven treatment of posttraumatic stress and grief in a group of people who manifested mild to relatively severe trauma symptoms. Participants in the treatment condition (n=69) improved significantly more than participants in the waiting-list control condition (n=32) on trauma-related symptoms and general psychopathology. The effect sizes were large. On most subscales, more than 50% of the treated participants showed reliable change and clinically significant improvement, with the highest percentages being found for depression and avoidance.
Journal of Behavior Therapy and Experimental Psychiatry | 2001
A. Lange; Jean-Pierre van de Ven; B. Schrieken; Paul M. G. Emmelkamp
On-line therapy offers many advantages over face-to-face settings. Interapy includes psycho-education, screening, effect measures and protocol-driven treatment via the Internet for clients. The present paper reports the results of a controlled trial on the Interapy treatment of posttraumatic stress and grief in students, gaining course credits. The participants in the experimental condition (n = 13) improved significantly than the participants in the waiting-list control condition (n = 12), on trauma-related symptoms and general psychopathology. The effect sizes were large. Eighty percent of the treated participants showed clinically significant improvement after treatment. The possibilities for future research with Interapy, including studies into moderating variables, are discussed.
Cognitive Behaviour Therapy | 2009
Jeroen Ruwaard; B. Schrieken; Menno Schrijver; Janneke Broeksteeg; Jack Dekker; Hans Vermeulen; A. Lange
Depression is common but undertreated. Web-based self-help provides a widely accessible treatment alternative for mild to moderate depression. However, the lack of therapist guidance may limit its efficacy. The authors assess the efficacy of therapist-guided web-based cognitive behavioural treatment (web-CBT) of mild to moderate depression. Fifty-four individuals with chronic, moderate depression participated in a randomized wait-list controlled trial, with an 18-month follow-up (immediate treatment: n = 36, wait-list control: n = 18). Primary outcome measures were the Beck Depression Inventory (BDI-IA) and the Depression scale of the Symptom Checklist-90-Revised (SCL-90-R. DEP). Secondary outcome measures were the Depression Anxiety Stress Scales and the Well-Being Questionnaire. Five participants (9%) dropped out. Intention-to-treat analyses of covariance revealed that participants in the treatment condition improved significantly more than those in the wait-list control condition (.011 < p < .015). With regard to the primary measures, between-group effects (d) were 0.7 for the BDI-IA and 1.1 for the SCL-90-R DEP. Posttest SCL-90- R DEP scores indicated recovery of 49% of the participants in the treatment group compared with 6% in the control group (odds ratio = 14.5; p < .004). On average, the effects were stable up to 18 months (n = 39), although medication was a strong predictor of relapse. The results demonstrate the efficacy of web-CBT for mild to moderate depression and the importance of therapist guidance in psychological interventions.
Cognitive Behaviour Therapy | 2003
A. Lange; J.-P. van de Ven; B. Schrieken
This paper describes the theoretical background and procedures (including psycho-education, screening, treatment protocol and outcome measurement) involved in a protocol-driven internet treatment of post-traumatic stress and grief in a group of people who have suffered from mild to relatively severe trauma. The paper examines the results of 3 outcome and process studies, which were carried out initially in a student population and subsequently in the general population of highly traumatized people. In the latter study, participants in the experimental condition ( n r = r 69) improved significantly more than participants in the waiting list control condition ( n r = r 32), with respect to trauma-related symptoms and general psychopathology. The effect sizes were large. More than 50% of the participants treated showed reliable change and clinically significant improvement after treatment for avoidance and depression. Treatment proved most beneficial for participants who had suffered from intentional trauma and those who had not previously discussed the traumatic events with significant others. Content analysis of the publications indicates a remarkable increase in cognitive coping during treatment. The possibilities for future research into internet-driven treatment of post-traumatic stress symptomatology are discussed, including the proposal to study the effects of sending a final written letter to a significant other person.
PLOS ONE | 2012
Jeroen Ruwaard; A. Lange; B. Schrieken; Conor V. Dolan; Paul M. G. Emmelkamp
Context Randomized controlled trails have identified online cognitive behavioral therapy as an efficacious intervention in the management of common mental health disorders. Objective To assess the effectiveness of online CBT for different mental disorders in routine clinical practice. Design An uncontrolled before-after study, with measurements at baseline, posttest, 6-week follow-up, and 1-year follow-up. Participants & Setting 1500 adult patients (female: 67%; mean age: 40 years) with a GP referral for psychotherapy were treated at a Dutch online mental health clinic for symptoms of depression (n = 413), panic disorder (n = 139), posttraumatic stress (n = 478), or burnout (n = 470). Interventions Manualized, web-based, therapist-assisted CBT, of which the efficacy was previously demonstrated in a series of controlled trials. Standardized duration of treatment varied from 5 weeks (online CBT for Posttraumatic stress) to 16 weeks (online CBT for Depression). Main Outcome Measures Validated self-report questionnaires of specific and general psychopathology, including the Beck Depression Inventory, the Impact of Event Scale, the Panic Disorder Severity Scale-Self Report, the Oldenburg Burnout Inventory, and the Depression Anxiety Stress Scales. Results Treatment adherence was 71% (n = 1071). Study attrition was 21% at posttest, 33% at 6-week FU and 65% at 1-year FU. Mixed-model repeated measures regression identified large short-term reductions in all measures of primary symptoms (d = 1.9±0.2 to d = 1.2±0.2; P<.001), which sustained up to one year after treatment. At posttest, rates of reliable improvement and recovery were 71% and 52% in the completer sample (full sample: 55%/40%). Patient satisfaction was high. Conclusions Results suggest that online therapist-assisted CBT may be as effective in routine practice as it is in clinical trials. Although pre-treatment withdrawal and long-term outcomes require further study, results warrant continued implementation of online CBT.
Cognitive Behaviour Therapy | 2007
Jeroen Ruwaard; A. Lange; Manon Bouwman; Janneke Broeksteeg; B. Schrieken
The aim of this study was to assess the effects of a 7‐week standardized cognitive behavioural treatment of work‐related stress conducted via e‐mail. A total of 342 people applied for treatment in reaction to a newspaper article. Initial screening reduced the sample to a heterogeneous (sub)clinical group of 239 participants. Participants were assigned randomly to a waiting list condition (n = 62), or to immediate treatment (n = 177). A follow‐up was conducted 3 years after inception of the treatment. The outcome measures used were the Depression Anxiety Stress Scales (DASS‐42) and the Emotional Exhaustion scale of the Maslach Burnout Inventory – General Survey (MBI‐GS). Fifty participants (21%) dropped out. Both groups showed statistically significant improvements. Intention‐to‐treat analysis of covariance (ANCOVAs) revealed that participants in the treatment condition improved significantly more than those in the waiting control condition (0.001<p⩽0.025). In the treatment group, the effects were large to moderate (0.9 (stress)⩾d⩾0.5 (anxiety)). The between‐group effects ranged from d = 0.6 (stress) to d = 0.1 (anxiety). At follow‐up, the effects were more pronounced, but this result requires replication in view of high attrition at follow‐up. The results warrant further research on Internet‐driven standardized cognitive behavioural therapy for work‐related stress. Such research should include the direct comparison of this treatment with face‐to‐face treatment, and should address the optimal level of therapist contact in Internet‐driven treatment.
Journal of Anxiety Disorders | 2010
Jeroen Ruwaard; Janneke Broeksteeg; B. Schrieken; Paul M. G. Emmelkamp; A. Lange
BACKGROUND Internet-delivered treatment may reduce barriers to care in those unwilling or unable to access traditional forms of treatment. OBJECTIVE To assesses the efficacy of web-based therapist-assisted cognitive behavioral treatment (web-CBT) of panic symptoms. DESIGN A randomized waiting-list controlled trial with an uncontrolled three-year follow-up. PARTICIPANTS A community sample of 58 participants with chronic panic symptoms of varying severity (immediate treatment: n=27, waiting-list control: n=31). OUTCOME MEASURES The primary outcome measures were a one-week Panic Diary and the Panic Disorder Severity Scale - Self-Report (PDSS-SR); secondary measures were the Agoraphobic Cognitions Questionnaire (ACQ), the Body Sensations Questionnaire (BSQ), the Mobility Inventory - Alone subscale (MI-AAL), and the Depression Anxiety Stress Scales (DASS-42). RESULTS In the RCT, 54 participants (93%) completed posttest measurements. With regard to the primary outcome measures, intention-to-treat ANCOVAs revealed that participants in the treatment condition improved more than the participants in the waiting-list control condition (p<.03), with a pooled between-group effect size of d=.7. After three years (n=47; 81% study compliance), effects were more pronounced. CONCLUSION The results demonstrate the efficacy of therapist-assisted web-CBT in the treatment of panic symptoms.
Clinical Psychology & Psychotherapy | 2013
Jeroen Ruwaard; A. Lange; Janneke Broeksteeg; Aitziber Renteria-Agirre; B. Schrieken; Conor V. Dolan; Paul M. G. Emmelkamp
BACKGROUND Manualized cognitive-behavioural treatment (CBT) is underutilized in the treatment of bulimic symptoms. Internet-delivered treatment may reduce current barriers. OBJECTIVE This study aimed to assess the efficacy of a new online CBT of bulimic symptoms. METHOD Participants with bulimic symptoms (n = 105) were randomly allocated to online CBT, bibliotherapy or waiting list/delayed treatment condition. Data were gathered at pre-treatment, post-treatment and 1-year follow-up. OUTCOME MEASURES The primary outcome measures were the Eating Disorder Examination Questionnaire (EDE-Q) and the frequency of binge eating and purging episodes. The secondary outcome measure was the Body Attitude Test. RESULTS Dropout from Internet treatment was 26%. Intention-to-treat ANCOVAs of post-test data revealed that the EDE-Q scores and the frequency of binging and purging reduced more in the online CBT group compared with the bibliotherapy and waiting list groups (pooled between-group effect size: d = 0.9). At 1-year follow-up, improvements in the online CBT group had sustained. CONCLUSION This study identifies online CBT as a viable alternative in the treatment of bulimic symptoms.
Verhaltenstherapie | 2004
A. Lange; J.-P. van de Ven; B. Schrieken; M. Smit
‘Interapy’ Burnout: Prevention and Therapy of Burnout via the Internet Background: In recent years a lot of computer-driven self-help programs have been developed in which no client-therapist interaction whatsoever takes place. These programs have yielded varying successes. The Internet offers new possibilities, including treatment programs in which clients do interact with their therapist, without the two ever meeting face to face. The therapist responds to client input and vice versa. This is the essence of the low-threshold Interapy program for treatment of burnout (work-related stress): www.interapy.nl. In this article we describe the development of this Internet treatment, its procedures and interventions and an outcome study. Method: Randomized controlled trial (n = 133) comparing the treated group to a psycho-education only control group. Results: Significant improvements and high effect sizes on burnout symptoms, anxiety and depression were yielded in the experimental group, in comparison to the control group that received psycho-education only. Illustration: The treatment is illustrated by a case description written by the client (the fourth author) herself. Discussion: The specific elements that explain the high effect sizes of this treatment are discussed.
Directieve therapie | 2000
A. Lange; B. Schrieken; M. Blankers; J.P. van de Ven; M. Slot
SamenvattingEr bestaan geen betrouwbare instrumenten waarmee men psychose-achtige verschijnselen bij patiënten in kaart kan brengen zonder uitgebreide interviews met hen te houden. Dit vormt een lacune in onderzoek en praktijk. De auteurs beschrijven een eerste aanzet tot de constructie van een compacte Gewaarwordingenlijst (gl) die door cliënten en behandelaars kan worden ingevuld, alsook door deelnemers aan psychologisch onderzoek. De lijst meet psychose-achtige verschijnselen en is geschikt voor screening ten behoeve van deelname aan onderzoek. De gl is betrouwbaar en de convergente validiteit is redelijk tot goed. In de klinische praktijk kan de gl worden gebruikt als een indicatie voor behandelaars om psychotische symptomen uit te vragen. Normscores voor de normale bevolking en de populatie van ‘patiënten met psychosen’ zijn weergegeven. De wijze van toepassing in onderzoek en in de klinische praktijk wordt besproken aan de hand van de positieve en negatieve predictiviteit van de test. De auteurs doen aanbevelingen voor toekomstig onderzoek, opdat de lijst geschikt kan worden gemaakt voor algemeen gebruik.