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Dive into the research topics where Brigit M. van Widenfelt is active.

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Featured researches published by Brigit M. van Widenfelt.


European Child & Adolescent Psychiatry | 2003

Dutch version of the Strengths and Difficulties Questionnaire (SDQ)

Brigit M. van Widenfelt; Arnold W. Goedhart; Philip D. A. Treffers; Robert Goodman

Abstract.A Dutch translation of the Strengths and Difficulties Questionnaire (SDQ) was made. In the first wave of data collection, self-report data of 11- to 16-yearolds (N = 970) were collected on the SDQ and other measures of psychopathology. In the second wave of data collection, extended versions of the SDQ were completed by 11- to 16-year-olds (N = 268), by parents of 8- to 16-year-olds (N = 300) and by teachers of 8- to 12-year-olds (N = 208); in addition, the Child Behaviour Checklist (CBCL) was completed by the parents and the Youth Self Report (YSR) by the 11- to 16-year-olds. The results reveal that the internal consistency of the teacher SDQ is good; and the parent and self-report SDQ are generally acceptable and comparable with the internal consistencies of CBCL/YSR. The mean inter-informant product-moment correlations of the SDQ scales were satisfactory (parent-teacher 0.38; teacher-self-report 0.27; parent-self-report 0.35) and comparable with the mean inter-informant correlations of the CBCL and YSR (0.34). The inter-informant rank correlations of the impact questions were also satisfactory (mean parent-teacher 0.48; mean parent-self-report 0.24). Concurrent validity with the other measures of psychopathology used in the present study was good.


Behavior Therapy | 2010

Examining the relation between the therapeutic alliance, treatment adherence, and outcome of cognitive behavioral therapy for children with anxiety disorders.

J.M. Liber; Bryce D. McLeod; Brigit M. van Widenfelt; Arnold W. Goedhart; Adelinde J. M. van der Leeden; Elisabeth M. W. J. Utens; Philip D. A. Treffers

Little is known about the contribution of technical and relational factors to child outcomes in cognitive behavioral therapy (CBT) for children with anxiety disorders. This study investigated the association between treatment adherence, the child-therapist alliance, and child clinical outcomes in manual-guided individual- and group-based CBT for youths diagnosed with anxiety disorders. Trained observers rated tapes of therapy sessions for treatment adherence and child-therapist alliance in a sample of 52 children (aged 8 to 12) with anxiety disorders. Self-reported child anxiety was assessed at pre-, mid-, and posttreatment; parent-reported child internalizing symptoms was assessed at pre- and posttreatment. The results showed high levels of treatment adherence and child-therapist alliance in both CBT programs. Neither treatment adherence nor child-therapist alliance predicted traditional measurements of child outcomes in the present study, but a relation between alliance and outcome was found using a more precise estimation of the true pre-post differences. Implications of these findings for expanding our understanding of how treatment processes relate to child outcome in CBT for children with anxiety disorders are discussed.


Journal of Child Psychology and Psychiatry | 2008

No differences between group versus individual treatment of childhood anxiety disorders in a randomised clinical trial

J.M. Liber; Brigit M. van Widenfelt; Elisabeth M. W. J. Utens; Robert F. Ferdinand; Adelinde J. M. van der Leeden; Willemijn van Gastel; Philip D. A. Treffers

BACKGROUND The present study compares an individual versus a group format in the delivery of manualised cognitive-behavioural therapy (FRIENDS) for children with anxiety disorders. Clinically referred children (aged 8 to 12) diagnosed with Separation Anxiety Disorder (n = 52), Generalised Anxiety Disorder (n = 37), Social Phobia (n = 22) or Specific Phobia (n = 16) were randomly assigned to individual (n = 65) or group (n = 62) treatment. METHOD Analyses were conducted separately for the intent-to-treat sample and the sample of children who completed treatment. Analyses included chi-square comparisons and regression analyses with treatment format as a predictor. RESULTS Forty-eight percent of the children in the individual versus 41% in the group treatment were free of any anxiety disorder at post-treatment; 62% versus 54% were free of their primary anxiety disorder. Regression analyses showed no significant difference in outcome between individual and group treatment. CONCLUSIONS Children improved in both conditions. Choice between treatments could be based on pragmatic considerations such as therapeutic resources, referral rates, and the preference of the parents and the child.


Journal of Clinical Child and Adolescent Psychology | 2008

Parenting and parental anxiety and depression as predictors of treatment outcome for childhood anxiety disorders: has the role of fathers been underestimated?

J.M. Liber; Brigit M. van Widenfelt; Arnold W. Goedhart; Elisabeth M. W. J. Utens; Adelinde J. M. van der Leeden; Monica T. Markus; Philip D. A. Treffers

A substantial percentage of children with anxiety disorders do not respond adequately to Cognitive Behavioral Therapy (CBT). Examination of parental factors related to treatment outcome could contribute to a further understanding of treatment outcome responses. This study investigated the predictive value of paternal and maternal emotional warmth, rejection, overprotection, anxiety, and depression for CBT outcome in clinic-referred anxious children (ages 8–12). Levels of maternal emotional warmth, paternal rejection and anxiety, and depressive symptoms predicted treatment success and failure. A higher level of maternal emotional warmth was associated with a less favorable treatment outcome. Higher levels of paternal rejection, anxiety, and depressive symptoms were consistently associated with a less favorable treatment outcome.


Journal of Anxiety Disorders | 2011

School refusal and anxiety in adolescence: Non-randomized trial of a developmentally sensitive cognitive behavioral therapy

David Heyne; Floor M. Sauter; Brigit M. van Widenfelt; Robert Vermeiren; P. Michiel Westenberg

The main objectives were to evaluate efficacy and acceptability of a developmentally sensitive cognitive behavioral therapy for anxiety-based school refusal in adolescence. Twenty school-refusing adolescents meeting DSM-IV anxiety disorder criteria participated in a non-randomized trial, together with parents and school staff. Outcome was assessed at post-treatment and 2-month follow-up. Treated adolescents showed significant and maintained improvements across primary outcome variables (school attendance; school-related fear; anxiety), with medium to large effect sizes. Half of the adolescents were free of any anxiety disorder at follow-up. Additional improvements were observed across secondary outcome variables (depression; overall functioning; adolescent and parent self-efficacy). The treatment was rated as acceptable by adolescents, parents, and school staff, which may help explain the very low attrition rate. Social anxiety disorder was the most common disorder among adolescents still meeting anxiety disorder criteria at follow-up. Treatment modifications to improve efficacy for school-refusing adolescents presenting with social anxiety disorder are suggested.


Journal of Abnormal Child Psychology | 2010

The Relation of Severity and Comorbidity to Treatment Outcome with Cognitive Behavioral Therapy for Childhood Anxiety Disorders

J.M. Liber; Brigit M. van Widenfelt; Adelinde J. M. van der Leeden; Arnold W. Goedhart; Elisabeth M. W. J. Utens; Philip D. A. Treffers

The present study investigated the impact of comorbidity over and above the impact of symptom severity on treatment outcome of Cognitive Behavioral Therapy for children with anxiety disorders. Children (aged 8–12, n = 124) diagnosed with an anxiety disorder were treated with a short-term CBT protocol. Severity was assessed with a composite measure of parent-reported behavior problems. Two approaches to comorbidity were examined; “total comorbidity” which differentiated anxiety disordered children with (n = 69) or without (n = 55) a co-occurring disorder and “non-anxiety comorbidity’ which differentiated anxious children with (n = 22) or without a non-anxiety comorbid disorder (n = 102). Treatment outcome was assessed in terms of Recovery, represented by post-treatment diagnostic status, and Reliable Change, a score reflecting changes in pre- to post-treatment symptom levels. Severity contributed to the prediction of (no) Recovery and (more) Reliable Change in parent-reported internalizing and externalizing symptoms and self-reported depressive symptoms. Total and non-anxiety comorbidity added to the prediction of diagnostic recovery. Non-anxiety comorbidity added to the prediction of Reliable Change in parent reported measures by acting as a suppressor variable. Non-anxiety comorbidity operated as a strong predictor that explained all of the variance associated with severity for self-reported depressive symptoms. The results support the need for further research on mechanisms by which treatment gains in children with higher symptom severity and non-anxiety comorbidity can be achieved.


Journal of Clinical Child and Adolescent Psychology | 2002

The Dutch Childhood Anxiety Sensitivity Index: Psychometric Properties and Factor Structure

Brigit M. van Widenfelt; Bart M. Siebelink; Arnold W. Goedhart; Philip D. A. Treffers

Examined the reliability, validity, and factor structure of the Childhood Anxiety Sensitivity Index (CASI; Silverman, Fleisig, Rabian, & Peterson, 1991) in a Dutch sample. Five hundred forty-four Dutch schoolchildren between 8 and 16 years of age completed Dutch translations of the CASI; the State-Trait Anxiety Inventory for Children (Spielberger, Edwards, Lushene, Montuori, & Platzek, 1973); and the Fear Survey Schedule for Children-Revised (Ollendick, 1983). The Dutch CASI was found to have adequate internal consistency for use with children as well as adolescents. Results reveal that the CASI predicted fear beyond a measure of trait anxiety in this Dutch sample. Both exploratory and confirmatory factor analyses comparing different models were undertaken. The model with 3 first-order factors found in previous studies showed an acceptable fit in this cross-validation sample. Loadings on the 3 factors (Physical Concerns, Mental Concerns, and Publicly Observable Concerns) did not differ between children and adolescents. Results are compared with previous research on the CASI. Directions for future research are discussed.


Behavioural and Cognitive Psychotherapy | 2013

Cognitive Mediation of Cognitive-Behavioural Therapy Outcomes for Anxiety-Based School Refusal

Marija Maric; David Heyne; David P. MacKinnon; Brigit M. van Widenfelt; P. Michiel Westenberg

BACKGROUND Cognitive-behavioural therapy (CBT) has proven to be effective for anxiety-based school refusal, but it is still unknown how CBT for school refusal works, or through which mechanisms. AIMS Innovative statistical approaches for analyzing small uncontrolled samples were used to investigate the role of self-efficacy in mediating CBT outcomes for anxiety-based school refusal. METHOD Participants were 19 adolescents (12 to 17 years) who completed a manual-based cognitive-behavioural treatment. Primary outcomes (school attendance; school-related fear; anxiety) and secondary outcomes (depression; internalizing problems) were assessed at post-treatment and 2-month follow-up. RESULTS Post-treatment increases in school attendance and decreases in fear about attending school the next day were found to be mediated by self-efficacy. Mediating effects were not observed at 2-month follow-up. CONCLUSIONS These findings provide partial support for the role of self-efficacy in mediating the outcome of CBT for school refusal. They contribute to a small body of literature suggesting that cognitive change enhances CBT outcomes for young people with internalizing problems. Regarding methodology, the product of coefficient test appears to be a valuable way to study mediation in outcome studies involving small samples.


Cognitive Therapy and Research | 2011

Distorted Cognitive Processing in Youth: The Structure of Negative Cognitive Errors and Their Associations with Anxiety

Marija Maric; David Heyne; Brigit M. van Widenfelt; P. Michiel Westenberg

The Children’s Negative Cognitive Error Questionnaire (CNCEQ) is commonly used to measure four errors in young people’s thinking, but research has failed to support the factorial validity of the measure. The primary objective of the present study was to examine the factor structure of a refined and extended version of the CNCEQ. Revision of the CNCEQ involved the exclusion of items rated as contaminated, and the addition of items measuring cognitive errors closely associated with anxiety (‘threat conclusion’ and ‘underestimation of the ability to cope’). A secondary objective was to determine the relation between the negative cognitive errors and anxiety. Principal component analysis of data from 481 children and adolescents indicated five distinct negative cognitive error subscales labeled ‘underestimation of the ability to cope’, ‘personalizing without mind reading’, ‘selective abstraction’, ‘overgeneralizing’, and ‘mind reading’ which contained the new ‘threat conclusion’ items. Confirmatory factor analysis in an independent sample of 295 children and adolescents yielded further support for the five-factor solution. All cognitive errors except ‘selective abstraction’ were correlated with anxiety. Multiple regression analysis indicated that the strongest predictors of anxiety were the two subscales containing new items, namely ‘underestimation of the ability to cope’ and ‘mind reading’. The results are discussed with respect to further development of the instrument so as to advance the assessment of distorted cognitive processing in young people with internalizing symptoms.


Clinical Child and Family Psychology Review | 2013

Developmentally Sensitive Cognitive Behavioral Therapy for Adolescent School Refusal: Rationale and Case Illustration

David Heyne; Floor M. Sauter; Thomas H. Ollendick; Brigit M. van Widenfelt; P. Michiel Westenberg

School refusal can be difficult to treat and the poorest treatment response is observed among older school refusers. This poor response may be explained, in part, by the impact of developmental transitions and tasks upon the young person, their family, and the treatment process. This paper describes and illustrates the @school program, a cognitive behavioral therapy (CBT) designed to promote developmental sensitivity when planning and delivering treatment for adolescent school refusal. Treatment is modularized and it incorporates progress reviews, fostering a planned yet flexible approach to CBT. The treatment is illustrated in the case of Allison, a 16-year-old female presenting with major depressive disorder and generalized anxiety disorder. A case formulation guided the selection, sequencing, and pacing of modules targeting predisposing, precipitating, perpetuating, and protective factors. Treatment comprised 16 sessions with Allison (interventions addressing depression, anxiety, and school attendance) and 15 concurrent sessions with her mother (strategies to facilitate an adolescent’s school attendance), including two sessions with Allison and mother together (family communication and problem solving to reduce parent–adolescent conflict). Two treatment-related consultations were also conducted with Allison’s homeroom teacher. Allison’s school attendance improved during the course of treatment. By post-treatment, there was a decrease in internalizing behavior, an increase in self-efficacy, and remission of depressive disorder and anxiety disorder. Clinically significant treatment gains were maintained at 2-month follow-up. Factors influencing outcome may include those inherent to the @school program together with less specific factors. Special consideration is given to parents’ use of both authoritative and autonomy-granting approaches when helping an adolescent to attend school.

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Philip D. A. Treffers

Leiden University Medical Center

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J.M. Liber

Leiden University Medical Center

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Marija Maric

University of Amsterdam

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Bart M. Siebelink

Leiden University Medical Center

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