University of Twente Student Theses

Psychological well-being within eating disorder patients : Validation of the Dutch scales of psychological well-being and relations with maladaptive personality functioning.

Holthe, F.E.C. van (2018) Psychological well-being within eating disorder patients : Validation of the Dutch scales of psychological well-being and relations with maladaptive personality functioning.

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Abstract:	Although psychological well-being (PWB) has been found to be substantially impaired within eating disorder patients, the Dutch scales of PWB have not been psychometrically tested in a clinical population yet. The aim of this study was to examine the factorial validity, internal consistency, convergent validity, and incremental validity of the PWB scales. In addition, relations between PWB and maladaptive personality functioning were explored. The sample consisted of 502 patients seeking treatment at a specialized center for eating disorders. Cross-sectional data from the intake were used to test the psychometric properties of the 8/9-item per scale version. The factor structure was explored through principal component analyses with oblimin rotation, internal consistencies were obtained through Cronbach’s alpha analyses, and incremental validity was tested through multivariate linear regression analyses. Convergent validity and correlations with maladaptive personality functioning were examined through bivariate correlation tests. About two-third of the items loaded on the expected six dimensions of PWB indicating partial support of the 6-factor structure. Internal consistencies of the scales were fair to good. Correlations with other measures were significant and mostly in accordance with expectations. PWB dimensions explained 3.1% additional variance in eating pathology above and beyond psychopathological symptoms, specifically Autonomy and Self-Acceptance. Beyond this, multiple significant correlations were found between PWB dimensions and domains of maladaptive personality functioning. The construct of PWB can be measured in a fairly reliable and valid way through the Dutch PWB scales. A confirmative factor analysis is recommended to test the factor structure more extensively and to examine the instrument’s invariance between groups to interpret group differences. For the purpose of routine outcome monitoring, further research is also recommended on test-retest reliability and the scales’ capabilities to measure changes over time. Present findings supported incremental validity, but additional support may be obtained from a longitudinal study. The relationship between PWB and maladaptive personality functioning needs to examined into more depth considering the possible implications for the treatment of patients with comorbid personality disorders.
Item Type:	Essay (Master)
Faculty:	BMS: Behavioural, Management and Social Sciences
Subject:	77 psychology
Programme:	Psychology MSc (66604)
Link to this item:	https://purl.utwente.nl/essays/74827
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