An item response theory analysis of Harter's Self-Perception Profile for Children or why strong clinical scales should be distrustedEgberink, I. J. L. & Meijer, R. R., Jun-2011, In : Assessment. 18, 2, p. 201-212 12 p.
Research output: Contribution to journal › Article › Academic › peer-review
The authors investigated the psychometric properties of the subscales of the Self-Perception Profile for Children with item response theory (IRT) models using a sample of 611 children. Results from a nonparametric Mokken analysis and a parametric IRT approach for boys (n = 268) and girls (n = 343) were compared. The authors found that most scales formed weak scales and that measurement precision was relatively low and only present for latent trait values indicating low self-perception. The subscales Physical Appearance and Global Self-Worth formed one strong scale. Children seem to interpret Global Self-Worth items as if they measure Physical Appearance. Furthermore, the authors found that strong Mokken scales (such as Global Self-Worth) consisted mostly of items that repeat the same item content. They conclude that researchers should be very careful in interpreting the total scores on the different Self-Perception Profile for Children scales. Finally, implications for further research are discussed.
|Number of pages||12|
|Publication status||Published - Jun-2011|
- personality assessment, item response theory, measurement precision, graded response model, Mokken scaling, ESTEEM, ADOLESCENCE, SATISFACTION, PERSONALITY, PERFORMANCE, ADULTHOOD, SECURITY, BEHAVIOR, TRAITS, HEALTH