reliability and validity of psychometric tests

When aggregating all impaired test domains, 45% of the EPT children had more impaired domains than any term-born child (more than five domains, p < 0.001). The EPT children were more likely to perform inferiorly compared to the term-born controls across all assessments, with a wider variance and more co-occurring impairments. Altogether 20 test domains were used to illustrate the frequency of impaired test performances with a bar chart profile and to construct relationship maps of co-occurring impairments. The aim was to explore the most affected domains and to visualize their co-occurrences in relationship maps.Ī prospective cohort of 56 EPT children (35 boys) and 37 term-born controls (19 boys) were assessed at a median age of 6 years 7 months with Touwen Neurological Examination, Movement Assessment Battery for Children, 2nd edition (MABC-2), Sensory Integration and Praxis Test (SIPT), and a Developmental Neuropsychological Assessment, 2nd edition (NEPSY-II). This study investigated minor impairments in neurological, sensorimotor, and neuropsychological functioning in extremely preterm-born (EPT) children compared to term-born children. All in all, this study enriches our theoretical and practical understanding about the WISC-IV giving rise to other studies in this field. Over time, the four-factor model seems to be abandoned and its analysis oriented towards a five-factor model, in line with the CHC theory of intelligence and cognitive abilities. Despite its relative utilization in differential diagnostic and diagnostic assessment procedures, there is a strong criticism regarding its structural validity and the models on the basis of which it is explained, as well as the dominant structure emerging from WISC-IV. However, research in the field of psychometric quality of this test does not give a clear picture of its interpretive power or its contribution to diagnostic evaluation.

Data analysis revealed that the fourth edition of the Wechsler scale for children is more sophisticated in form and content, in line with the modern approaches and familiar models of intelligence and the measurement of mental abilities. For this purpose, a systematic review of the literature was carried out. This study seeks to examine the psychometric properties, namely the validity and reliability as well as the overall psychometric quality of the WISC-IV.

Reliability and validity of psychometric tests