The Psychometric Properties of Dynamic Occupational Therapy Cognitive Assessment for Children (DOTCA-Ch) in Attention-Deficit Hyperactivity Disorder

Autor: Ching-Han Chang, 張淨涵
Rok vydání: 2018
Druh dokumentu: 學位論文 ; thesis
Popis: 106
Purpose: Dynamic Occupational Therapy Cognitive Assessment for Children (DOTCA-Ch) provides a measure of cognitive assessment and learning potential for children ages 6-12 with special needs. It consists of 22 sub-tests in 5 cognitive areas: Orientation, Spatial Perception, Praxis, Visuomotor Construction and Thinking Operations. The purpose of the study was to examine the psychometric properties of DOTCA-Ch-Chinese Version in ADHD. This study investigated the cognitive profiles of children with ADHD by utilizing the DOTCA-Ch as well. Methods: Thirty children with ADHD (age = 106.9 ± 18.8 mo), and forty-five age-matched typical developing (TD) participants (age = 108.0 ± 21.4 mo) were recruited in this study. At pretest, both groups were assessed by DOTCA-Ch, and the ADHD group was also administered with both School Function Assessment (SFA) and Chinese Version of the Swanson, Nolan, and Pelham, Version IV Scale (SNAP-IV). The ADHD group was re-tested by DOTCA-Ch with a 2-week interval after the pre-test (post-test). The study examined the reliabilities (internal consistency, test-retest reliability, responsiveness and minimum detectable difference) and validities (concurrent validity, known-groups validity, convergent validity and discriminant validity) of DOTCA-Ch in ADHD children. We also discussed the possible cognitive deficits in ADHD by analyzing their performances on DOTCA-Ch. Results: (1) Between group differences: Comparing to the TD group, ADHD group had lower scores on the Orientation and Spatial Perception areas of the DOTCA-Ch. The results suggested their possible deficits in these two areas. (2) Reliabilities: The DOTCA-Ch has below-fair internal consistency (α = .63). All the five DOTCA-Ch areas have good test-retest reliabilities (ICC: .56 - .88) except for the Thinking Operation area (ICC = .19). For the responsiveness indices, the values of the standard error of measurement (SEMs) of the DOTCA-Ch areas range from .51 to 1.17. The minimal detectable difference (MDD) values of the areas range from 1.41 to 3.23. (3) Validities: Low correlations (r = .25, .07) were obtained between the scores of DOTCA-Ch Spatial Perception, Praxis areas and Cognitive/Behavioral Function of SFA respectively. The SNAP-IV moderately correlated with the Spatial Perception, Visuomotor Construction and Thinking Operation areas of DOTCA-Ch, and the results demonstrate moderate concurrent validities of the three DOTCA-Ch areas. The DOTCA-Ch could be used to discriminate ADHD and TD children due to its sound known-groups validity (discriminant rate = 76.7%, p = .00). Moderate correlations (r = .38 - .56) were obtained between the scores of Orientation and Praxis areas, Orientation and Visuomotor Construction areas, Orientation and Thinking Operation areas, Praxis and Visuomotor Construction areas of DOTCA-Ch. The correlations among DOTCA-Ch areas show moderate convergent validities. Conclusion: In conclusion, the DOTCA-Ch has moderate psychometric properties in ADHD children. The test has good test-retest reliability, concurrent validity, known-groups validity and convergent validity. Some responsiveness indices (e.g., MDD) could be used to interpret the real intervention effects.
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