The construct validity and reliability of the Motor Development List for the assessment of motor skills in children with profound intellectual and multiple disabilities: The next step?

Authors :: Wessels MD
Van Assen AAG
Post WJ
Van der Putten AAJ
Source :: Journal of intellectual & developmental disability [J Intellect Dev Disabil] 2023 Dec; Vol. 48 (4), pp. 370-383. Date of Electronic Publication: 2023 Mar 28.
Publication Year :: 2023
Abstract: Background: There are no psychometrically validated instruments available to measure motor skills of children with profound intellectual and multiple disabilities (PIMD). In this study, the construct validity and reliability (Rho) of the Motor Development List for children with PIMD (MDL-PIMD), a proxy-reported measure, was investigated.<br />Methods: The MDL-PIMD was filled in by parents of 52 children with PIMD every six months over a period of two years. The items of the original MDL were categorised into subscales. A Mokken scale analysis for polytomous items was conducted for five subscales (Posture, Locomotion, Reaching, Grabbing and Facial Actions).<br />Results: Several items were deleted to improve scalability. All scales showed good scalability (range scale H .66-.78) and reliability (range Rho .92-.98).<br />Conclusions: The MDL-PIMD seems to be a valid and reliable instrument for assessing the motor skills of children with PIMD, although more research is needed to confirm the factorial structure.

Subjects :: Humans
Reproducibility of Results
Male
Female
Child
Child, Preschool
Motor Skills Disorders diagnosis
Motor Skills Disorders physiopathology
Children with Disabilities
Adolescent
Disability Evaluation
Child Development physiology
Intellectual Disability
Motor Skills physiology
Psychometrics standards
Psychometrics instrumentation
Psychometrics methods

Full Text Access

Tools