Assessment of the construct validity of the German motor test 6-18 for 9 - To 10-year-olds

Utesch T., Strauß B., Tietjens M., Büsch D., Ghanbari M., Seidel I.

Research article (journal) | Peer reviewed

Abstract

To date a one-or a two-dimensional model (coordination/condition) for the eight items of the German Motor Test 6-18 (Bös et al., 2009) has not been confirmed. Probabilistic (mixed-Rasch modeling) and classic (confirmatory factor analysis) models are used to test whether the recommended norm-categorizations or alternative categories are empirically valid. Using a cross-validation-design, two samples of 9-to 10-year-olds (N1 = 1495, N2 = 1357; 49.2 % female) were analyzed regarding the norm-quintiles, z-normalized norm-performance-classes, and t-transformed standard scores of the empirical data (eT-categories). This study could not show the construct validity for the two norm-categorizations published. Analyses of the eT-categories yielded a one-class-solution (mixed-Rasch modeling) if two items were excluded: "stand and reach" owing to theoretical assumptions and "balancing backward" because of local model violations. Confirmatory factor analyses confirmed the factorial validity. Thus homogeneity in a one-dimensional motor scale was shown for 9-to 10-year-olds. The six homogeneous items comprise a motor-/fitness-score, which can be interpreted validly in assessments of motor ability.

Details about the publication

JournalZeitschrift für Sportpsychologie
Volume22
Issue2
Page range77-90
StatusPublished
Release year2015
Language in which the publication is writtenGerman
DOI10.1026/1612-5010/a000143
Link to the full texthttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84936797752&origin=inward
KeywordsDMT 6-18; Item-homogeneity; Mixed Rasch model; Motor scale; Motor tests

Authors from the University of Münster

Strauß, Bernd
Professorship for Sport Psychology (Prof. Strauß)