title: Examining rater effects of the TGMD-2 on children with intellectual disability.
abstract: The purpose of this study was to investigate rater effects on the TGMD-2 when it applied to children with intellectual disability. A total of 22 children with intellectual disabilities participated in this study. Children's performances in each of 12 subtests of the TGMD-2 were recorded via video and scored by three adapted physical activity specialists who have expertise in the TGMD-2. Two advanced measurement theories, Generalizability-theory (G-theory) and many-facet Rasch model (MFRM), were applied in data analyses. There were relatively large variances attributed to rater effects on the scores of the TGMD-2 awarded to children with intellectual disabilities. The severity of each rater significantly differed across all subtests of the TGMD-2. There was a set of biased ratings interacted with measurement conditions of the TGMD-2.
authors.affiliation: Health and Human Performance Department, Middle Tennessee State University, Murfreesboro, TN, USA.
authors.forename: Youngdeok
authors.initials: Y
authors.lastname: Kim
authors.forename: Ilhyeok
authors.initials: I
authors.lastname: Park
authors.forename: Minsoo
authors.initials: M
authors.lastname: Kang
mesh_terms: D000704:Analysis of Variance; D016009:Chi-Square Distribution; D002648:Child; D002658:Developmental Disabilities / Q000503:physiopathology* / Q000523:psychology; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000503:physiopathology* / Q000523:psychology; D008297:Male; D009043:Motor Activity; D009048:Motor Skills; D015588:Observer Variation; D011582:Psychological Theory; D011594:Psychometrics