Ted Brown1. 1. Department of Occupational Therapy, School of Primary Health and Allied Care, Faculty of Medicine, Nursing and Health Sciences, Monash University, Peninsula Campus, Build G, 4thfloor, McMahons Road, PO.O. Box 527, Frankston, Victoria, 3199, Australia. Electronic address: ted.brown@monash.edu.
Abstract
BACKGROUND: Practitioners often assess the motor skills of children presented with suspected developmental delays. It is essential that the tests used to assess children have strong measurement properties including validity. AIM: The structural validity of the Bruininks-Oseretsky Test of Motor Proficiency - second edition Brief Form (BOT-2-BF) was investigated. METHOD: 123 healthy children (67 males & 56 females; M = 10 years, 2 months; SD = 1 year, 4 months) completed the BOT-2-BF. The Rasch Measurement Model (RMM) was used to assess the 14-item BOT-2-BF's dimensionality, hierarchical ordering, differential item functioning (DIF), and item and person separation reliability. RESULTS: Nine BOT-2-BF misfit RMM requirements. A second RMM analysis of a five-item BOT-2-BF version was completed. The five-item version did meet the RMM requirements of item fit, dimensionality, hierarchical ordering, lack of DIF, and adequate item and person separation reliability. IMPLICATIONS: The 14-item version of the BOT-2-BF is not recommended for use as a screening scale to assess children's motor skill performance. However, a revised five-item version of the BOT-2-BF did appear to meet RMM expectations. Further psychometric assessment of the revised five-item version of the BOT-2-BF is recommended.
BACKGROUND: Practitioners often assess the motor skills of children presented with suspected developmental delays. It is essential that the tests used to assess children have strong measurement properties including validity. AIM: The structural validity of the Bruininks-Oseretsky Test of Motor Proficiency - second edition Brief Form (BOT-2-BF) was investigated. METHOD: 123 healthy children (67 males & 56 females; M = 10 years, 2 months; SD = 1 year, 4 months) completed the BOT-2-BF. The Rasch Measurement Model (RMM) was used to assess the 14-item BOT-2-BF's dimensionality, hierarchical ordering, differential item functioning (DIF), and item and person separation reliability. RESULTS: Nine BOT-2-BF misfit RMM requirements. A second RMM analysis of a five-item BOT-2-BF version was completed. The five-item version did meet the RMM requirements of item fit, dimensionality, hierarchical ordering, lack of DIF, and adequate item and person separation reliability. IMPLICATIONS: The 14-item version of the BOT-2-BF is not recommended for use as a screening scale to assess children's motor skill performance. However, a revised five-item version of the BOT-2-BF did appear to meet RMM expectations. Further psychometric assessment of the revised five-item version of the BOT-2-BF is recommended.
Authors: Mathieu Decock; Robin De Wilde; Ruth Van der Looven; Catharine Vander Linden Journal: Int J Environ Res Public Health Date: 2022-06-09 Impact factor: 4.614