Development of the Affordances in the Home Environment for Motor Development–Infant Scale


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Abstract

Background:The present study reports the development and application of the Affordances in the Home Environment for Motor Development–Infant Scale (AHEMD–IS), a parental self–report designed to assess the quantity and quality of affordances in the home environment that are conducive to motor development for infants aged 3–18 months.Methods:Steps in its development included use of expert feedback, establishment of construct validity, interrater and intrarater reliability, and predictive validity. With all phases of the project, 113 homes were involved.Results:Intraclass correlation coefficients for interrater and intrarater reliability for the total score were 1 and 0.94, respectively. In addition, results indicate that the test has the characteristic of differentiating a wide range of scores. Regression analysis for the AHEMD–IS and motor development using the Alberta Infant Motor Scale supports preliminary evidence for predictive validity.Conclusion:Our findings suggest that the AHEMD–IS has sufficient reliability and validity as an instrument for assessing affordances in the home environment, with clinical and research applications.

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