Evaluating construct validity and internal consistency of early childhood individualized family service plans |
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| Affiliation: | 1. Área de Ecología, Departamento de Biodiversidad y Gestión Ambiental, Facultad de Ciencias Biológicas y Ambientales, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain;2. Environmental Hydraulics Institute “IH Cantabria”, Universidad de Cantabria, Parque Científico y Tecnológico de Cantabria, C/Isabel Torres, 15, 39011 Santander, Spain;3. Museo Nacional de Ciencias Naturales (CSIC), José Gutiérrez Abascal 2, 28006 Madrid, Spain |
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| Abstract: | This study presents evidence regarding the construct validity and internal consistency of the IFSP Rating Scale (McWilliam & Jung, 2001), which was designed to rate individualized family service plans (IFSPs) on 12 indicators of family centered practice. Here, the Rasch measurement model is employed to investigate the scale's functioning and fit for both person and item diagnostics of 120 IFSPs that were previously analyzed with a classical test theory approach. Analyses demonstrated scores on the IFSP Rating Scale fit the model well, though additional items could improve the scale's reliability. Implications for applying the Rasch model to improve special education research and practice are discussed. |
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| Keywords: | Early childhood IFSP Measurement Survey research |
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