Evaluating construct validity and internal consistency of early childhood individualized family service plans

Lee Ann Jung, Kelly D. Bradley, Shannon O. Sampson, Robin A. McWilliam, Michael D. Toland

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

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.

Original languageEnglish
Pages (from-to)10-16
Number of pages7
JournalStudies in Educational Evaluation
Volume45
DOIs
StatePublished - Jun 1 2015

Bibliographical note

Publisher Copyright:
© 2015 Elsevier Ltd.

Keywords

  • Early childhood
  • IFSP
  • Measurement
  • Survey research

ASJC Scopus subject areas

  • Education

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