Early literacy individual growth and development indicators (EL-IGDIs): Growth trajectories using a large, internet-based sample

Cary J. Roseth, Kristen N. Missall, Scott R McConnell

Research output: Contribution to journalArticle

5 Scopus citations


Early literacy individual growth and development indicators (EL-IGDIs) assess preschoolers' expressive vocabulary development and phonological awareness. This study investigated longitudinal change in EL-IGDIs using a large (N=7355), internet-based sample of 36- to 60-month-old United States preschoolers without identified risks for later achievement delays. There were three major findings. First, results identified sensitivity to longitudinal change for all three EL-IGDIs (i.e., Picture naming, Rhyming, and Alliteration). Second, results demonstrated age-related differences in growth rates between 3- and 4-year-olds, especially for Rhyming and Alliteration. Third, preliminary national norms were reported. Discussion highlights the need for research examining the sensitivity of EL-IGDIs for younger preschoolers.

Original languageEnglish (US)
Pages (from-to)483-501
Number of pages19
JournalJournal of School Psychology
Issue number4
StatePublished - Aug 1 2012



  • Curriculum-based measurement
  • Early literacy
  • Preschool

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