Validity and Psychometric Properties of the Early Development Instrument in Canada, Australia, United States, and Jamaica
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There is an increasing support from international organizations and the research community for stepping beyond infant or child mortality as the most common child level social indicator and progressing towards an international measure of child development. The Early Development Instrument (EDI) is a teacher-completed measure of children’s developmental health at school entry, which to date has been used in more than a dozen countries. The EDI includes five developmental domains (Physical Health and Well-being, Social Competence, Emotional Maturity, Language and Cognitive Development and Communication Skills and General Knowledge) and 16 subdomains. This paper examines the EDI’s psychometric properties in four English-speaking countries (Canada, Australia, United States and Jamaica) by evaluating both the internal consistency and factor structures, as well as exploring the association between the EDI’s Language and Cognitive Development Domain and a direct assessment of children’s receptive vocabulary (Peabody Picture Vocabulary Test, PPVT). Overall, the factor loadings and internal consistencies of domains and subdomains were similar across the countries. The comparisons of the Language and Cognitive Development Domain with the PPVT showed high specificity and low sensitivity. The results of this paper indicate that the EDI, a measure of children’s developmental status at school entry, demonstrates similar psychometric properties in a number of countries, thus building the evidence for the instrument to be added to the limited array of internationally comparable child social indicators.
KeywordsChild development Social indicators International studies Population-level outcomes
- Altman, D. G., & Bland, J. M. (1994a). Diagnostic tests 1: Sensitivity and specificity. British Medical Journal, 308, 1552.Google Scholar
- Altman, D. G., & Bland, J. M. (1994b). Diagnostic tests 2: Predictive values. British Medical Journal, 309, 102.Google Scholar
- Andrich, D., & Styles, I. (2004). Final report on the psychometric analysis of the Early Development Instrument (EDI) using the Rasch Model: A technical paper commissioned for the development of the Australian Early Development Index (AEDI). Perth: Murdoch University.Google Scholar
- Brinkman, S., & Blackmore, S. (2003, March). Pilot study results of the Australian early development instrument: A population based measure for communities and community mobilisation tool. Paper presented at the Beyond the Rhetoric in Early Intervention Conference, Adelaide, South Australia.Google Scholar
- Doherty, G. (1997). Zero to six: The basis for school readiness. R-97-8E, Ottawa, ON: Human Resources Development Canada.Google Scholar
- Dunn, L. M., & Dunn, L. M. (1981). Peabody picture vocabulary test-revised. Manual for forms L and M. Circle Pines, Minnesota: American Guidance Service.Google Scholar
- Dunn, L. M., & Dunn, L. M. (1997). Peabody picture vocabulary test (3rd ed.). Circle Pines, Minnesota: American Guidance Service.Google Scholar
- EDStats. (2004). Summary education profiles. Retrieved February 14, 2009 from World Bank website: http://devdata.worldbank.org/edstats/cd1.asp .
- Grantham-McGregor, S. M., Walker, S. P., Chang, S. M., & Powell, C. A. (1997). Effects of early childhood supplementation with and without stimulation on later development in stunted Jamaican children. American Journal of Clinical Nutrition, 66, 247–253.Google Scholar
- Hambleton, R. K., Merenda, P. F., & Spielberger, C. D. (Eds.). (2005). Adapting educational and psychological tests for cross cultural assessment. Mahwah, New Jersey: Lawrence Erlbaum Associates, Inc.Google Scholar
- Hawes, D. J., & Dadds, M. R. (2004). Australian data and psychometric properties of the strengths and difficulties questionnaire. Australian and New Zealand Journal of Psychiatry, 40, 1345–1355.Google Scholar
- ITC (International Test Commission). (n.d.) Retrieved January 31, 2010, from http://www.intestcom.org/.
- Janus, M. (2007). The Early Development Instrument: A tool for monitoring children’s development and readiness for school. In M. E. Young & L. M. Richardson (Eds.), Early child development—from measurement to action: A priority for growth and equity (pp. 141–155). Washington, DC: World Bank.Google Scholar
- Janus, M., Brinkman, S., Duku, E., Hertzman, C., Santos, R., Sayers, M., et al. (2007a). The Early Development Instrument: A population-based measure for communities. A handbook on development, properties, and use. Hamilton, ON: Offord Centre for Child Studies.Google Scholar
- Janus, M., & Duku, E. (2007a). Normative data for the early development instrument. Hamilton, ON: Offord Centre for Child Studies.Google Scholar
- Janus, M., Duku, E., & Samms-Vaughn, M. (2007). Report on early child development in Jamaica, unpublished work.Google Scholar
- Janus, M., & Offord, D. (2007). Development and psychometric properties of the early development instrument (EDI): A measure of children’s school readiness. Canadian Journal of Behavioural Science, 39, 1–22.Google Scholar
- Jenkinson, C., Fitzpatrick, R., Norquist, J., Findley, L., & Hughes, K. (2003). Cross-cultural evaluation of the Parkinson’s Disease Questionnaire: Tests of data quality, score reliability, response rate, and scaling assumptions in the United States, Canada, Japan, Italy, and Spain. Journal of Clinical Epidemiology, 56, 843–847.CrossRefGoogle Scholar
- Meisels, S.J. (1988). Assessing readiness. Ciera Report #3-002, Ann Arbor, Michigan: Center for the Improvement of Early Reading Achievement.Google Scholar
- Muthén, B., du Toit, S.H.C., & Spisic, D. (1997). Robust inference using weighted least squares and quadratic estimating equations in latent variable modeling with categorical and continuous outcomes (unpublished manuscript).Google Scholar
- Muthén, L. K., & Muthén, B. (2008a). Mplus 5.1 for Windows. Los Angeles, CA: Author.Google Scholar
- Muthén, L. K., & Muthén, B. (2008b). Mplus user’s guide. Los Angeles, CA: Author.Google Scholar
- Sanson, A., Nicholon, J., Ungerer, J., Zubrick, S., Wilson, K., Ainley, J., et al. (2002). Introducing the longitudinal study of Australian children. Canberra: Australian Institute of Family Studies.Google Scholar
- Silburn S, Brinkman S, Ferguson-Hill S, Styles I., Walker R, Sheppard C. (2009). The Australian Early Development Index (AEDI) Indigenous Adaptation Study. Retrieved June 28, 2010, from http://www.rch.org.au/emplibrary/australianedi/AEDI_Indigenous_Adaptation_Study_Report_Nov_2009.pdf.
- Steele, R. G., Little, T. D., Ilardi, S. S., Forehand, R., Brody, G. H., & Hunter, H. L. (2006). A confirmatory comparison of the factor structure of the children’s depression inventory between European American and African American youth. Journal of Child and Family Studies, 15, 779–794.CrossRefGoogle Scholar
- Strauss, E., Sherman, E. M. S., & Spreen, O. (2006). A compendium of neuropsychological tests: Administration, norms, and commentary (3rd ed.). New York: Oxford University Press.Google Scholar
- World Bank. (2007). World Development Indicators. Retrieved February 14, 2009 from World Bank website: http://www.worldbank.org/?WEBSITE/EXTERNAL/TOPICS/EXTEDUCATION/EXTDATASTATISTICS/EXTEDSTATS/0,menuPK:3232818~pagePK:64168427~piPK:64168435~thesitePK:3232764,00.html.
- Young, M. E. (Ed.). (2007). Early child development: From measurement to action. Washington, DC: The World Bank.Google Scholar