Abstract
The convergent and discriminant validity of the Early Development Instrument (EDI), a teacher-rated assessment of children’s “school readiness”, was investigated in a multicultural sample of 267 kindergarteners (53% male). Teachers evaluations on the EDI, both overall and in five domains (physical health/well-being, social competence, emotional maturity, language/cognition, communication/general knowledge), were related to direct, child-based assessments of performance on two standardized measures of school readiness, and measures of phonological awareness and early social competence. Regression analysis indicated that together the four comparison measures accounted for 36% of variance in overall EDI scores, each making a significant and unique contribution. Results supported the convergent validity of overall EDI scores but not the discriminant validity of EDI domain scores. Moreover, correlations between EDI scores and comparison measures varied widely across teachers, suggesting considerable individual differences in teacher’s ability to evaluate school readiness relative to direct, child-based assessments, and confirming that the EDI is more appropriate for deriving inferences at higher aggregated levels such as community or region. The validation of EDI domain scores remains an important challenge in future research.
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Notes
Although a formal test administration manual was not yet available for the EDI at the time of this study, the information presented here for the instrument is based on that provided by test developers (see http://www.offordcentre.com/readiness/pubs/publications.html). For the version of the EDI used in this study, item response formats varied (Y/N, 3-point and 5-point scales) as described here. However, readers should be aware that in the current version of the EDI, item format has been modified, with 3-point, Likert scales for all items.
References
Bracken, B. C. (1998). Bracken basic concept scale-revised. San Antonio, TX: The Psychological Corporation, Harcourt Brace and Company.
Brigance, A. H. (1997). Brigance K and 1 screen, revised. North Billerica, MA: Curriculum Assoc.
Brinkman, S. A., Silburn, S., Lawrence, D., Goldfeld, S., Sayers, M., & Oberklaid, F. (2007). Investigating the validity of the Australian early development index. Early Education & Development, 18(3), 427–451.
Chambers, J., & Windschitl, P. (2004). Biases in social comparative judgments: The role of non-motivated factors in above-average and comparative-optimism effects. Psychological Bulletin, 130, 813–838.
Clancy, C. H., & Pianta, R. C. (1993). The metropolitan readiness test as a descriptor and predictor of children’s competence in kindergarten through grade two. Journal of Psychoeducational Assessment, 11(2), 144–157.
Connor, S. & Brink, B. (1999). Understanding the early years: Community impacts on child development. Human Resources Development Canada, Working paper W-99-6E. (available at http://www.sdc.gc.ca/en/cs/sp/sdc/pkrf/publications/nlscy/uey/1999-000092/page00.shtml).
Doherty, G., & Stuart, B. (1997). The association between childcare quality, ratio and staff training: A Canada-wide study. Canadian Journal of Research in Early Childhood Education, 6(2), 127–138.
Duku, E. & Janus, M. (2004). Stability and reliabilityof the early development Instrument: A popu-lation-based measure for communities (EDI). Paper presented at the annual Department of Psychiatry and Behavioural Neurosciences Research Day, McMaster University, Hamilton, ON.
Dunn, L. M., & Dunn, L. (1981). Peabody picture vocabulary test-revised. Manual for Forms L and M. Circle Pines, MN: American Guidance Service.
Ford, L. Dahinten, V. S., Merkel, C., Chong, S. L., & Moraes, S. (March, 2007). Investigating the validity of the early development instrument at the child level. Paper presentation at the annual meeting of the National Association of School Psychologists.
Forget-Dubois, N., Lemelin, J., Boivin, M., Dionne, G., Séguin, J. R., Vitaro, F., et al. (2007). Predicting early school achievement with the EDI: A longitudinal population-based study. Early Education & Development, 18(3), 405–426.
Glascoe, F. P. (1997). Technical report for the Brigance screens. Anonymous. Billlerice, MA: Curriculum Assoc.
Graue, E. (2006). The answer is readiness–now what is the question? Early Education and Development, 17, 43–56.
Guhn, M., Gadermann, A., & Zumbo, B. D. (2007a). Does the EDI measure school readiness in the same way across different groups of children? Early Education & Development, 18(3), 453–472.
Guhn, M., Janus, M., & Hertzman, C. (2007b). The early development instrument: Tranlating school readiness assessment into community actions and policy planning. Early Education & Development, 18(3), 369–374.
Heath, S., & Hogben, J. (2004). Cost-effective prediction of reading difficulties. Journal of Speech, Language and Hearing Research, 47(4), 751–766.
Herford, D. (2003). The comprehensive test of phonological processing. Mental Measurements Yearbook, 15, 226–229.
Hubley, A. M., & Zumbo, B. D. (1996). A dialectic on validity: Where we have been and where we are going. Journal of General Psychology, 123(3), 207–215.
Irwin, L., Siddiqi, A. & Hertzman, C. (2007). World Health Organization commission on the social determinants of health early childhood development: A powerful equalizer www.earlylearning.ubc.ca/globalknowledgehub/WHO_ECD_Final_Report.pdf.
Janus, M. (2006). The Early Development Instrument (EDI): The national and international perspective. Paper presented at the annual meeting of the American Educational Research Association as part of a symposium organized by Martin Guhn entitled, “Translating school readiness assessment into community actions and policy planning: The Early Development Instrument Project”. San Francisco, CA, April 2006.
Janus, M. & Offord, D. (2000). Readiness to learn at school. ISUMA, 1 (2), 71–75. (available at www.offordcentre.com/readiness/pubs/publications.html).
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), 1–22.
Janus, M., Walsh, C., Viveiros, H., & Offord, D. R. (2002). Community, neighborhood, and 5-yeaar-olds readiness to learn at school. Paper presented at the head start conference, Washington, DC.
Keating, D. P. (2007). Formative evaluations of the early development instrument: Progress and prospects. Early Education & Development, 18(3), 561–570.
Keating, D. P., & Hertzman, C. (1999). Developmental health and the wealth of nations: Social biological, and educational dynamics. New York, NY: Guilford Press.
Kershaw, P., Forer, B., Irwin, L. G., Hertzman, C., & Lapointe, V. (2007). Toward a social care program of research: A population-level study of neighborhood effects on child development. Early Education & Development, 18(3), 535–560.
Kershaw, P., Irwin, L., Trafford, K., & Hertzman, C. (2005). The British Columbia Atlas of child development (1st ed.). Victoria, British Columbia, Canada: Human Early Learning Partnership and Western Geographical Press.
Kimmel, E., & Paget, K. D. (2001). The early screening inventory. Mental Measurements Yearbook, 14, 450–453.
Konold, T. R., & Cox, R. C. (2005). Empirically-derived, person-oriented patterns of school readiness in typically-developing children: Description and prediction to first-grade achievement. Applied Developmental Science, 9(4), 174–187.
Masten, A. S., Coatsworth, J. D., Neemann, J., Gest, S. D., Tellegen, A., & Garmezy, N. (1995). The structure and coherence of competence from childhood through adolescence. Child Development, 66, 1635–1659.
McCarthy, D. (1972). McCarthy scales of children’s abilities. San Antonio, TX: Psych. Corporation.
McKnight, T., & Schwarting, G. (2004). Bracken school readiness assessment. Mental Measurements Yearbook, 16, 155–157.
Meisels, S. J. (1987). Uses and abuses of developmental screening and school readiness testing. Young Children, 42(4–6), 68–73.
Meisels, S. J. (1999). Assessing readiness. In R. C. Pianta & M. J. Cox (Eds.), The transition to kindergarten (pp. 39–66). Baltimore, MD: Paul H. Brooks.
Meisels, S. J., Marsden, D. B., Wiske, M. S., & Henderson, L. W. (1997). Early screening inventory: Revised. examiner’s manual. Ann Arbor, MI: Rebus Inc.
National Research Council and Institute of Medicine (2000). From neurons to neighbourhoods: The science of early childhood development. In: Committee on integrating the science of early childhood development, J. Schonkoff. & D.Phillips (Eds.). Washington, DC.: National Academy Press.
Nurss, J. R., & McGauvran, M. E. (1995). Metropolitan readiness tests (6th ed.). San Antonio, TX: Harcourt Brace Educational Measurement (Psychological Corporation).
Pellegrini, A. D., & Glickman, C. D. (1990). Measuring kindergartners’ social competence. Young Children, 45, 40–44.
Savage, R., & Carless, S. (2004). Predicting curriculum and test performance at age 7 from pupil background, baseline skills and phonological awareness at age 5. British Journal of Educational Psychology, 74(2), 155–171.
Sayers, M., Coutts, M., Goldfeld, S., Oberklaid, F., Brinkman, S., & Silburn, S. (2007). Building better communities for children: Community implementation and Evaluation of the Australian early development index. Early Education & Development, 18(3), 519–534.
Schneider, B. (1993). Children’s social competence in context; The contrib-utions of family school and culture. Tarrytown, NY: Pergamon Press.
Schulz, L. H., & Selman, R. L. (2000) The meaning and measurement of social competence from a developmental perspective, Working paper 153. New York: Russell Sage.
Sturner, R. A., Funk, S. G., & Green, J. A. (1984). Predicting kindergarten school performance using the McCarthy scales of children’s abilities. Journal of Pediatric Psychology, 9(4), 495–503.
Topping, K. J., Bremner, W. G., & Holmes, E. A. (2000). Social competence: The social construction of the concept. In R. Bar-On & J. D. A. Parker (Eds.), The handbook of emotional intelligence. San Francisco: Jossey-Bass.
Vernon-Feagans, L., & Blair, C. (2006). Measurement of school readiness. Early Education and Development, 17(1), 1–5.
Wagner, R. K., Torgesen, J. K., & Rashotte, C. A. (1999). Comprehensive test of phonological processing. Austin, TX: PRO-ED.
Zumbo, B. D., & Forer, B. (in press). Testing and measurement from a multilevel view: Psychometrics and validation. In J. Bovaird, K. Geisinger, & C. Buckendahl (Eds.), High stakes testing in education—science and practice in K-12 Settings [Festschrift to Barbara Plake]. Washington, DCs: American Psychological Association Press.
Acknowledgments
The authors wish to acknowledge the financial support received from the British Columbia Ministry of Education and the Human Early Learning Partnership of the University of British Columbia, Vancouver, BC, Canada. We also extend our thanks to the school districts, schools, teachers and students that participated in this research and to the graduate and undergraduate students from the University of British Columbia and Simon Fraser University who assisted in data collection and coding. Finally, we extend special thanks to Victor Glickman and Clyde Hertzman for their support, but especially for their patience.
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Hymel, S., LeMare, L. & McKee, W. The Early Development Instrument: An Examination of Convergent and Discriminant Validity. Soc Indic Res 103, 267–282 (2011). https://doi.org/10.1007/s11205-011-9845-2
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DOI: https://doi.org/10.1007/s11205-011-9845-2