This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Campbell, S. K. Articles by Ramey, C. T. Search for Related Content Social Bookmarking                   What's this?

Evidence for the Need to Renorm the Bayley Scales of Infant Development Based on the Performance of a Population-based Sample of 12-month-old Infants

Earl Siegel

Carol A. Parr

Craig T. Ramey

University of North Carolina at Chapel Hill

Assessment on the Bayley Scales of Infant Development of 305 twelve-month-old infants born at full term (>2,500 grams) in rural North Carolina resulted in mean Mental Developmental Indexes (MDI's) of 114 and 109 for whites and nonwhites, respectively, and a mean Psychomotor Developmental Index (PDI) of 110 for each group. Because the sample was systematically drawn from the entire population of an eight-county region, such high scores raised the suspicion that the 1969 Bayley norms are outdated. Exploration of alternative hypotheses suggested that home testing might have positively affected sample scores, but support for the hypothesis that the Bayley norms for 12-month-olds are outdated was derived from published means for other samples of infants born in the 1970s and from recent age placement revisions of items on the Gesell Developmental Examination. A renorming of the Bayley Scales is recommended.

Topics in Early Childhood Special Education, Vol. 6, No. 2, 83-96 (1986)
DOI: 10.1177/027112148600600208


CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this?

This article has been cited by other articles:

				S. J. MEISELS Dimensions of Early Identification Journal of Early Intervention, January 1, 1991; 15(1): 26 - 35. [Abstract] [PDF]

				M. E. McLEAN, K. McCORMICK, and S. M. BAIRD Concurrent Validity of the Griffiths' Mental Development Scales with a Population of Children Under 24 Months Journal of Early Intervention, January 1, 1991; 15(4): 338 - 344. [Abstract] [PDF]

				R. D. Boyd, P. Welge, D. Sexton, and J. H. Miller Concurrent Validity of the Battelle Developmental Inventory: Relationship with the Bayley Scales in Young Children with Known or Suspected Disabilities Journal of Early Intervention, January 1, 1989; 13(1): 14 - 23. [Abstract] [PDF]

				M. J. Cook, L. Holder-Brown, L. J. Johnson, and J. L. Kilgo An Examination of the Stability of the Bayley Scales of Infant Development with High-Risk Infants Journal of Early Intervention, January 1, 1989; 13(1): 45 - 49. [Abstract] [PDF]

				D. Sexton, J. H. Miller, R. L. Scott, and C. Rogers Concurrent Validity Data for the Uzgiris and Hunt Scales and the Bayley Mental Scale: Additional Evidence on the Dunst Age Norms Journal of Early Intervention, January 1, 1988; 12(4): 368 - 375. [Abstract] [PDF]