Bayley Scales of Infant and Toddler Development
Published Online: 30 JAN 2010
Copyright © 2010 John Wiley & Sons, Inc. All rights reserved.
Corsini Encyclopedia of Psychology
How to Cite
Robertson, G. J. 2010. Bayley Scales of Infant and Toddler Development. Corsini Encyclopedia of Psychology. 1–2.
- Published Online: 30 JAN 2010
The Bayley Scales are carefully constructed norm-referenced measures for assessing the development of infants and toddlers, ages 1 month to 3 years 6 months. Originally developed by Dr. Nancy Bayley and published in 1969, the Second Edition of the Bayley Scales (BSID-II) was published in 1993, and a third edition (Bayley-III) was released in 2006. The description that follows focuses on the Bayley-III, developed by the staff of the Psychological Corporation with advice from a panel of outside experts, consultants, and reviewers. The administration manual states that Bayley-III “maintains the original nature and purpose of the Bayley Scales as envisioned by its author, Nancy Bayley” (Bayley, 2006a, p.1).
- infant development;
- developmental assessment;
- cognitive assessment;
- motor assessment;
- language assessment;
- social-emotional assessment;
- adaptive behavior assessment