Long the standard of excellence for evaluating the development of young children, the Bayley Scales of Infant Development®Second Edition (BSIDII) offers a standardized assessment of cognitive and motor development for children ages 1 month through 42 months. BSIDII incorporates technical soundness, expanded content coverage, enhanced clinical validity, and brighter stimulus materials. It reflects current norms and allows diagnostic assessment at an earlier age to help lead to needed intervention. Normative Data BSIDII was renormed on a stratified random sample of 1,700 children (850 boys and 850 girls) ages one month to 42 months, grouped at one-month to three-month intervals on the variables of age, sex, region, race/ethnicity, and parental education.
Screening