Bayley Scales of Infant and Toddler Development

Development is an umbrella term that encompasses language, cognitive, and motor as well as behavioral, social–emotional, and mental health domains. Screening, the process of testing infants and children to identify those needing further evaluation, is best conducted with standardized tests, which have a known rate of detection when administered correctly. The Bayley Scales of Infant and Toddler Development is one such direct assessment developmental screening measure. This entry describes developmental screening tests and then looks at the development and revision of the Bayley Scales of Infant and Toddler Development and the components, administration, scoring, and properties of the test.

The American Academy of Pediatrics recommends that all infants and young children be formally screened for developmental delay at periodic intervals and if concerns are raised by ...