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The Bayley-III is a standardized developmental assessment that evaluates the functioning of infants and young children from 1 month to 42 months of age. It is designed to identify children with developmental delays and aid in intervention planning. The test assesses multiple developmental domains, including cognitive, language (both receptive and expressive), motor (both fine and gross), as well as social emotional and adaptive behavior. The cognitive, language, and motor scales are based primarily on direct assessment, whereas the social-emotional and adaptive behavior scales are caregiver questionnaires. Scaled scores are provided for each subtest, with composite scores and percentile ranks for each overall scale. Developmental age equivalents are also provided for cognitive, language, and motor subtests. Growth scores can also be calculated to evaluate a child’s growth over time for cognitive, language, and motor subtests.
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References and Readings
Bayley, N. (1993). Bayley scales of infant and development-second edition. San Antonio, TX: The Psychological Corporation.
Bayley, N. (2006a). Bayley scales of infant and toddler development-third edition: Administration manual. San Antonio, TX: Harcourt Assessment.
Bayley, N. (2006b). Bayley scales of infant and toddler development-third edition: Technical manual. San Antonio, TX: Harcourt Assessment.
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© 2013 Springer Science+Business Media New York
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Steiner, A. (2013). Bayley Scales of Infants Development-II. In: Volkmar, F.R. (eds) Encyclopedia of Autism Spectrum Disorders. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-1698-3_284
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DOI: https://doi.org/10.1007/978-1-4419-1698-3_284
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4419-1697-6
Online ISBN: 978-1-4419-1698-3
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