| Bayley Scales of Infant Development | A psychological test used to measure the developmental progress of infants over the first two and one-half years of life; consists of three scales: mental, motor, and behaviour record. (05 Mar 2000) |
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| Bayley, Nancy | <person> U.S. Psychologist, *1899. See: Bayley Scales of Infant Development. (05 Mar 2000) |