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Peer reviewedCook, Martha J.; And Others – Journal of Early Intervention, 1989
Eighty at-risk infants were administered the Mental and Motor Scales of the Bayley Scales of Infant Development at 6 and 12 months of age. Test-retest reliability scores of .71 on the Mental Scale and .69 on the Motor Scale were obtained. (Author/JDD)
Descriptors: Child Development, Cognitive Development, Diagnostic Tests, High Risk Persons
