Concurrent and Predictive Validities of the Bayley Motor Scale and the Peabody Developmental Motor Scales

Concurrent and predictive validities of the Bayley Motor Scale and the Peabody Developmental Motor Scales were examined by administering both tests to 23 full-term and 21 healthy premature infants at 12, 15, and 18 months of age. For both groups, a correlation analysis of age-equivalent scores indicated Bayley scores had good to high correlation with Peabody gross motor scores (range, r = .78 to r = .96) and unacceptable correlation with …