This correlational study was part of an experimental project study on abused and non-abused children between the ages of two months and six years. Thirty-one children were administered the Bayley Scales of Infant Development (BSID) and the McCarthy Scales of Children's Abilities (MSCA). To determine the extent of MSCA and BSID relationship, Pearson product moment correlations were calculated. The MSCA Verbal Scale and General Cognitive Index correlated significantly with the BSID Mental Scale. There was, however, only one significant correlation between the BSID Motor Scale and the MSCA Scales. Based on these data, the MSCA seems to be an appropriate follow-up measure for use in longitudinal studies in which the BSID is utilized to measure infants' cognitive functioning. (BW)