| Abstract: | This study investigated the concurrent validity of the Mayes Motor-Free Compilation (MMFC) using the Mental Scale of the Bayley Scales of Infant Development-Second Edition (BSID-II) as the criterion variable with 50 typically-developing preschool-aged children. The MMFC is an individually-administered instrument designed to assess the mental ability of young children with motor disabilities. The results indicated that the MMFC and BSID-II Mental Scale scores were significantly and positively correlated. In addition, 94% of the children's MMFC mental age scores fell within the confidence bands constructed around their BSID-II developmental age scores. These results lend preliminary support to the validity of the MMFC. The paper concludes with a discussion of interpretation issues as well as areas for future research. |
