COMPARISON OF VINELAND ADAPTIVE-BEHAVIOR SCALES SURVEY FORM AGE EQUIVALENT AND STANDARD SCORE WITH THE BAYLEY MENTAL-DEVELOPMENT INDEX

The Vineland Adaptive Behavior Scales-Survey Form standard score, Vine land Adaptive Behavior Scales-Survey Form age equivalent and Bayley sc ales' Mental Development Index were given to 44 high-risk infants age 12 mo. and suspected of developmental delay. The VABS-Survey Form, a r evision of the Vineland Social Maturity Scale is frequently used in as sessment of developmental delay; however, questions have arisen as to whether the standard score or age equivalent is the better measure. A developmental quotient based on VABS-SF age equivalent and VABS-SF sta ndard score was compared with the Bayley Mental Development Index. The mean VABS-SF standard score was significantly higher than the age equ ivalent quotient and the Bayley Mental Development Index. Implications for the use of VABS-SF age equivalent in evaluating such infants are discussed.