A CONCURRENT VALIDITY STUDY OF THE MISSOURI ADAPTIVE ABILITY SCALE AND THE ADAPTIVE BEHAVIOR ASSESSMENT SYSTEM, THIRD EDITION—TEACHER FORM

This study utilizes correlational data to demonstrate the construct validity of the Missouri Adaptive Ability Scale (MAAS) by comparing it to Adaptive Behavior Assessment System, Third Edition (ABAS-3) Teacher Form, a thoroughly researched and validated measure of independent living and adaptive functioning. The purpose was designed to extend research conducted to achieve construct validity of the MAAS. Twenty-six high school students with low incidence handicapping conditions (M = 17 years old) were included in this study. The ABAS-3 Teacher Form was obtained from archives and the MAAS was administered directly to the participants by the author. Pearson correlations revealed strong correlations across most MAAS/ABAS-3 combinations, supporting the concurrent validity of the MAAS. Implications, limitations, and suggestions for future research are discussed