Measurement Invariance of Two Adaptive Performance Scales Across Multiple Groups

Abstract

The purpose of this study is to examine the degree to which two adaptive performance scales, the I-ADAPT-M and the MAP, demonstrate measurement equivalence. If measurement equivalence is supported, then the scale may be used by various groups at various times because it is consistently interpreted. A simultaneous confirmatory factor analysis (SCFA) was conducted to determine the statistical robustness of each scale. Three participant groups, consisting of law enforcement agents, the general population, and students from a university in the Southeast, responded to the scales and their data were used for the analysis. The results indicate that the neither the I-ADAPT-M nor the MAP scales achieved full measurement equivalence. Mean differences among the groups for each scale were examined. Future research should focus on revising the scale items.