Development and validation of the Stephenson Multigroup Acculturation Scale (SMAS).

This article describes the development and psychometric evaluation of the Stephenson Multigroup Acculturation Scale (SMAS). Three studies were conducted to describe its development and refinement, examine its psychometric properties with 436 participants from 5 ethnic groups, and examine the robustness of the factor structure with a new sample. Exploratory factor analyses generated a 2-factor solution: ethnic society immersion and dominant society immersion. Item refinement resulted in a 32-item version of the SMAS. Findings indicated a robust factor structure across groups. Confirmatory factor analysis indicated that the 2-factor model provided a close approximation to the observed data. Studies indicated high reliability and validity indexes. Findings support the role of acculturation as a mediator between ethnic group affiliation and standardized assessment results.