Adaptation and Validation of a Short Acculturation Scale in a Multi-Ethnic Asian Population

The Short Acculturation Scale (SAS) has been widely used for assessing the level of the acculturation of migrants in Western countries. However, the validity of SAS for use in cosmopolitan settings without a single prevailing culture is unclear. We examined the validity and reliability of a version of the SAS adapted to a multi-ethnic Asian society. We used cross-sectional data from 12,610 Singaporean citizens and permanent residents, aged 21–75 years, of Chinese, Malay, and Indian ethnicity. Our version used 11 items, with 5 questions on language use, 3 on media use, and 3 on ethnic social relations, to measure acculturation. Our version of the SAS had good internal consistency. The three-factor CFA model had a good fit to our data. The results from the multiple group CFA supported metric invariance and partial scalar invariance across the three ethnic groups. The total score was positively correlated with generation in Singapore and the number of languages spoken. Among first generation immigrants, country of origin, but not the duration of residence was significantly associated with the acculturation score. Our three-factor version of the SAS is a reliable and valid tool for measuring acculturation in Singapore residents. These findings indicate that adapted SAS can be used to assess acculturation in multicultural settings.