Cultural Considerations in Intelligence Test Adaptations: a Critical Review of the WAIS-IV India and Its U.K. and U.S. Counterparts.

Objective: This study critically examined the adaptation and normative processes of the Wechsler Adult Intelligence Scale-Fourth Edition (WAIS-IV)India.

Method: WAIS-IV U.K. Edition Administration and Scoring Manual, WAIS-IVIndia Administration and Scoring Manual, and WAIS-IV Administration and Scoring Manual and Technical and Interpretive Manuals were used to extract test development and adaptation process data. The analyses were descriptive and qualitative.

Results: A review of the manuals showed that the normative sample were fluent English speakers with high education levels, which is not representative of India's multilingual and educational diversity. The study identified minimal cultural and linguistic adaptations in subtests, which raised concern about potential biases in the test adaptation process across cultures. The lack of clarity in item selection, demographic data, sample selection, and psychometric properties raised questions about the test's reliability and validity. Issues related to education, age, gender, and regional distribution are discussed, emphasizing the test's limitations in capturing the diverse characteristics of the heterogeneous Indian population.

Conclusions: WAIS-IV India may not adequately represent India's population. More careful consideration of socioecological and psychometric factors when adapting intelligence (IQ) tests and use of advanced data harmonization methods can provide robust cross-national statistical harmonization in the future along with more ecologically valid local test development efforts. This can allow consideration of social determinants of health and other factors that can inform a more nuanced approach to IQ test development in non-western contexts.