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Japanese-English language equivalence of the Cognitive Abilities Screening Instrument among Japanese-Americans


Gibbons, Laura E., McCurry, Susan, Rhoads, Kristoffer, Masaki, Kamal, White, Lon, Borenstein, Amy R., Larson, Eric B., Crane, Paul K.


International Psychogeriatrics / IPA, Volume: 21, No.: 1, Pages.: 129-137

Year of Publication



Background: The Cognitive Abilities Screening Instrument (CASI) was designed for use in cross-cultural studies of Japanese and Japanese-American elderly in Japan and the U.S.A. The measurement equivalence in Japanese and English had not been confirmed in prior studies.; Methods: We analyzed the 40 CASI items for differential item functioning (DIF) related to test language, as well as self-reported proficiency with written Japanese, age, and educational attainment in two large epidemiologic studies of Japanese-American elderly: the Kame Project (n=1708) and the Honolulu-Asia Aging Study (HAAS; n = 3148). DIF was present if the demographic groups differed in the probability of success on an item, after controlling for their underlying cognitive functioning ability.; Results: While seven CASI items had DIF related to language of testing in Kame (registration of one item; recall of one item; similes; judgment; repeating a phrase; reading and performing a command; and following a three-step instruction), the impact of DIF on participants’ scores was minimal. Mean scores for Japanese and English speakers in Kame changed by <0.1 SD after accounting for DIF related to test language. In HAAS, insufficient numbers of participants were tested in Japanese to assess DIF related to test language. In both studies, DIF related to written Japanese proficiency, age, and educational attainment had minimal impact.; Conclusions: To the extent that DIF could be assessed, the CASI appeared to meet the goal of measuring cognitive function equivalently in Japanese and English. Stratified data collection would be needed to confirm this conclusion. DIF assessment should be used in other studies with multiple language groups to confirm that measures function equivalently or, if not, form scores that account for DIF.;

Bibtex Citation

@article{Gibbons_2008, doi = {10.1017/s1041610208007862}, url = {}, year = 2008, month = {oct}, publisher = {Cambridge University Press ({CUP})}, volume = {21}, number = {01}, pages = {129}, author = {Laura E. Gibbons and Susan McCurry and Kristoffer Rhoads and Kamal Masaki and Lon White and Amy R. Borenstein and Eric B. Larson and Paul K. Crane}, title = {Japanese{textendash}English language equivalence of the Cognitive Abilities Screening Instrument among Japanese-Americans}, journal = {{IPG}} }


age factors, aged, aged, 80 and over, aptitude, asian americans, cognition disorders, dementia, diagnosis, educational status, epidemiology, ethnology, female, humans, japan, male, mass screening, multilingualism, neuropsychological tests, psychology, psychometrics, reproducibility of results, sex factors, statistics & numerical data, united states

Countries of Study


Types of Study


Type of Interventions

Diagnostic Target Identification

Diagnostic Targets

Cognition testing (inc. task driven tests such as clock drawing)