Rutgers-Led Study Unveils New Cognitive Tests for Mandarin-Speaking Older Adults
Asian Americans represent the fastest-growing group of older adults in the U.S., frequently encountering language and cultural obstacles when seeking care for dementia-related symptoms. A Rutgers Health-led study, involving experts from the Rutgers-NYU Resource Center for Alzheimer's Disease and Research Center and Stanford Alzheimer's Disease Research Center, has proposed a solution for older adults from China and Taiwan.
Tailoring Neuropsychological Tests for Mandarin Speakers
Published in Alzheimer's & Dementia: The Journal of the Alzheimer's Association, the study designed a new suite of neuropsychological tests suitable for Mandarin-speaking older adults. Researchers developed and validated these tests by considering the non-alphabetical nature of Chinese languages, the frequency of Chinese character and word usage in daily living, and cultural exposure before immigration to the U.S.
"Direct translation of English tests for memory and thinking often fails to capture essential linguistic and cultural nuances."
William Hu, a professor of neurology at Rutgers Robert Wood Johnson Medical School and director of the Center for Healthy Aging Research, stated that direct translation of English tests for memory and thinking often fails to capture essential linguistic and cultural nuances. He noted that this leads to underdiagnosis and mistrust, especially when the instruments are recognized as poor.
The COAST Study: Validation Across Communities
The Chinese Older Adult STudy (COAST) involved 208 participants aged 60 to 90 across New Jersey, New York City, and the San Francisco Bay Area, with varying degrees of bilingualism. Researchers tested the reproducibility of the cognitive tests over six months, their equivalency to corresponding English tests, and their correspondence to known dimensions of memory and thinking.
Hu confirmed this as the first set of tests validated in older adults from China, Taiwan, and other overseas Chinese diaspora.
Promising Results and Future Integration
These new cognitive tests, which include innovative tasks for word fluency and memory, demonstrate high stability when used over time (up to six months). They correlate strongly with performance on English-based tests and show strong links to novel Alzheimer's disease blood-based biomarkers.
Researchers indicate that next steps include integrating these tests into electronic environments, such as tablets or virtual reality. This would allow for instructions to patients and recording responses without the need for a Mandarin-fluent clinician, thereby supporting more accurate cognitive assessment for underserved Mandarin-speaking patients. Validation of these tools in Cantonese and other Chinese dialects is also planned.
Opening Doors for Clinical Trials and Modern Care
"This research opens the door for greater involvement in clinical trials by older Chinese Americans who may not meet the English proficiency level necessary for standard North American neuropsychological testing."
Hu emphasized that this research opens the door for greater involvement in clinical trials by older Chinese Americans who may not meet the English proficiency level necessary for standard North American neuropsychological testing. He added that the work provides a scientifically validated pathway to accurately include and characterize this community in modern clinical care and cutting-edge research.
The study was a collaboration between Rutgers researchers, led by William Hu and including Michelle Chen and Karthik Kota, and Stanford researchers led by Vankee Lin.