In March 2015, the Alzheimer's Disease Research Centers (ADRCs) adopted a new neuropsychological test battery in which non-proprietary tests replaced similar instruments that had been used under licensing restrictions. Each new test is shown below, opposite the older test it replaced:
|Old test||New test|
|Mini Mental State Examination (MMSE)||Montreal Cognitive Assessment (MoCA)|
|Boston Naming Test||Multilingual Naming Test (MINT)|
|Logical Memory, Immediate and Delayed||Craft Story 21 Recall, Immediate and Delayed|
|Digit Span, Forward and Backward||Number Span, Forward and Backward|
Before implementing the new battery, NACC and the ADRCs conducted a crosswalk study, which had two aims: (1) to assess the correlation between the old and new tests; and (2) if the tests are highly correlated, to create a crosswalk between the previous tests and the new tests. The crosswalk study began in April 2014. A data element dictionary is available for reference. The protocol called for both the new and old batteries to be administered to a sample of subjects during the same clinic visit. The "matched" (within-subject) scores were then compared and equated between tests. The new tests listed above are now included in UDS 3; however, some Centers, at their discretion, are choosing to use the old battery for their follow-up visits. The scores of the neuropsychological tests are reported using Form C1 for the old tests and Form C2 for the new tests.