TABLE 2.

Cognitive Composites

Composite	Cognitive tests
Executive function
Complex processing speed	COWAT, Trail Making Test A and B, Symbol Digit Modalities Test
Working memory	WAIS-R Digit Span backwards and Ascending Digit Span
General memory	CERAD list-learning, delay and recognition; WMS-R Logical Memory I and II; CERAD praxis delayed
Language	CERAD category fluency (animal naming) and 15-item Boston Naming Test
Visual-constructional skills	CERAD visual constructional praxis copy, BVRT (total correct), BVRT (total errors)

BVRT = Benton Visual Retention Test; CERAD = Consortium to Establish a Registry in Alzheimer’s Disease; COWAT = Controlled Oral Word Association Test; WAIS-R = Wechsler Adult Intelligence Scale–Revised; WMS-R= Wechsler Memory Scale–Revised