Table 1.

Description of the Maine-Syracuse Longitudinal Study neuropsychological test battery: cognitive composites, included cognitive tests grouped according to factor analyses, and abilities assessed.

Cognitive domain	Tests included in domain	Cognitive ability measured
Global composite		Global composite of cognitive performance including all domains
Verbal episodic memory	Logical memory immediate recalla Logical memory delayed recalla Hopkins Verbal Learning Test	Immediate memory, verbal recall Delayed memory, verbal recall Verbal learning and memory
Visual—spatial memory and organization	Block designc Object assemblyc Visual reproductions immediate recalla Visual reproductions delayed recalla Matrix reasoningb Hooper visual organization	Visual—spatial perception, organization and construction Speed of visual—spatial organization Immediate recall, visual memory, visual—spatial problem solving Delayed recall, visual memory, visual—spatial problem solving Abstract reasoning, pattern recognition Visual—spatial organization, some demands on executive function
Scanning and tracking	Trail making Ad Trail making Bd Digit symbol substitutionc Symbol searchb	Visual scanning and tracking, concentration and attention Complex visual scanning and tracking, executive function Psychomotor performance Visual processing speed
Working memory	Digit span forwardc Digit span backwardc Letter-number sequenceb Controlled oral word associations	Attention, concentration Attention, concentration, working memory Working memory Verbal fluency, executive function
Executive function	Trail making test Bd Controlled oral word associations	Complex visual scanning and tracking, executive function Verbal fluency, executive function
Similaritiesc	—	Verbal intelligence, abstract reasoning
Mini-mental state examination	—	Global cognitive screening

^aOrigin Wechsler Memory Scale — Revised.

^bOrigin Wechsler Adult Intelligence Scale III.

^cOrigin Wechsler Adult Intelligence Scale.

^dOrigin Halstead—Reitan Neuropsychological Test Battery.