Table 1.

Maximal practice effects in the ADNI healthy control group with test-retest intervals of 6 months or 1 year

	Years	Effect size
Trails A	0.5, 1, 2	0.22–0.31
DSST	1, 2	0.19–0.20
Boston Naming Test	0.5, 1, 2, 3, 5	0.31–0.48
Rey AVLT delayed	1, 2	0.20–0.31
Logical immediate	1, 2, 3, 4, 5, 6	0.43–0.72
Logical delayed	1, 2, 3, 4, 5, 6	0.25–0.53

Abbreviations: ADNI, Alzheimer's Disease Neuroimaging Initiative; AVLT, Auditory Verbal Learning Test; DSST, Digit Symbol Substitution Test.