Table 4.

Associations between Modified Wisconsin Card Sorting Test (M-WCST) conditional error probabilities and extended CERAD-NAB subtest scores.

		Spearman Correlation Coefficients (rs) for Perseveration Errors		Difference in Correlation Coefficients (z) Δ
		Requested Response
	n	Repetition	Alternation
CERAD-NAB (core)
Animal fluency	108	−0.34 *	−0.40 *	0.63
Abbreviated Boston Naming Test	109	−0.32 *	−0.09	−2.30 *
Word list learning	112	−0.34 *	−0.29 *	−0.61
Word list recall	112	−0.34 *	−0.29 *	−0.54
Word list intrusions	112	0.19 *	0.23 *	−0.39
Word list savings	110	−0.24 *	−0.22 *	−0.23
Word list discriminability	112	−0.22 *	−0.14	−0.75
Constructional praxis	111	−0.39 *	−0.27 *	−1.32
Constructional praxis recall	111	−0.46 *	−0.43 *	−0.42
Constructional praxis savings	111	−0.31 *	−0.32 *	0.11
Adjusted Chandler score	108	−0.44 *	−0.42 *	−0.29
CERAD-NAB (extension)
Letter fluency	108	−0.36 *	−0.41 *	0.54
Trail Making Test A	109	0.50 *	0.38 *	1.40
Trail Making Test B	101	0.55 *	0.46 *	0.97
Age	112	0.32 *	0.34 *	−0.17
Years of education	112	−0.34 *	−0.14 *	−2.09 *

M-WCST = Modified Wisconsin Card Sorting Test, CERAD-NAB = Consortium to Establish a Registry for Alzheimer’s Disease Neuropsychological Assessment Battery. ^Δ, Correlation coefficients were compared according to the procedure outlined by Meng et al. [46]. The correlation between the two types of M-WCST errors, needed to compare their respective correlations with CERAD-NAB scores, was r_s = 0.46. *, p < 0.05 (two-sided).