Table 1.

Demographics and mean normative scores on the standard neuropsychological tests for the ε4 carriers and non-carriers. Standard deviations are presented in parentheses.

	ε4 Carriers	Non-Carriers
Demographics
Age	67.4 (5.8)	65.7 (7.2)
Education	17.3 (1.8)	16.9 (1.8)
Gender	12 female/6 male	11 female/6 male
WAIS-IV
VCI	Std = 119.3 (10.2)	Std = 122.9 (11.8)
WMI	Std = 106.4 (9.7)	Std = 112.5 (13.5)
Memory
CVLT long delay free recall	Z = 0.7 (0.8)	Z = 0.5 (0.9)
RCFT delay recall	Z = 1.1 (0.9)*	Z = 0.0 (0.8)
Language
BNT total score	Z = 1.1 (0.8)	Z = 0.6 (0.9)
Animal fluency	Z = −0.3 (1.2)	Z = 0.0 (1.2)
Speed/Executive Function
Trails A	Z = 0.3 (1.2)	Z = 0.3 (1.2)
Trails B	Z = 0.1 (0.9)	Z = 0.3 (0.9)
Visuospatial processing
WAIS-IV Block Design	Z = 0.9 (1.0)	Z = 0.6 (1.0)
RCFT copy trial	Z = 0.4 (1.3)	Z = −0.2 (0.8)

Note:

^*= difference between groups, p < .05; VCI = Verbal Comprehension Index (WAIS-IV), WMI = Working Memory Index (WAIS-IV), CVLT II= California Verbal Learning Test - II, RCFT = Rey-Osterrieth Complex Figure Test, BNT = Boston Naming Test. Norms for the WAIS are from the manual (Wechsler, 2008). Norms the CVLT-II are from the manual (Delis et al., 2000). Norms for the RCFT are from Fastenau and colleagues (Fastenau et al., 1999). Norms for animal fluency, BNT, and Trail Making Test are from Heaton and colleagues (Heaton, Miller, Taylor, & Grant, 2004).