Estimating Premorbid Intelligence among Older Adults: The Utility of the AMNART

Table 2

Premorbid estimate means among diagnostic and educational groups.

Group	AMNART z-score	VIQ z-score	Information z-score
Diagnostic Group
Normal Aging	1.56	1.27	1.24
AAMI	1.34	1.30	1.38
MCI	1.28	0.53	0.78
Dementia	0.83	−0.31	0.13
Educational group
0–12 years	0.88	0.18	0.35
13–16 years	1.28	0.70	0.86
17+ years	1.53	1.10	1.26