Table 1.

Group means, SDs (in parentheses), and p values for demographic and neuropsychological scores for Experiment 2

	Younger		Older		p Values
	Monolingual	Bilingual	Monolingual	Bilingual	Age group	Language group	Age × language
Age	32.2 (3.3)	31.6 (4.3)	64.4 (5.1)	63.9 (4.0)	<0.001	0.92	0.74
Education	17.1 (2.6)	18.3 (2.5)	17.5 (2.6)	17.4 (2.2)	0.37	0.38	0.23
ISP	26.1 (5.3)	21.7 (10.1)	21.6 (7.0)	19.7 (8.7)	0.12	0.19	0.58
PPVT	107.2 (11.8)	101 (10.7)	110.1 (13.9)	105.3 (18.5)	0.28	0.13	0.85
IQ	126.6 (23.3)	121.3 (15.6)	124.6 (20.2)	127.6 (22.5)	0.64	0.80	0.38
DF	10.7 (2.5)	10.8 (2.4)	10.6 (2.0)	9.7 (2.1)	0.22	0.50	0.38
DB	10.4 (2.8)	10.3 (3.1)	10.5 (2.1)	10.5 (3.2)	0.83	0.96	0.93

DB, Digits backward; DF, digits forward; IQ, Cattell Culture Fair Intelligence Test; ISP, Index of Social Position; PPVT, Peabody Picture Vocabulary Test. Values for the PPVT, IQ, and DB are age-scaled scores.