Table 1.

Group means, standard deviations (in parentheses), and p-values for demographic and neuropsychological scores for Experiment 2.

	Younger Monolingual	Younger Bilingual	Older Monolingual	Older Bilingual	Age Group	p-values 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

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