Table 4.

Task-switching activation means, SDs (in parentheses), and p values for primary common regions

	Younger		Older		p values
	Monolingual	Bilingual	Monolingual	Bilingual	Age group	Language group	Age × language
Left DLPFC	0.33 (0.29)	0.38 (0.15)	0.64 (0.24)	0.44 (0.16)	<0.007	0.12	<0.007
Left VLPFC	0.19 (0.18)	0.24 (0.12)	0.45 (0.19)	0.26 (0.14)	<0.007	0.09	<0.007
Right DLPFC	0.18 (0.14)	0.25 (0.17)	0.39 (0.20)	0.36 (0.12)	<0.007	0.84	0.17
Right VLPFC	0.23 (0.17)	0.20 (0.15)	0.41 (0.18)	0.32 (0.14)	<0.007	0.10	0.48
ACC	0.22 (0.22)	0.28 (0.20)	0.53 (0.23)	0.31 (0.19)	<0.007	0.08	<0.007
Left SMG	0.23 (0.20)	0.26 (0.22)	0.32 (0.21)	0.25 (0.18)	0.46	0.61	0.24
Right SMG	0.35 (0.18)	0.37 (0.24)	0.39 (0.24)	0.40 (0.16)	0.45	0.72	0.76

L, Left; R, right; ACC, anterior cingulate cortex; DLPFC, dorsolateral prefrontal cortex; SMG, supramarginal gyrus; VLPFC, ventrolateral prefrontal cortex.