Table 2.

Behavioral data in Val/Val and Met carriers (mean ± SD)

	Number of trials (of 45)
	Initial testing		Delayed testing
	Val/Val (n = 14)	Met carriers (n = 15)	Val/Val (n = 14)	Met carriers (n = 15)
RH	14.1 ± 8.7	11.5 ± 4.9	13.4 ± 8.9	13.1 ± 4.7
KH	15.1 ± 5.8	15.6 ± 5.6	13.2 ± 4.4	11.0 ± 4.4
GH	10.3 ± 4.8	11.3 ± 3.2	11.8 ± 5.4	13.4 ± 4.2
MI	5.4 ± 4	6.3 ± 3.4	6.5 ± 4.4	7.5 ± 4.1
CR	31.3 ± 7.7	28.1 ± 4.7	38.8 ± 5.5	35.3 ± 5.3
FA	13.3 ± 7.6	16.3 ± 4.7	6 ± 5.3	9.7 ± 5.3
d′	2.0 ± 0.7	1.5 ± 0.4	2.6 ± 0.9	1.9 ± 0.5
Criterion	−0.4 ± 0.6	−0.4 ± 0.3	0.03 ± 0.6	−0.1 ± 0.3