Table 2.

Reaction Time (RT) Difference Scores in Milliseconds for All Genotypes

		RT difference score (SD)		z RT difference score (SD)
Genotype	N	Short SOA (Facilitation)	Long SOA (IOR)	Short SOA (Facilitation)	Long SOA (IOR)
COMT
Met/Met	20	72.58 (113.88)	14.63 (114.12)	0.36 (0.51)	−0.05 (0.49)
Val carrier	66	54.74 (82.46)	54.94 (105.50)	0.29 (0.49)	0.25 (0.49)
CHRNA4
T/T	26	49.51 (101.30)	51.37 (102.56)	0.25 (0.55)	0.26 (0.60)
T/C	41	60.69 (84.84)	32.45 (110.84)	0.30 (0.50)	0.15 (0.49)
C/C	18	72.76 (91.18)	63.06 (113.95)	0.43 (0.36)	0.19 (0.40)
DAT1
9-R	41	54.87 (99.09)	45.15 (101.33)	0.26 (0.45)	0.22 (0.48)
10-R	39	53.70 (80.90)	35.92 (98.53)	0.34 (0.56)	0.16 (0.47)
COMT × DAT1
Met/Met × 9-R	8	64.27 (87.42)	29.1 (69.35)	0.22 (0.32)	0.16 (0.28)
Met/Met × 10-R	11	66.55 (129.90)	22.81 (127.40)	0.43 (0.62)	−0.07 (0.36)
Val carrier × 9-R	33	51.13 (80.47)	37.68 (105.63)	0.27 (0.48)	0.24 (0.52)
Val carrier × 10-R	28	49.86 (84.98)	55.08 (88.36)	0.29 (0.56)	0.25 (0.48)

Note. SOA = stimulus-onset-asynchrony; IOR = inhibition of return.