Table 1. Demographics (±SD) and genetics of the samples included in the experiments performed.

	Cognitive Behavior	fMRI	sMRI
N	387	329	211
Gender (M/F)	194/193	161/168	114/97
Age	26.61±7.76	27.06±7.76	26.47±7.42
Handedness	0.73±0.42	0.77±0.36	0.62±0.51
IQ	107.57±12.48	109.81±12.38	107.77±12.62
N
CHRNA5 GG/DRD2 GG	122	99	72
CHRNA5 GG/DRD2 Tcarriers	28	21	15
CHRNA5 GA/DRD2 GG	143	117	76
CHRNA5 GA/DRD2 Tcarriers	42	45	23
CHRNA5 AA/DRD2 GG	42	36	28
CHRNA5 AA/DRD2 Tcarriers	10	11	7