Table 3.

Main effects and interactions in the HC group (n = 39).

Main effect or interaction	F-value	Degrees of freedom	p-value	Partial eta squared
Learning phase (session 1)
Phase	0.02	1, 36	0.894	<0.01
Phase × DAT1-genotype	0.004	1, 36	0.950	<0.01
Pair*	24.34	2, 72	<0.001	0.40
Pair × DAT1-genotype	1.27	2, 72	0.288	0.03
Phase × pair	0.50	2, 72	0.609	0.01
Phase × pair × Dat1-genotype	0.18	2, 72	0.833	<0.01
DAT1-genotype	1,73	1, 36	0.197	0.05
Transfer phase (session 2)
Phase	0.01	1, 36	0.944	<0.01
Phase × DAT1-genotype	0.59	1, 36	0.447	0.02
Learning capacity*	9.84	1.7, 60.6	<0.001	0.22
Learning capacity × DAT1-genotype	0.29	1.7, 60.6	0.713	0.01
Phase × learning capacity	0.29	1.6, 57.1	0.697	0.01
Phase × learning capacity × DAT1-genotype	0.18	1.6, 57.1	0.788	0.01
DAT1-genotype	2.72	1, 36	0.108	0.07

*Effects that are significant at p < 0.05 are highlighted in bold and are marked with an asterisk. If required violations of sphericity were corrected with Greenhouse-Geisser.