Means and standard deviations of the genotype groups on dependent measures obtained in the control, distractor and higher index of difficulty conditions; results of the main effect of Groups performance (Anova) and Chi-squared test.

Note: RT = reaction time; MT = movement time; PV = peak velocity; RTPV = relative time to peak velocity; NDASS = number of discontinuities in acceleration in the secondary submovement; IH = score of incorrect hits to the target.