Mixed models statistics for within-group, baseline and between-group differences on cognitive abilities for the two study groups after adjusting for age.

1AM = Auditory (non-linguistic) memory; DA = Divided Attention; DS = Avoiding Distractions; GC = Hand-eye co-ordination.GM = General Memory; IN = Inhibition; NM = Naming; PL = Planning; RT = Response Time; SH = Shifting; SP = Spatial Perception; TE = Time estimation; VM = Visual Working Memory; VP = Visual Perception; VS = Visual Scanning; WM = Working Linguistic-Auditory Memory.2Significance levels:* = significant at the level of 0.05,** = significant at the level of 0.01,*** = significant at the level of 0.001.3Cohen's d effect sizes:∧ = small-sized effect,∧∧ = medium-sized effect,∧∧∧ = large-sized effect.