Table <b>6.</b> Correlations between mean differences in sleep quality parameters and mean differences in cognitive abilities in the cognitive training and active control groups.

1d = mean-differences (post-intervention mean minus baseline mean); AM = 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.09, * = significant at the level of.05, ** = significant at the level of.01.