Table 6.

Cohen’s d effect sizes

Groups	Intra- individual SD	CV	SDMT	Paced Timing Precision	Paced Timing CV
Control vs. High	0.26	0.55	−0.79	−1.01	−0.79
Control vs. Medium	−0.07	0.13	−0.39	−0.44	−0.37
Control vs. Low	−0.14	−0.09	0.004	−0.19	−0.20
Low vs. High	0.40	0.61	−0.72	−0.80	−0.61
Low vs. Medium	0.09	0.23	−0.36	−0.24	−0.15
High vs. Medium	0.33	0.45	−0.39	−0.57	−0.53

Note. SD = standard deviation; CV = coefficient of variation; SDMT = Symbol Digit Modalities Test; Control = Control CAG-age product (CAP) group; Low = Low CAP group; Medium = Medium CAP group; High = High CAP group.