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. Author manuscript; available in PMC: 2022 Apr 11.
Published in final edited form as: J Int Neuropsychol Soc. 2021 May 17;28(4):371–381. doi: 10.1017/S1355617721000576

Table 2.

Motor performance measures by age correlations

ADHD TD


Whole Group (n=260) ADHD (n=148) TH (n=112) Boys (n=103) Girls (n=45) Boys (n=71) Girls (n=41)







r-value p-value r-value p-value r-value p-value r-value p-value r-value p-value r-value p-value r-value p-value







Total Overflow −.436 <.0001 −.375 <.0001 −.610 <.0001 −.349 <.001 −.481 .001 −.644 <.0001 −.565 <.001
Mean Tap Time −.488 <.0001 −.453 <.0001 −.537 <.0001 −.491 <.0001 −.340 .022 −.520 <.0001 −.553 <.001
Standard Deviation Tap Time −.442 <.0001 −.453 <.0001 −.430 <.0001 −.515 <.0001 −.336 .024 −.399 .001 −.553 .003

Pearson’s correlations examining associations between age and total overflow, mean tap time, and standard deviation tap time in the whole group and separately among ADHD and TD across and within sex