ANCOVA (age as covariate) showed participants struck significantly more distractors (participants without comorbid ADHD, 22.71% participants with comorbid ADHD, 23.56% and controls, 15.59% ). The primary outcome was the percentage of distractors struck. Performance was compared to 146 typically developing controls (mean age 13 years 6.1-19.9). Sixty-four children with tics (mean age 12.4 years 7.5-18.5) were evaluated using a validated robotic bimanual exoskeleton protocol (Kinarm) in an object-hit-and-avoid task, in which target and distractor objects moved across a screen and participants aimed to hit only the targets while avoiding distractors. Our objective was to test inhibitory control in children with tics through simultaneous presentation of multiple, mobile stimuli.
This has been evaluated using different behavioural tasks, yielding mixed results. Tic disorders may reflect impaired inhibitory control.
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