Table 1

Participant demographic characteristics

CharacteristicADHD*
n = 26		TDC*
n = 25
Age, yr11.61 ± 2.5411.12 ± 2.74
Male/female, n13/1313/12
Conners 3 Parent Assessment Report
 Inattention75.69 ± 11.4055.40 ± 9.11
 Hyperactivity/impulsivity78.81 ± 11.6753.64 ± 8.36
Medication, n
 Methylphenidate110
 Amphetamine70
 α2 adrenergic agonist70
 Antidepressant30
 Other (nonpsychiatric)21
 No medication524
Right-handed/left-handed, n22/424/1
Motor performance, PPT†
 Dominant hand13.4 ± 1.9213.7 ± 2.10
 Nondominant hand12.7 ± 2.0913.0 ± 2.26
 Both hands11.1 ± 2.1711.2 ± 2.09

  • ADHD = attention-deficit/hyperactivity disorder; PPT = Purdue Pegboard Test; TDC = typically developing children.

  • ↵* Values are mean ± standard deviation, unless otherwise indicated.

  • ↵† For PPT in TDC, n = 23.