ON RESOURCE STRATEGY LIMITATIONS IN HYPERACTIVITY: COGNITIVE IMPULSIVITY RECONSIDERED

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Abstract
Overactive and distractible (hyperactives), normoactive and distractable, and normoactive and attentive (controls) children were administered a high-speed visual search task. The display load was manipulated and all subjects were administered the tasks in 3 instruction conditions: speed, normal and accuracy. Speed-accuracy trade-off curves indicated that the controls and distractibles conformed to the fast guess model, which relates speed and accuracy. Hyperactives partially conformed to this model. A structural process deficit is evidently not indicated in hyperactivity. A resource strategy defect may be characteristic of hyperactivity.