Tester for measuring impulsivity, vigilance, and distractibility

摘要

A small, portable and inexpensive apparatus, and a testing method using the same, are employed to obtain objective data about children to differentiate between hyperactive and non-hyperactive children. In a Delay Task, the child depresses a button, and after at least a predetermined delay interval depresses the button again. Points are scored if the child waits for a sufficient time, but no point is scored if the child presses the button too soon. In a Vigilance Task, a stream of symbols, which can be numerical digits, is presented in a random or pseudorandom order. If the child sees a "1" followed by a "9", the child is instructed to depress the push-button, but not to otherwise. The number of correct responses, errors of commission, (depressing the button at the wrong time) and errors of omission, (failure to depress the button) are recorded. At the end of the task, the data for the tested child are compared with normative data, and an analysis can be made of the child's tendency toward hyperactivity. A Distractibility Task, similar to the Vigilance Task, uses random flashes of symbols to one or both sides of the relevant symbols. The symbols can be given by synthetic speech, for example for testing blind children or for cross-modal testing. Tracking data, e.g., sequences of symbols before or after errors of commission or omission are recorded, and can be utilized in evaluating the child. An autoboot feature automatically defaults to standard test conditions unless other conditions are selected and entered.