Reaction Time (RTI)
Overview
Reaction Time (RTI) is a latency task with a comparative history (the five choice task) and uses a procedure to separate response latency from movement time. It is more useful than CRT or SRT where it is necessary to control for tremor.
Administration Time
Around 5 minutes, depending on level of impairment
Task
The task is divided into five stages, which require increasingly complex chains of responses. In each case, the participant must react as soon as a yellow dot appears. In some stages the dot may appear in one of five locations, and the participant must sometimes respond by using the press-pad, sometimes by touching the screen, and sometimes both.
Outcome Measures
The four outcome measures in RTI are divided into reaction time (simple and 5-choice) and movement time (simple and five-choice).
Test
Clinical mode, parallel mode and child mode
Interactive Demo
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