back to software GoStop Impulsivity Paradigm
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The GoStop Impulsivity Paradigm is a "stop task" designed to measure response inhibition. The primary response of interest here is the failure to inhibit responding when a "go" cue is unexpectedly accompanied by a "stop" cue. |
In this task, 5-digit numbers are presented in rapid sequence. Half of these numbers are target trials (matching stimuli) and half are filler trials (novel stimuli). This task features stop" trials for half of all target trials, where the matching number presented in black (the go cue) changes to red (the stop cue) at intervals ranging from 50 to 350 msec after the stimulus presentation. Participants are instructed to response while the matching number is still on the monitor, but not to respond if that number turns red. The main impulsivity variable obtained from this task is the percentage of inhibition failures, which is calculated from the number of responses made to stop trials divided by the total number of stop trials.
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