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Testing the race inequality: A simple correction procedure for fast guesses

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In speeded response tasks with redundant signals, parallel processing of the redundant signals is generally tested using the so-called race inequality. The race inequality states that the distribution of fast responses for a redundant stimulus never exceeds the summed distributions of fast responses for the single stimuli. It has been pointed out that fast guesses (e.g. anticipatory responses) interfere with this test, and a correction procedure ('kill-the-twin' procedure) has been suggested. In this note we formally derive this procedure and extend it to the case in which redundant stimuli are presented with onset asynchrony. We demonstrate how the kill-the-twin procedure is used in a statistical test of the race model prediction.
OriginalsprogEngelsk
TidsskriftJournal of Mathematical Psychology
Vol/bind52
Udgave nummer5
Sider (fra-til)322-325
Antal sider4
ISSN0022-2496
DOI
StatusUdgivet - 1 okt. 2008

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