Abstract
Tested the prediction that the slope of the performance curve following warning is similar for different performance measures. Preparatory intervals of 200, 500, 1500, and 4000 msec. were employed to assess the effects of warning on 2 response measures, accuracy of report, and RT. Results showed the pattern of response at different points following warning to be the same for the 2 measures of performance. Since the results remain the same, though the response is changed from finger movement to the spoken word and the measure from speed to accuracy, support for central process involvement was inferred. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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