Effects of signal and stimulus rates on vigilance performance

Abstract

INVESTIGATED THE RELATIVE EFFECTS OF CRITICAL SIGNAL RATE, NORMAL NONCRITICAL SIGNAL RATE, AND CRITICAL SIGNAL PROBABILITY ON DETECTION IN A VISUAL VIGILANCE TASK. 72 COLLEGE SS MONITORED A CLOCK DISPLAY FOR 54 MIN. RESULTS SUGGEST THAT NORMAL SIGNAL RATE MAY BE OF GREATER IMPORTANCE IN A VIGILANCE SITUATION THAN EITHER CRITICAL SIGNAL RATE OR CRITICAL SIGNAL PROBABILITY. IN GENERAL, BOTH PERCENTAGE OF DETECTIONS AND PERCENTAGE OF STIMULI FALSELY RESPONDED TO WERE INVERSELY RELATED TO NORMAL SIGNAL PRESENTATION. (PsycInfo Database Record (c) 2025 APA, all rights reserved)