The Effects of Alarm System Reliability and Reaction Training Strategy on Alarm Responses

Abstract

Research has shown that humans react predictably to unreliable alarm systems and that some variables may mediate the relationship between alarm reliability and performance. Researchers have identified alarm design and operator training strategies to improve task operator reactions. The goal of the current project was to train task performers to use sensor activity patterns to improve subsequent alarm reactions. Eighty participants monitored a simulated security screen while completing a primary word search task. During low- and high-alarm reliability sessions motion sensors activated in various rooms, requiring acknowledgement. Alarms then activated, requiring participants to respond or ignore them. Participants received spatial, temporal, single sensor, or no training. They were also aware of alarm system reliability levels. Analyses revealed quicker reactions for trained participants and to high reliability alarms. Results suggest that single sensor training was most beneficial and that participants who received temporal training relied on alarm reliability as a cue.