Human probability matching behaviour in response to alarms of varying reliability
- 1 November 1995
- journal article
- research article
- Published by Taylor & Francis Ltd in Ergonomics
- Vol. 38 (11), 2300-2312
- https://doi.org/10.1080/00140139508925269
Abstract
The goals of this research were to substantiate the existence of the cry-wolf effect for alarm responses, quantifying its effect on operator performance. A total of 138 undergraduate students performed two blocks of a cognitively demanding psychomotor primary task; at the same time, they were presented with alarms of varying reliabilities (25, 50 and 75% true alarms) and urgencies (green, yellow and red visual alarms presented concurrently with low-, medium- and high-urgency auditory civilian aircraft cockpit alarms). Alarm response frequencies were observed and analysed, and /-tests and repeated-measures MANOVAs were used to assess the effects of increasing alarm reliability on alarm response frequencies, speed and accuracy. The results indicate that most subjects (about 90%) do not respond 10 all alarms but match their response rates to the expected probability of true alarms (probability matching). About 10% of the subjects responded in the extreme, utilizing an all-or-none strategy. Implications of these results for alarm design instruction and further research are discussed.This publication has 16 references indexed in Scilit:
- Mapping of psychoacoustic parameters to the perceived urgency of auditory warning signals.Published by Carleton University ,2018
- Sociotechnical communication in an underground mine fire: a study of warning messages during an emergency evacuationSafety Science, 1993
- Improving Auditory Warning Design: Relationship between Warning Sound Parameters and Perceived UrgencyHuman Factors: The Journal of the Human Factors and Ergonomics Society, 1991
- Effects of linguistic redundancy and coded voice warnings on system response timeApplied Ergonomics, 1989
- Warning Systems in Risk ManagementRisk Analysis, 1986
- Degradation of force-loaded pursuit tracking performance in a dual-task paradigm†Ergonomics, 1986
- The Effect of Asymmetric Transfer and Speech Technology on Dual-Task PerformanceHuman Factors: The Journal of the Human Factors and Ergonomics Society, 1985
- Synthesized Warning Messages: Effects of an Alerting Cue in Single- and Multiple-Function Voice Synthesis SystemsHuman Factors: The Journal of the Human Factors and Ergonomics Society, 1984
- An “Alarming” situation in the intensive therapy unitIntensive Care Medicine, 1983
- Probability matching in signal detectionPsychonomic Science, 1969