2009 | 5 | 84-90
Article title

Designing informative warning signals: Effects of indicator type, modality, and task demand on recognition speed and accuracy

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An experiment investigated the assumption that natural indicators which exploit existing learned associations between a signal and an event make more effective warnings than previously unlearned symbolic indicators. Signal modality (visual, auditory) and task demand (low, high) were also manipulated. Warning effectiveness was indexed by accuracy and reaction time (RT) recorded during training and dual task test phases. Thirty-six participants were trained to recognize 4 natural and 4 symbolic indicators, either visual or auditory, paired with critical incidents from an aviation context. As hypothesized, accuracy was greater and RT was faster in response to natural indicators during the training phase. This pattern of responding was upheld in test phase conditions with respect to accuracy but observed in RT only in test phase conditions involving high demand and the auditory modality. Using the experiment as a specific example, we argue for the importance of considering the cognitive contribution of the user (viz., prior learned associations) in the warning design process. Drawing on semiotics and cognitive psychology, we highlight the indexical nature of so-calledauditory iconsornatural indicatorsand argue that the cogniser is an indispensable element in the tripartite nature of signification.
Physical description
  • School of Psychology and MARCS Auditory Laboratories, University of Western Sydney
  • School of Psychology and MARCS Auditory Laboratories, University of Western Sydney
  • School of Psychology and MARCS Auditory Laboratories, University of Western Sydney
  • School of Psychology and MARCS Auditory Laboratories, University of Western Sydney
  • Ballas, J. A. (1993). Common factors in the identification of an assortment of brief everyday sounds.Journal of Experimental Psychology: Human Perception and Performance, 19, 250-267.
  • Begault, D. R. (1994).3-D sound for virtual reality and multimedia.Boston: AP Professional.
  • Belz, S. M., Robinson, G. S., & Casali, J. G. (1999). A new class of auditory warning signals for complex systems: Auditory icons.Human Factors, 41, 608-618.
  • Caplin, S. (2001).Icon design: Graphic icons in computer interface design.London: Cassell.
  • Chute, D. L., & Westall, R. F. (1996). Fifth generation research tools: Collaborative development with Powerlaboratory.Behavior Research Methods, Instruments, and Computers, 28, 311-314.
  • Edworthy, J., & Hellier, E. (2006a). Complex nonverbal auditory signals and speech warnings. In M. S. Wogalter (Ed.),Handbook of warnings(pp. 199-220). Mahwah, NJ: Lawrence Erlbaum Associates.
  • Edworthy, J., & Hellier, E. (2006b). Alarms and human behaviour: Implications for medical alarms.British Journal of Anaesthesia, 97, 12-17.
  • Gaver, W. W. (1989). The Sonic Finder: An interface using auditory icons.Human-Computer Interaction, 4, 67-94.
  • Gaver, W. W., Smith, R. B., & O'Shea, T. (1991). Effective sounds in complex systems: The ARKola simulation. InConference on Human Factors in Computing Systems(CHI 1991) (pp. 85-90). New York: Association for Computing Machinery.
  • Gittens, D. (1986). Icon-based human-computer interaction.International Journal of Man-Machine Studies, 24, 519-543.
  • Graham, R. (1999). Use of auditory icons as emergency warnings: Evaluation within a vehicle collision avoidance application.Ergonomics, 42, 1233-1248.
  • Isherwood, S., McDougall, S., & Curry, M. (2007). Icon identification in context: The changing role of icon characteristics with user experience.Human Factors, 49, 465-476.
  • Keller, P., & Stevens, C. (2004). Meaning from environmental sounds: Types of signal-referent relations and their effect on recognizing auditory icons.Journal of Experimental Psychology: Applied, 10, 3-12.
  • McDougall, S. J. P., Curry, M. B., & de Bruijn, O. (1999). Measuring symbol and icon characteristics: Norms for concreteness, complexity, meaningfulness, familiarity, and semantic distance for 239 symbols.Behavior Research Methods, Instruments, & Computers, 31, 487-519.
  • McDougall, S. J. P., Curry, M. B., & de Bruijn, O. (2001). The effects of visual information on users' mental models: An evaluation of pathfinder analysis as a measure of icon usability.International Journal of Cognitive Ergonomics, 5, 59-84.
  • McDougall, S. J. P., de Bruijn, O., & Curry, M. B. (2000). Exploring the effects of icon characteristics on user performance: The role of icon concreteness, complexity, and distinctiveness.Journal of Experimental Psychology: Applied, 6, 291-306.
  • McKeown, D., & Isherwood, S. (2007). Mapping candidate within-vehicle auditory displays to their referents.Human Factors, 49, 417-428.
  • Momtahan, K., Hétu, R., & Tansley, B. (1993). Audibility and identification of auditory alarms in the operating room and intensive care unit.Ergonomics, 36, 1159-1176.
  • Patterson, R. D. (1982).Guidelines for auditory warning systems on civil aircraft(paper no. 82017). London: Civil Aviation Authority.
  • Peirce, C. S. (1932). Division of signs. In C. Hartshorne & P. Weiss (Eds.) (1960),Collected papers of Charles Sanders Peirce(Vol II, pp. 134-173). Cambridge, Mass: Harvard University Press.
  • Perry, N., Stevens, C., Wiggins, M., & Howell, C. (2007). Cough once for danger: An experimental investigation of auditory icons as informative warning signals in civil aviation.Human Factors, 49, 1061-1071.
  • Petocz, A., Keller, P., & Stevens, C. (2008). Auditory warnings, signal-referent relations, and natural indicators: Re-thinking theory and application.Journal of Experimental Psychology: Applied, 14, 165-178.
  • Stephan, K. L., Smith, S. E., Martin, R. L., Parker, S. P. A., & McAnally, K. (2006). Learning and retention of associations between auditory icons and denotative referents: Implications for the design of auditory warnings.Human Factors, 48, 288-299.
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