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The Interaction of Cognitive Load and Attention-Directing Cues in Driving



Details

  • Personal Author:
  • Description:
    Objective: This study investigated the effect of a nondriving cognitively loading task on the relationship between drivers' endogenous and exogenous control of attention. Background: Previous studies have shown that cognitive load leads to a withdrawal of attention from the forward scene and a narrowed field of view, which impairs hazard detection. Method: Posner's cue-target paradigm was modified to study how endogenous and exogenous cues interact with cognitive load to influence drivers' attention in a complex dynamic situation. In a driving simulator, pedestrian crossing signs that predicted the spatial location of pedestrians acted as endogenous cues. To impose cognitive load on drivers, we had them perform an auditory task that simulated the demands of emerging in-vehicle technology. Irrelevant exogenous cues were added to half of the experimental drives by including scene clutter. Results: The validity of endogenous cues influenced how drivers scanned for pedestrian targets. Cognitive load delayed drivers' responses, and scene clutter reduced drivers' fixation durations to pedestrians. Cognitive load diminished the influence of exogenous cues to attract attention to irrelevant areas, and drivers were more affected by scene clutter when the endogenous cues were invalid. Conclusion: Cognitive load suppresses interference from irrelevant exogenous cues and delays endogenous orienting of attention in driving. Application: The complexity of everyday tasks, such as driving, is better captured experimentally in paradigms that represent the interactive nature of attention and processing load. [Description provided by NIOSH]
  • Subjects:
  • Keywords:
  • ISSN:
    0018-7208
  • Document Type:
    Text
  • Funding:
    Grant
  • Genre:
    Journal Article
  • Place as Subject:
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    271-280
  • Volume:
    51
  • Issue:
    3
  • NIOSHTIC Number:
    nn:20063365
  • Citation:
    Hum Factors 2009 Jun; 51(3):271-280
  • Contact Point Address:
    Yi-Ching Lee, Human Factors Division, Institute of Aviation, University of Illinois at Urbana Champaign, 1 Airport Road, Savoy, IL 61874
  • Email:
    chinglee@illinois.edu
  • Federal Fiscal Year:
    2009
  • Performing Organization:
    University of Iowa
  • Peer Reviewed:
    True
  • Start Date:
    20050701
  • Source Full Name:
    Human Factors
  • End Date:
    20290630
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:0da439d77e50ec4970d6e02b836f835995c92b947d7084270cd607c62ae2e703f44ad035d9faa97c64f659f38540869b81eb3fd3dea664eb66f5fbf690cf0ba1
  • Download URL:
  • File Type:
    Filetype[PDF - 266.74 KB ]
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