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Related Experiment Videos

The cost of visual filtering.

D Kahneman, A Treisman, J Burkell

    Journal of Experimental Psychology. Human Perception and Performance
    |August 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Processing irrelevant events, not their presence, delays responses. This "filtering cost" in attention tasks is reduced by advance information about target location or distractor presentation.

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    Area of Science:

    • Cognitive psychology
    • Neuroscience
    • Visual attention

    Background:

    • Attentional processes are crucial for selecting relevant information amidst distractors.
    • Spatial uncertainty and the presence of irrelevant stimuli can impact response times.
    • Previous research suggests parallel processing capabilities in visual search.

    Purpose of the Study:

    • To investigate the factors contributing to "filtering costs" in speeded choice responses.
    • To determine whether the processing of irrelevant events or their mere presence causes attentional delays.
    • To explore methods for mitigating these filtering costs.

    Main Methods:

    • Participants performed speeded choice responses (reading or naming) to target stimuli.
    • Stimuli were presented under conditions of spatial uncertainty with simultaneous distractors.

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  • Response times were measured under various conditions, including object removal and advance information.

    • Main Results:

    • Simultaneous irrelevant events significantly delayed speeded choice responses, a phenomenon termed "filtering cost."
    • This cost persisted even when targets and distractors were highly discriminable, allowing for parallel detection.
    • Reading responses were also delayed by the removal of irrelevant objects coinciding with target onset.
    • Filtering costs were attributed to the processing demands of irrelevant events, not their mere presence.
    • Advance information regarding target location or prior presentation of distractors eliminated these costs.

    Conclusions:

    • The processing of irrelevant information, rather than its static presence, incurs a significant "filtering cost" in attention.
    • These findings highlight the dynamic nature of attentional filtering and its susceptibility to processing load.
    • Strategic interventions, such as advance cueing, can effectively reduce attentional costs under spatial uncertainty.