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A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
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Working memory modulates the association between time and number representation.

Cuihua Bi, Peiduo Liu, Xiangyong Yuan

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    |August 12, 2014
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    Summary
    This summary is machine-generated.

    Working memory (WM) influences the link between time and number perception. When WM content matched stimuli, the number-time association was abolished, suggesting modulation at the decision level.

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    Area of Science:

    • Cognitive Psychology
    • Neuroscience
    • Human Perception

    Background:

    • The interplay between numerical magnitude and temporal duration is a key aspect of mental representation.
    • Working memory (WM) is crucial for cognitive tasks, but its specific role in modulating the time-number association is not fully understood.

    Purpose of the Study:

    • To investigate how working memory (WM) content affects the interaction between time and number representations.
    • To determine if WM modulates the perceived duration based on numerical magnitude.

    Main Methods:

    • Participants memorized a digit (WM content) and then performed time judgment tasks involving presented digits.
    • Experiments involved varying stimulus repetition, using equality judgments to control for response bias, and manipulating WM load.
    • Comparative and equality duration judgments were employed.

    Main Results:

    • The numerical magnitude effect on temporal performance was abolished when one of the presented digits matched the WM content.
    • Interference effects were observed only when neither digit matched the WM content.
    • WM content did not impact the time-number link when response biases were eliminated or in simple attention tasks.
    • WM-based interference was relevant to duration only in comparative judgments.

    Conclusions:

    • Working memory modulates the mental association between time and number representations.
    • This modulation appears to occur primarily at the decision-making level, rather than altering perception itself.
    • The duration of WM content specifically influences comparative judgments.