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Related Experiment Videos

Judging up and down.

H H Clark, H H Brownell

    Journal of Experimental Psychology. Human Perception and Performance
    |November 1, 1975
    PubMed
    Summary
    This summary is machine-generated.

    Participants responded faster to arrow direction based on their vertical position, a congruity effect. This effect stems from selecting perceptual information, not motor responses or instruction maintenance.

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    Area of Science:

    • Cognitive Psychology
    • Perception
    • Human Factors

    Background:

    • The congruity effect describes how the spatial location of a stimulus can influence response times.
    • Previous research has explored various factors contributing to such effects, including the Stroop effect.

    Purpose of the Study:

    • To investigate the underlying mechanisms of the congruity effect in visual perception.
    • To determine whether the effect arises from motor response activation, instruction maintenance, or perceptual information selection.

    Main Methods:

    • Experiment 1 established the congruity effect: faster responses to upward arrows in higher positions and downward arrows in lower positions.
    • Experiments 2-4 systematically tested three potential sources of the effect: motor response, implicit instruction, and perceptual selection.

    Related Experiment Videos

  • Participants judged arrow direction (up/down) at various vertical positions within a rectangle.

    • Main Results:

    • Results consistently supported the hypothesis that the congruity effect is driven by the selection of perceptual information.
    • Evidence did not support the involvement of motor response activation or the maintenance of implicit task instructions.
    • The findings showed critical differences compared to previous demonstrations of the Stroop effect.

    Conclusions:

    • The congruity effect, where arrow direction judgment is influenced by vertical position, is primarily mediated by the selection of relevant perceptual cues.
    • This suggests that spatial information is integrated early in the processing stream, influencing the choice of perceptual information for response.
    • The findings differentiate this spatial congruity effect from other interference effects like the Stroop effect.