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Related Experiment Videos

Sequential effects in judgments of loudness

W Jesteadt, R D Luce, D M Green

    Journal of Experimental Psychology. Human Perception and Performance
    |February 1, 1977
    PubMed
    Summary
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    Sequential effects in perception, specifically magnitude estimation and absolute identification, are limited to one trial, aligning with the response ratio hypothesis. However, signal decibel differences significantly influence response correlations, necessitating a revised hypothesis.

    Area of Science:

    • Cognitive psychology
    • Auditory perception
    • Psychophysics

    Background:

    • Sequential effects in perception influence how individuals respond to stimuli.
    • Previous models, like those from Lockhead's students, suggested broader sequential effects.
    • The response ratio hypothesis offered a simpler explanation for these effects.

    Purpose of the Study:

    • To present a multiple regression analysis of sequential effects as an alternative to existing models.
    • To investigate the trial-to-trial dependency in magnitude estimation and absolute identification.
    • To refine the response ratio hypothesis based on empirical findings.

    Main Methods:

    • Multiple regression analysis was employed to examine sequential effects.
    • Data from magnitude estimation and absolute identification tasks were analyzed.

    Related Experiment Videos

  • Distributions of normalized responses were compared to theoretical predictions.

    • Main Results:

    • Sequential effects were found to be limited to the immediately preceding trial.
    • The correlation between successive responses was strongly dependent on the decibel difference between signals.
    • The response ratio hypothesis required modification to account for the influence of signal difference.

    Conclusions:

    • Sequential effects in these tasks are short-lived, typically lasting only one trial.
    • Auditory signal intensity differences play a crucial role in shaping response correlations.
    • The reformulated response ratio hypothesis provides a more accurate model of perceptual sequential effects.