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Experimenter bias against subliminal perception? Comments on a replication

D P Spence, G J Smith

    British Journal of Psychology (London, England : 1953)
    |August 1, 1977
    PubMed
    Summary
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    Replications of subliminal perception studies failed to find effects due to less sensitive measurement tools. These studies were not true replications, impacting the understanding of subliminal perception.

    Area of Science:

    • Psychology
    • Cognitive Science
    • Neuroscience

    Background:

    • Subliminal perception research investigates unconscious stimuli effects.
    • Previous studies reported significant subliminal effects, but replications have yielded null results.

    Purpose of the Study:

    • To critically evaluate three replication attempts of subliminal perception experiments.
    • To identify potential reasons for the failure to replicate previous findings.

    Main Methods:

    • Analysis of methodologies used in the original experiments and their replications.
    • Comparison of measurement instruments and sensitivity across studies.

    Main Results:

    • The three replication studies are criticized for not adhering to the original methodologies.

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  • A key difference identified is the potential shift from sensitive to insensitive measurement instruments.

    • Conclusions:

    • The failure to find subliminal effects in replications may stem from methodological deviations, particularly instrument sensitivity.
    • Further research should ensure true replications with comparable measurement sensitivity to validate findings in subliminal perception.