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Related Experiment Videos

Does hand proficiency determine hand preference?

D V Bishop

    British Journal of Psychology (London, England : 1953)
    |May 1, 1989
    PubMed
    Summary
    This summary is machine-generated.

    Hand preference and proficiency are linked. A new model shows that preference probability is proportional to hand proficiency, explaining observed correlations and preference distributions in handedness research.

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    Area of Science:

    • Cognitive Neuroscience
    • Human Behavior
    • Psychology

    Background:

    • Handedness research debates whether hand preference and hand proficiency stem from common factors or distinct behavioral dimensions.
    • Arguments against a common origin include imperfect correlations between preference and proficiency measures, and differing distribution shapes (normal for proficiency, J-shaped for preference).

    Purpose of the Study:

    • To propose and validate a model explaining the relationship between hand preference and hand proficiency.
    • To demonstrate that a single underlying factor can account for observed patterns in handedness data.

    Main Methods:

    • Development of a mathematical model where preference probability is directly proportional to relative hand proficiency.
    • The model assumes normally distributed relative hand proficiency.

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    Main Results:

    • The model successfully predicts imperfect correlations between hand preference and proficiency measures.
    • The model also accounts for the typically J-shaped distribution observed in hand preference data.

    Conclusions:

    • Observed correlations and distribution shapes in handedness do not contradict the hypothesis that preference is determined by proficiency.
    • A unified model can explain both preference and proficiency in human handedness.