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Related Experiment Videos

Span of apprehension in hyperactive boys.

C L Denton, C W McIntyre

    Journal of Abnormal Child Psychology
    |March 1, 1978
    PubMed
    Summary

    Hyperactive boys show a true attention deficit. Their span of apprehension, a measure of visual processing, significantly decreases with increased visual noise, unlike normal boys.

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    Area of Science:

    • Cognitive Psychology
    • Neurodevelopmental Disorders

    Background:

    • Attention deficits are a core feature of hyperactivity.
    • Quantifying attention spans in children is crucial for understanding developmental differences.

    Purpose of the Study:

    • To compare the span of apprehension in hyperactive and normal boys.
    • To investigate the impact of visual noise on attention span.

    Main Methods:

    • Utilized a forced-choice letter-recognition task (Estes, 1965) to measure apprehension span.
    • Manipulated the presence and quantity of visual 'noise' (distractor letters).

    Main Results:

    • No difference in span size was found between groups in the absence of visual noise.
    • Hyperactive boys exhibited a reduced span size in the presence of visual noise.
    • The reduction in span size for hyperactive boys increased proportionally with the amount of visual noise.

    Conclusions:

    • The findings suggest a genuine deficit in attention for hyperactive boys.
    • Visual noise significantly impairs the attention span of hyperactive children, indicating a sensitivity to distractors.

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