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Related Experiment Videos

Dextroamphetamine and placebo practice effects on selective attention in hyperactive children.

M A Fisher

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

    Dextroamphetamine (D) improves attention in hyperactive boys by reducing response times and interference. However, practice effects on placebo do not carry over after amphetamine use, impacting long-term therapy benefits.

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    Area of Science:

    • Neuroscience
    • Child Psychology
    • Pharmacology

    Background:

    • Hyperactive behavior in children often necessitates therapeutic interventions.
    • Selective attention is a key cognitive function affected by hyperactivity.
    • Dextroamphetamine is a common medication prescribed for attention deficits.

    Purpose of the Study:

    • To investigate the effects of dextroamphetamine on selective attention in hyperactive boys.
    • To examine the influence of drug-state-dependent practice on cognitive performance.
    • To assess the implications for long-term dextroamphetamine therapy.

    Main Methods:

    • Three groups of hyperactive boys participated in a classification task.
    • Participants were administered dextroamphetamine (D) or placebo (P) in different sequences (DP, PD, PP).

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  • Performance on selective attention was measured under different drug conditions and practice schedules.

    • Main Results:

    • Dextroamphetamine significantly reduced response times and interference from irrelevant information.
    • Practice during placebo sessions improved subsequent placebo performance.
    • Practice during dextroamphetamine sessions did not enhance performance in subsequent placebo sessions.

    Conclusions:

    • Dextroamphetamine effectively enhances immediate attentional performance in hyperactive children.
    • The practice effect is drug-state dependent, suggesting limited long-term benefits from practice during amphetamine use.
    • Further assessment is needed to understand the long-term impact of dextroamphetamine therapy considering these practice effects.