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    Attention deficit - hyperactivity disorder in twins: A developmental genetic analysis

    Access Status
    Fulltext not available
    Authors
    Hay, David
    Bennett, Kellie
    Mcstephen, Michael
    Rooney, Rosanna
    Levy, F.
    Date
    2004
    Type
    Journal Article
    
    Metadata
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    Citation
    Hay, David and Bennett, Kellie and Mcstephen, Michael and Rooney, Rosanna and Levy, Florence. 2004. Attention deficit - hyperactivity disorder in twins: A developmental genetic analysis. Australian Journal of Psychology 56: pp. 99-107.
    Source Title
    Australian Journal of Psychology
    DOI
    10.1080/00049530410001734829
    ISSN
    0004-9530
    Faculty
    Faculty of Health Sciences
    School of Psychology
    URI
    http://hdl.handle.net/20.500.11937/29004
    Collection
    • Curtin Research Publications
    Abstract

    Although attention deficit-hyperactivity disorder (ADHD) has a distinct developmental progression and a substantial genetic component, very little is known about the genetic contribution to its development and the question of whether the same genes contribute to ADHD throughout childhood and into adolescence. Data from one of the most extensive twin databases, the Australian Twin ADHD Project (ATAP) have shown that ADHD is inherited as a behavioural dimension rather than as a discrete disorder. Behavioural genetic analysis is used in this study with both cross-sectional and longitudinal analyses of inattention and hyperactivity-impulsivity symptoms of ADHD to demonstrate that much of the consistency in behaviour during childhood and early adolescence is due to genetic influences. Genetic analyses help identify environmental influences that impact upon symptoms of inattention and hyperactivity-impulsivity. It is emphasised that the main function of genetic analysis does not lie in simply estimating the heritability of a trait, but rather in contributing to the understanding of developmental progression and environmental factors that may impinge upon this.

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