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  2. Hunter versus farmer hypothesis - Wikipedia

    en.wikipedia.org/wiki/Hunter_versus_farmer...

    The hunter versus farmer hypothesis is a proposed explanation for the nature of attention-deficit hyperactivity disorder (ADHD). It was first suggested by radio host Thom Hartmann in his book Attention Deficit Disorder: A Different Perception .

  3. Attention deficit hyperactivity disorder - Wikipedia

    en.wikipedia.org/wiki/Attention_deficit...

    Attention deficit hyperactivity disorder (ADHD) [1] is a neurodevelopmental disorder characterized by symptoms of inattention, hyperactivity, impulsivity and emotional dysregulation that are excessive and pervasive, impairing in multiple contexts, and developmentally-inappropriate. [9] ADHD symptoms arise from executive dysfunction. [18]

  4. Neurodevelopmental disorder - Wikipedia

    en.wikipedia.org/wiki/Neurodevelopmental_disorder

    Attention deficit hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterised by executive dysfunction occasioning symptoms of inattention, hyperactivity, impulsivity and emotional dysregulation that are excessive and pervasive, impairing in multiple contexts, and developmentally-inappropriate.

  5. Adult attention deficit hyperactivity disorder - Wikipedia

    en.wikipedia.org/wiki/Adult_attention_deficit...

    Adult Attention Deficit Hyperactivity Disorder is the persistence of attention deficit hyperactivity disorder (ADHD) into adulthood. It is a neurodevelopmental disorder , meaning impairing symptoms must have been present in childhood, except for when ADHD occurs after traumatic brain injury .

  6. Low arousal theory - Wikipedia

    en.wikipedia.org/wiki/Low_arousal_theory

    The low arousal theory is a psychological theory explaining that people with attention deficit hyperactivity disorder (ADHD) and antisocial personality disorder [1] [page needed] seek self-stimulation by excessive activity in order to transcend their state of abnormally low arousal.

  7. Models of abnormality - Wikipedia

    en.wikipedia.org/wiki/Models_of_abnormality

    The biological model of abnormality (the only model not based on psychological principles) is based on the assumptions that if the brain, neuroanatomy and related biochemicals are all physical entities and work together to mediate psychological processes, then treating any mental abnormality must be physical/biological.