PSYCH 2AP3 Lecture Notes - Dsm-5, Twin, Conscientiousness

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First described in 1902, now the most researched childhood disorder. Incidence: how many new cases in some time period. Prevalence: how many existing cases in some time period. Cases per 100 and 10000 usually used. Clinical estimates: how many appear in clinics with disorders, most often used but inaccurate. Community estimates: expensive and time consuming, but most accurate. Phi starts in nursery or primary school, more common in boys. Pi starts in primary or high school, equally common. 2x more common in boys than girls, more common among teens. Account for about 50% of childhood psychiatric patients, 30% increase in diagnoses since 97". Only half are only patients with adhd. Attention good selective attention and orienting in space (paying attention) but poor arousal. Go no go test and stop test. Executive functions- poor response inhibition and working memory especially visual/spatial. Even smaller right prefrontal cortex than usual smallness.

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