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Large, high quality research has found small differences in the brain between ADHD and non-ADHD patients. [1] [15] Jonathan Leo and David Cohen, critics who reject the characterization of ADHD as a disorder, contended in 2003 and 2004 that the controls for stimulant medication usage were inadequate in some lobar volumetric studies, which makes it impossible to determine whether ADHD itself or ...
Attention deficit hyperactivity disorder (ADHD) [1] is a neurodevelopmental disorder characterized by executive dysfunction occasioning symptoms of inattention, hyperactivity, impulsivity and emotional dysregulation that are excessive and pervasive, impairing in multiple contexts, and developmentally-inappropriate.
This same review reported a global combined prevalence of ADHD of 10% in boys and 5% in girls. [58] While the male-to-female ratio of ADHD diagnoses in childhood is about 2.3:1 in children, it approaches 1.5:1 or lower in adulthood. [15] [9] This is consistent with research revealing underdiagnosis of ADHD in females during childhood. [9]
The hypothesis notes that humans spent most of their evolutionary history in hunter-gatherer societies, and it argues that ADHD represents a lack of adaptation to farming societies. Hartmann first developed the idea as a mental model after his own son was diagnosed with ADHD, stating, "It's not hard science, and was never intended to be." [1]
The Conners Comprehensive Behaviour Rating Scale (CBRS), is a tool used to gain a better understanding of academic, behavioural and social issues that are seen in young children between ages 6 to 18 years old.
Among boys and girls who had experienced sexual intercourse, the proportion of girls and boys who had recently had sex and were regularly sexually active was the same. [6] Those conducting the study speculated that fewer girls say they have ever had sex because girls viewed teenage parenthood as more of a problem than boys.
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Cognitive disengagement syndrome (CDS) is a syndrome characterized by developmentally inappropriate, impairing, and persistent levels of decoupled attentional processing from the ongoing external context and resultant hypoactivity.
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