An Introduction to Attention Deficit Hyperactivity Disorder Description Attention Deficit Hyperactivity Disorder (ADHD) involves three sub-types in: (1) Predominantly Inattentive, (2) Predominantly Hyperactive-Impulsive, and (3) Combined Type cases. Male children are more apt to present ADHD of some type than female children in a ratio of 2:1 girls to 9:1 boys. Children with ADHD make up about 3.5% of the Canadian population with a global prevalence of approximately 5% (Sassi, 2010, p.29). A third or more of ADHD cases not treated in childhood will produce results in adults that include academic difficulties, unstable relationships, social isolation, depression or substance abuse. Diagnostic Criteria Wilmshurst (2005) explained an ADHD...The end:
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