Russell Barkley is a prominent clinical psychologist known for his extensive research and contributions to the understanding of Attention-Deficit/Hyperactivity Disorder (ADHD). His work focuses on the nature, assessment, and treatment of ADHD, highlighting the disorder's impact on executive functioning and self-regulation. Barkley has developed key models that explain how ADHD affects behavior and cognitive processes, making him a central figure in the field of abnormal psychology as it relates to this condition.
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