Russell Alan Barkley (born December 27, 1949) is a retired clinical psychologist who was a clinical professor of psychiatry at the VCU Medical Center until 2022 and an author of books on attention-deficit hyperactivity disorder (ADHD). Involved in research since 1973 and a licensed psychologist since 1977, he is an expert on ADHD and has devoted much of his scientific career to studying ADHD and related fields like childhood defiance. He proposed to change the name of sluggish cognitive tempo (SCT) to concentration deficit disorder (CDD). More information...
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