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Russell A. Barkley’s "Attention-Deficit Hyperactivity Disorder: A Handbook for Diagnosis and Treatment" provides a comprehensive, evidence-based guide to the neurobiological, diagnostic, and therapeutic aspects of ADHD across the lifespan. It characterizes the disorder as a dysfunction of executive functioning and self-regulation, advocating for a combination of medication and behavioral interventions [10, 23, 24]. You can find more information about this text through professional clinical resources.