Dr. Nigg’s research focuses on the underlying mechanisms and causes in attention deficit hyperactivity disorder (ADHD) across the lifespan. The primary focus is on cognitive and neuropsychological mechanisms. However, studies of genetics, family dynamics, personality and temperament, environmental toxins, and neuroimaging of ADHD are also ongoing.
Joel Nigg
Director, Division of Psychology
Oregon Health and Science University
From this contributor
Insights for autism from attention deficit hyperactivity disorder
Autism and attention deficit hyperactivity disorder show genetic and neurobiological overlap, which may provide clues to the origin of both disorders, says Joel Nigg.
Insights for autism from attention deficit hyperactivity disorder
By
Joel Nigg
7 February 2012 | 8 min read
Explore more from The Transmitter
Michael Shadlen explains how theory of mind ushers nonconscious thoughts into consciousness
All of our thoughts, mostly nonconscious, are interrogations of the world, Shadlen says. The opportunity to report our answers to ourselves or others brings a thought into conscious awareness.
Michael Shadlen explains how theory of mind ushers nonconscious thoughts into consciousness
All of our thoughts, mostly nonconscious, are interrogations of the world, Shadlen says. The opportunity to report our answers to ourselves or others brings a thought into conscious awareness.
By
Paul Middlebrooks
28 January 2026 | 1 min read
‘Peer review is our strength’: Q&A with Walter Koroshetz, former NINDS director
In his first week off the job, the former National Institute of Neurological Disorders and Stroke director urges U.S. scientists to remain optimistic about the future of neuroscience research, even if the executive branch “may not value what we do.”
‘Peer review is our strength’: Q&A with Walter Koroshetz, former NINDS director
In his first week off the job, the former National Institute of Neurological Disorders and Stroke director urges U.S. scientists to remain optimistic about the future of neuroscience research, even if the executive branch “may not value what we do.”
By
Angie Voyles Askham
27 January 2026 | 7 min read
Viral remnant in chimpanzees silences brain gene humans still use
The retroviral insert appears to inadvertently switch off a gene involved in brain development.
Viral remnant in chimpanzees silences brain gene humans still use
The retroviral insert appears to inadvertently switch off a gene involved in brain development.
By
Siddhant Pusdekar
27 January 2026 | 5 min read