CHADD, the National Resource on ADHD, concisely summarizes the executive function theories of two leading researchers: Thomas Brown and Russell Barkley. This web page provides each researcher’s definition of executive function, as well as a breakdown of its components, its impact on attention, and the link between executive function and ADHD. This specific page is part of a larger site that provides information and resources about attention issues.
![An outline of a brain in the sky with confusing yellow road signs.](https://www.landmarkoutreach.org/wp-content/uploads/ISS_4266_01295-e1489070516554.jpg)