Attention deficit hyperactivity disorder (ADHD) is a developmental disorder. It is characterized primarily by "the co-existence of attentional problems and hyperactivity, with each behavior occurring infrequently alone" and symptoms starting before seven years of age.

ADHD is the most commonly studied and diagnosed psychiatric disorder in children, affecting about 3 to 5 percent of children globally and diagnosed in about 2 to 16 percent of school-aged children. It is a chronic disorder with 30 to 50 percent of those individuals diagnosed in childhood continuing to have symptoms into adulthood. Adolescents and adults with ADHD tend to develop coping mechanisms to compensate for some or all of their impairments. It is estimated that 4.7 percent of American adults live with ADHD. Standardized rating scales such as the World Health Organization's Adult ADHD Self-Report Scale can be used for ADHD screening and assessment of the disorder's symptoms' severity.

ADHD is diagnosed two to four times more frequently in boys than in girls, though studies suggest this discrepancy may be partially due to subjective bias of referring teachers.ADHD management usually involves some combination of medications, behavior modifications, lifestyle changes, and counseling. Its symptoms can be difficult to differentiate from other disorders, increasing the likelihood that the diagnosis of ADHD will be missed. In addition, most clinicians have not received formal training in the assessment and treatment of ADHD, in particular in adult patients.

Kendrick Lamar Duckworth (born June 17, 1987), simply known as Kendrick Lamar, is an American rapper and songwriter from Compton, California currently signed to Top Dawg, Aftermath and Interscope. He first gained major attention after the release of his 2010 mixtape Overly Dedicated. In 2011, his album Section.80, released exclusively through iTunes, instantly ranked as one of the top digital hip hop releases of the year. Lamar has amassed a large internet following, is a member of hip hop collective Black Hippy, along with Jay Rock, Schoolboy Q and Ab-Soul, and has worked with Snoop Dogg, Dr. Dre, Wiz Khalifa, Game, Drake, Busta Rhymes and Tech N9ne among other popular artists.

Thom Hartmann (born May 7, 1951) is an American radio host, author, former psychotherapist and entrepreneur, and progressive political commentator. His nationally-syndicated radio show, The Thom Hartmann Program, airs in the United States and has 2.75 million listeners a week. In 2008, 2009, and 2010, Talkers Magazine named Hartmann the tenth most important talk show host in America, and number 8 in 2011 defining him as the most important liberal host for four years in a row (the ones above Hartmann are conservatives).

Hartmann's article "Talking Back To Talk Radio" became part of the original business plan of Air America Radio. He replaced Al Franken on the network on February 19, 2007. On March 1, 2009, Hartmann moved syndication of his show from Air America to the former Jones Network, now owned by Dial Global (which also syndicates Neal Boortz, Ed Schultz, Michael Smerconish, Bill Press, Stephanie Miller, and Clark Howard). In the summer of 2009, his program began to also be offered to nonprofit stations via the Pacifica Radio network, and some community/nonprofit stations in the US are also carrying his show. The radio program is also simulcast as a TV program by Free Speech TV on Dish Network and DirecTV. Additionally, he stars in a one-hour daily TV show which his production company records at the studios of and licenses to the RT news network, The Big Picture; that TV show is also syndicated by Free Speech TV and carried on both Dish Network and local cable TV stations.

Russell A. Barkley, Ph.D., is a Research Professor in the Department of Psychiatry at the State University of New York Upstate Medical University. Involved in research since 1973 and a licensed psychologist since 1977, he is an expert on attention-deficit hyperactivity disorder (ADHD) and has devoted much of his scientific career to studying ADHD and related problems in children.

He received his first citation for his clinical studies on the effects of medication on ADHD children in 1977; his research interests also include childhood defiance. Author of 15 books and more than 180 scientific papers, Barkley edits The ADHD Report and over time has taken on an increasing role in educating the general public about ADHD. According to the Web of Science, his articles have been cited over 9000 times, leading to an h-index of over 55.