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.

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.

Tygert Burton "Ty" Pennington (born Gary Tygert Burton on October 19, 1964, in Atlanta, Georgia) is an American television host, model, philanthropist and carpenter. He is most notable for having been the host of Extreme Makeover: Home Edition which aired on ABC in the US until its cancellation in December 2011 and will return with specials and Ty's Great British Adventure, which airs on UKTV home in the UK and TV LAND. Previously, Pennington was a carpenter on the TLC reality show Trading Spaces. Currently, he manufactures a line of furniture with the Howard Miller Company.

Tygert Pennington was born on October 19, 1964, as Gary Tygert Burton, the second son of school psychologist Yvonne Burton. Yvonne separated from Ty's father when he and his older brother Wynn were very young, and spent several years as a single parent before she eventually remarried. Her new husband adopted both boys, giving them both the Pennington name. Pennington grew up in Atlanta, Georgia, primarily in his hometown of Marietta. He was also diagnosed with ADHD when he was 17.