Christopher Michael Langan (born March 25, 1952) is an American horse rancher and autodidact who has been reported to score very highly on IQ tests. Langan's IQ was estimated on ABC's 20/20 to be between 195 and 210, and in 1999 he was described by some journalists as "the smartest man in America" or "in the world". Biography Langan was born in 1952 in San Francisco, California. His mother, Mary Langan-Hansen (née Chappelle, 1932–2014), was the daughter of a wealthy shipping executive but was cut off from her family. Langan's biological father left before he was born, and is said to have died in Mexico. Langan's mother married three more times, and had a son by each husband. Her second husband was murdered, and her third died by suicide. Langan grew up with the fourth husband Jack Langan, who has been described as a "failed journalist" who went on drinking sprees and disappeared from the house, locked the kitchen cabinets so the four boys could not get to the food in them and used a bullwhip as a disciplinary measure. The family was very poor; Langan recalls that they all had only one set of clothes each. The family moved around, living for a while in a teepee on an Indian reservation, then later in Virginia City, Nevada. When the children were in grade school, the family moved to Bozeman, Montana, where Langan spent most of his childhood. During elementary school, Langan repeatedly skipped grades, and was bullied by his peers. He claims to have been beaten by his stepfather, Jack Langan, who denies this. At age 12, Langan began weight training, which he says was motivated by the desire to fight back against bullies. He eventually ejected his stepfather from the household. Langan attended high school, but spent his last years engaged mostly in independent study. He did so after his teachers denied his request for more challenging material. According to Langan, he began teaching himself "advanced math, physics, philosophy, Latin, and Greek". According to Cynthia McFadden from ABC's 20/20, he earned a perfect score on the SAT (pre-1995 scale) despite taking a nap during the test. Langan was offered two full scholarships, one to Reed College in Oregon and the other to the University of Chicago. He chose the former, which he later called "a big mistake". He had a "real case of culture shock" in the unfamiliar