Social change refers to an alteration in the social order of a society. It may refer to the notion of social progress or sociocultural evolution, the philosophical idea that society moves forward by dialectical or evolutionary means. It may refer to a paradigmatic change in the socio-economic structure, for instance a shift away from feudalism and towards capitalism. Accordingly it may also refer to social revolution, such as the Socialist revolution presented in Marxism, or to other social movements, such as Women's suffrage or the Civil rights movement. Social change may be driven by cultural, religious, economic, scientific or technological forces.

More generally, social change may include changes in nature, social institutions, social behaviours or social relations.

Basically, change comes from two sources. One source is random or unique factors such as climate, weather, or the presence of specific groups of people. Another source is systematic factors. For example, successful development has the same general requirements, such as a stable and flexible government, enough free and available resources, a diverse social organization of society, and a stable and flexible governmental system. So, on the whole, social change is usually a combination of systematic factors along with some random or unique factors.

Ami Klin, PhD, born in Brazil to Holocaust survivors, is the first chief of autism and related disorders at the Marcus Autism Center, a wholly owned subsidiary of Children’s Healthcare of Atlanta. Klin will also be a Georgia Research Alliance Eminent Scholar at Emory University and director of the Division of Autism and Related Developmental Disabilities in the Department of Pediatrics at Emory University School of Medicine.

Previously, he was an autism and Asperger syndrome researcher and a Harris Professor of Child Psychology and Psychiatry at the Yale Child Study Center. Klin has worked at the Center since 1989. He obtained B.A. degrees in Psychology, and Political Science and History, from the Hebrew University of Jerusalem, Israel in 1983 and his Ph.D. in Psychology at the University of London in 1988. He is board-certified in Clinical Psychology.

Klin has received numerous professional and academic awards and recognition including Researcher of the Year from Business New Haven in collaboration with Yale, Pearl H. Rieger Award for Excellence in Clinical Science from the Rush Medical Center in Chicago, IL, and the Robert McKenzie Prize for Outstanding Ph.D. Thesis from the University of London.

Erick Erickson (born June 3, 1975), also known as Erick-Woods Erickson, is a politically conservative American blogger and managing editor of the blog site RedState.com. In 2010, he became a political contributor for CNN's John King, USA. Erickson also hosts a weekday radio show on WSB (AM) from 6 P.M.–9 P.M.

Erickson was born in Jackson, Louisiana, moved to Dubai, United Arab Emirates when he was 5 and returned to Jackson when he was 15. Erickson attended the American School of Dubai, previously known as the Jumeirah American School. Erickson received a bachelor’s degree from Mercer University in Macon, Georgia, and a law degree at Mercer’s Walter F. George School of Law and is an inactive member in good standing of the State Bar of Georgia.

Erickson was an elected Republican member of Macon’s city council, but resigned partway through his first term to pursue a job with WSB radio in Atlanta . While he was in office, Macon police officers considered forming a union. To counter the formation of the labor union, Erickson urged that the police department be dissolved.

Peter Joseph Yorn (born July 27, 1974, Montville, New Jersey, United States) is an American singer-songwriter and guitarist who first gained international recognition after his debut record, Musicforthemorningafter, was released to critical acclaim in 2001.

Yorn's father is a retired dentist and his mother is a former school teacher and real estate agent. His brother Rick is a major talent manager in Hollywood, while his brother Kevin is an entertainment lawyer who represents stars such as Scarlett Johansson. He grew up in Montville, New Jersey, where he attended Montville Township High School.

Yorn was encouraged enough to maintain a focus on music while attending Syracuse University (class of 1996) where he was a major in the department of Communication and Rhetorical Studies and a member of the Delta Upsilon Fraternity. After graduating, Yorn moved to Los Angeles, where he began to attract a following with his performances at Cafe Largo. He was signed to Columbia records in 1999. Shortly after, film producer Bradley Thomas (Kingpin & There's Something About Mary) liked Yorn's act enough to request Yorn send him some rough demos for possible inclusion in the Farrelly Brothers' film Me, Myself and Irene. Soon after, Yorn landed a job scoring all of the music to the film and also contributed the songs "Strange Condition" and "Just Another" to the film and its soundtrack.