Charles Tart was born in the United States in 1937. He received his Ph. D. in psychology in 1963 at the University of North Carolina. Tart also received training at Stanford University. He was one of the founders of transpersonal psychology.
He became one of the most preeminent researchers of unusual states of awareness after the publication of Altered States of Consciousness (1969), the first book that he worked on. It was one of the first books to examine entering lucid dreaming through dream consciousness. The book received popularity when the use LSD and Marijuana were often viewed as vehicles to elevated consciousness, and the book even describes the use of chemical substances in the context of lucid dreaming states.