Best remembered for documenting the first recognized "out-of-body experiences" in his 1970s work Journeys Out of the Body, this consciousness researcher and writer established a Virginia-based non-profit organization called The Monroe Institute.
He studied science, engineering, and English at The Ohio State University and began his famous sleep-learning and altered consciousness experiments in the 1950s.
A decade after the publication of Journeys Out of the Body, he penned a second work on consciousness, titled Far Journeys. This was followed in 1994 by a third book, Ultimate Journey.
He divorced his first wife, Jeanette, after less than two years of marriage and subsequently married Mary Ashworth, who became the mother of his only daughter. In the late 1960s, he married his third wife, Nancy Penn Honeycutt.
Like Monroe, psychologist and author Daniel Goleman (best known for his research on Emotional Intelligence) studied human consciousness.