Noun the theory that physical and psychological phenomena are ultimately explainable only in terms of a creative and interpretive mind. Mentalism is a performing art in which its practitioners, known as mentalists, seem to demonstrate highly developed mental or intuitive abilities. The performances may appear to include hypnosis, telepathy, clairvoyance, divination, precognition, psychokinesis, mediumship, mind control, feats of memory, deduction, and quick mathematics. Mentalists perform a theatrical act that includes effects that may appear to employ psychic or supernatural forces, but are actually achieved by ordinary means of conjuring, natural human abilities (i.e., reading body language, refined intuition, subliminal communication, emotional intelligence), and an understanding deep understanding of the key principles of human psychology or other behavioral sciences.
Mentalism is a performing art that focuses on the mind and imagination. When done correctly, mentalism can make the artist appear to possess extraordinary powers or incredible mental prowess. Mentalism isn't magic tricks with mental themes; that's a style of magic called mental magic. On the other hand, mentalism is performance art.
The artist (mentalist) entertains his audience with an act based on fascinating mind-related skills.