Automatic drawing (distinguished from drawn expression of mediums) was developed by the surrealists. as a means of expressing the subconscious. In automatic drawing, the hand is allowed to move 'randomly' across the paper. In applying chance and accident to mark-making, drawing is to a large extent freed of rational control. Hence the drawing produced may be attributed in part to the subconscious and may reveal something of the psyche, which would otherwise be repressed. Examples of automatic drawing were produced by mediums and practitioners of the psychic arts. It was thought by some Spiritualists to be a spirit control that was producing the drawing whilst physically taking control of the medium's body.