An apparatus for use in the conduct of cognitive behaviour therapy comprises a surround vision system, sets of recorded scenes each set relating to the same theme, each set representing a different level of difficulty to the individual receiving therapy in dealing with the theme； a controller for controlling the displaying images of a set on the screens of the surround vision system； and a command device. The command device is adapted to communicate with the controller and is used by a person overseeing the delivery of therapy to the individual or by the individual receiving therapy for controlling the display of scenes on the surround vision apparatus.
