Psychological torture or mental torture or emotional torture is a type of torture that relies primarily on psychological effects, and only secondarily on any physical harm inflicted. Although not all psychological torture involves the use of physical violence, there is a continuum between psychological torture and physical torture. The two are often used in conjunction with one another and often overlap in practice, with the fear and pain induced by physical torture often resulting in long-term psychological effects, and many forms of psychological torture involving some form of pain or coercion.