Emotions, in Psychologg, one of the three great classes of mental states. An emotion is analysable into a set of feelings (pleasant, painful, or neutral) combined with presentations, popularly called ideas. The feelings impel action towards or away from the objects these represent, so that emotion is (in the developed mind) the link between thought and volition. Emotions are thus motives to action, and it is in proportion to his habit of subordinating his emotion to the regulative faculty that a man ranks higher or lower in the scale of reasonable beings. By their physical effects the emotions are classed as pleasurable or painful.