No apology is offered for this study because of the uncontrolled conditions of introspection. Emotions are involuntary processes and consequently do not lend themselves to voluntary control necessary for laboratory technique. The emotion springs from an antecedent complex combined with a present idea. The fact that anger does not develop from a single experience but is a predetermined consciousness usually cumulative in character, makes voluntary origin difficult. Even when the individual is aware of the antecedent which tends to give rise to anger, the voluntary combination with a present idea is unsuccessful. A further difficulty in introspection is the tendency of the emotion to disappear as a result of the act of introspection. It occurs frequently in the data that a further development of the emotion is entirely cut off by introspection. However, attention to the situation giving rise to anger frequently reinstates the emotion, if the feeling background is intense enough. It was necessary to instruct the observers to allow their emotions to run their usual course and note the facts of behavior at convenient times. The purpose of this study is to investigate the behavior of consciousness in the development, expression and disappearance of anger. The observers were asked to direct their observation especially to the behavior side of consciousness. It is believed, that regardless of the necessary uncontrolled conditions of introspection, that a systematic observation of both mild and intense experiences of anger by a number of observers over an extended period of time will add to a better comprehension of the functional character of this one of the fundamental emotions. ------------------------------------------------------------------------ CHAPTER ONE MENTAL SITUATION STIMULATING ANGER ------------------------------------------------------------------------ Professor Titchener (19) states concerning emotions in general three essential factors for their formation. First, a series of ideas shall be interrupted by a vivid feeling; second, the feeling shall mirror a situation or incident in the outside world; and third, the feeling shall be enriched by organic sensations created by the course of bodily adjustment to the situation. It has been well agreed from casual introspection that the stimulus to an emotion is a total mental situation or predicament. It is evidently necessary in the psychology of the emotions that each emotion should be studied in connection with its predetermining mental situation giving rise to it. Anger because of its slowness to develop, lends itself more readily to a study of the situation from which it arises, than some other emotions.