The Expression of the Emotions in Man and Animals in the James-Lange theory of emotions, James develops Darwin's emphasis on the physical aspects, including the visceral (autonomically mediated) components of emotion. In Walter Cannon's "Bodily Changes in Pain, Hunger, Fear and Rage" (1915), Cannon introduces the famous phrase "fight or flight response", formulating emotions in terms of strategies for interpersonal behaviour. More recent psychological theories of emotion have been set out in the Papez-Maclean hypothesis and the Two factor theory of emotion. On 24 January 1895, James Crichton-Browne delivered a notable lecture in Dumfries, Scotland "On Emotional Expression", presenting some of his reservations about Darwin's views. Crichton-Browne argued for
Sociology of emotions actions that feed-back negatively on this self-destructive situation. The social management of emotions might be the fundamental dynamics of social cooperation and conflict around resources, complexity, conflict and moral life. It is well-established sociological fact that expression and feeling of the emotion of anger, for example, is strongly discouraged (repressed) in girls and women in many cultures, while fear is discouraged in boys and men. Some cultures and sub-cultures encourage or discourage happiness, sadness, jealousy, excitedness, and many other emotions. The free expression of the emotion of disgust is considered socially unacceptable in many countries. Sociologist Randall Collins has stated