More recent research has focused on emotional contagion in work groups, examining features that can contribute to the development and maintenance of between-person similarity of feelings at the group level. The presence of a consistent level of well-being in a group of people might arise from three kind of source. First, all group members might be exposed to the same inputs from the environment (“vitamins” in the present framework). Second, individuals might discuss together local issues and their feelings about them, influencing each other along the lines illustrated above. Some of those influences might derive from processes of social comparison; these are examined later in the chapter. Third, direct emotional contagion might take place among them.