social exchange
According to social exchange theory, people are always giving and getting things from each other. It assumes that people "trade" what they put into a relationship, like time, emotional energy, or effort, for what they get back, like love, support, or friendship. People are always weighing three main things: (1) the ratio of costs to benefits, (2) their overall satisfaction (how well the relationship meets or falls short of expectations), and (3) the availability of alternativ
