or blame for the success or failure of the exchange. Following Weiner (1985) affect theory of social exchange extrapolates that the combinations of stability and uncontrollability elicit different emotions. In social exchange, social connections can be sources of stability and controllability. For example, if an exchange partner is perceived as a stable source of positive feelings, and the exchange partner has control in the acts that elicit those positive feelings, this will strengthen affective attachment. Therefore, affect theory of social exchange proposes that stable and controllable sources of positive feelings (i.e. pleasantness, pride, gratitude) will elicit affective attachments while stable and uncontrollable sources of negative feelings (i.e. unpleasantness, shame, anger) will elicit affective detachment. Through these emotional processes, networks can develop group properties Repeated exchanges allow a network to evolve into a group. Affect theory highlights the contributions of emotions in producing group properties. Successful interactions generate positive feelings for the involved individuals, which motivates them to interact with the same partners in the future. As exchanges repeat, the strong relationships become visible to other parties, making salient their role as a group and helping to generate a group identity that continues to bind the partners together in a network. Affect theory predicts that networks of negotiated and reciprocal exchange will tend to promote stronger relational ties within partners; productive or generalized exchange will promote stronger network or group-level ties. See also References Further reading Ekeh, Peter Palmer. (1974). Social Exchange Theory : the two Traditions. London: Heinemann Educational. Stolte, John F. and Emerson, Richard M. (1977) "Structural Inequality: Position and Power in Network Structures." pp. 117–138 in Robert Hamblin and John Kunkel (eds.) Behavioral Theory in Sociology. New Brunswick, N.J.: Transaction Press. External links "Theories Used in Research" Value (ethics) Sociological theories Interpersonal communication Sociological terminology Social status