Social solidaritiesGrahamCrowauthorThis study explores the concept of social solidarity by elaborating on five propositions about mutually supportive social relationships. These five propositions are that social solidarity was a key issue for the founding figures of the discipline of sociology in the 19th century; that this sociological interest in social solidarity has continued down to the present day; that in the development of sociological analyses of social solidarity there has also been fruitful engagement with neighbouring disciplines; that social solidarity can sometimes be associated with social problems as well as with desirable social outcomes; and that the nature and causes of social solidarity are matters of important on-going debate.2010-01Article