MacIver, Robert Morrison (məkēˈvər, –kĪˈvər) [key], 1882–1970, Scottish-American sociologist, b. Scotland, grad. Univ. of Edinburgh and Oxford. He began teaching at Columbia Univ. in 1927. His books, in which he discusses the complexities of social and political organization, include Community: A Sociological Study (1917), Society: Its Structure and Changes (1931), The Web of Government (1947), The Pursuit of Happiness (1955), Life: Its Dimensions and Its Bounds (1960), The Challenge of the Passing Years (1962), Social Causation (1964), The Prevention and Control of Delinquency (1966), Politics & Society (1969), and On Community, Society, and Power; Selected Writings, ed. by L. Bramson (1970).