Migration network theory addresses the cumulative causation of migration as a result of reduced social, economic, and emotional costs of migration pursuant to the formation of migration networks. Because it introduces a sociological dimension, network theory improves the mechanical and...

Book-length and comparative study of ethnic economies, including the origins of the concept, size and prevalence of ethnic economies, class and ethnic resources, informal economy, and forms of disadvantage. Only chapters by Ivan Light are included

Book-length study of black, Chinese, and Japanese self-employment in northern cities of the United States, 1880-1940, Self-employment is explained as a product of moral communities resulting from migration networks

18th Century Protestants were less universalistic than Max Weber thought. In effect, the Protestant sectarians had created an ethnic economy within which they gave preference to co-religionists. This was often a justifiable business decision because co-ethnics were known and trusted