Recent surveys show that more than half of American entrepreneurs share ownership in their business startups rather than going it alone. Yet the media and many scholars continue to perpetuate the myth of the lone visionary who single-handedly revolutionizes the marketplace. In The Entrepreneurial Group, Martin Ruef shatters this myth, demonstrating that teams, not individuals, are the leading force behind entrepreneurial startups. This is the first book to provide an in-depth sociological analysis of entrepreneurial groups, and to put forward a theoretical framework for understanding activities and outcomes within them. 29 line illus. 46 tables.