In recent years, political, religious, and other special-interest groups have waged war on behavioral and social research projects that threaten their interests and values. They have hounded researchers out of universities, cut off their funding through congressional and state legislative pressure, and harassed them with public demonstrations and picketing, all in the hope of forcing them to abandon their research. Morton Hunt gives us the first serious overview of this threat to behavioral and social science research. He illustrates precisely how scientific research has been subjected to political attack. The New Know-Nothings illustrates this phenomenon using in-depth case histories and background discussions of the conflicting social forces involved. It considers the prevalence of each form of opposition to research, using interviews with expert observers in the sciences and government. Hunt reviews the nature-nurture debate, biological contributions to gender differences, conservative opposition to sex research in the schools, the debate over the controlled drinking approach to alcoholism, animal rights versus scientists' rights to use animals in research, the controversy over day care, anthropological research needs versus the Native American repatriation of remains, and other cases. He argues that beyond the specific projects targeted, the most important thing threatened is the social valuation of scientific freedom. It will be of interest to behavioral scientists and scientists in general, readers interested in the sciences and in social issues, and government policymakers.