Mr. Wilson, a University of Chicago sociologist, finds that both liberal and conservative analyses of these issues have failed to accord sufficient importance to the role played by structural changes in the United States economy and related changes in the social fabric of inner cities. He describes how liberal architects of the Great Society acted as though various education, training and community development programs would themselves shrink poverty dramatically, almost independent of economic trends. Yet in virtually every year that unemployment has risen and wages have fallen, poverty has grown worse; when the economy has picked up, poverty has lessened. Furthermore, recent research has established that when the economy turns down and unemployment increases, black men are hurt most. It should be no surprise that when unemployment rates doubled between the late 1960's and the 1980's, poverty did not diminish, confounding the hopes of Great Society planners.