A seventh edition of The American Class Structure in an Age of Growing Inequality (Pine Forge Press) by Professor of Sociology Dennis Gilbert was published in January, 2008. In the book Gilbert analyzes trends in income, wealth, earnings, occupation, housing, child rearing, social mobility and politics to reveal a consistent pattern of growing social inequality in the United States since the early 1970s. Why, Gilbert asks, is this happening? His answer rests on factors as varied as globalization and shifting patterns of American family life.