The outcome of looking at things in a new perspective can produce new information. The increased entry of women into the workplace beginning in the 20th century has affected gender roles and the division of labor within households. Sociologist Arlie Russell Hochschild in "The Second Shift" and "The Time Bind" presents evidence that in two-career couples, men and women, on average, spend about equal amounts of time working, but women still spend more time on housework. Feminist writer Cathy Young responds to Hochschild's assertions by arguing that, in some cases, women may prevent the equal participation of men in housework and parenting. Economists Mark Aguiar and Erik Hurst calculate that the amount of time spent on housework by women since the 1960s has dropped considerably. Leisure for both men and women has risen significantly and by about the same amount for both sexes. Jeremy Greenwood, Ananth Seshadri and Mehmet Yorukoglu argue that the introduction of modern appliances into the home has allowed women to enter the work force. Feminist criticisms of men's contributions to child care and domestic labor in the Western middle class are typically centered around the idea that it is unfair for women to be expected to perform more than half of a household's domestic work and child care when both members of the relationship perform an equal share of work outside the home. Several studies provide statistical evidence that the financial income of married men does not affect their rate of attending to household duties. In "Dubious Conceptions", Kristin Luker discusses the effect of feminism on teenage women's choices to bear children, both in and out of wedlock. She says that as childbearing out of wedlock has become more socially acceptable, young women, especially poor young women, while not bearing children at a higher rate than in the 1950s, now see less of a reason to get married before having a child. Her explanation for this is that the economic prospects for poor men are slim, hence poor women have a low chance of finding a husband who will be able to provide reliable financial support due to the rise of unemployment from more workers on the market, from just men to women and men. Some studies have suggested that both men and women perceive feminism as being incompatible with romance. However, a recent survey of U.S. undergraduates and older adults found that feminism actually has a positive impact on relationship health for women and sexual satisfaction for men, and found no support for negative stereotypes of feminists. Virginia Satir said the need for relationship education emerged from shifting gender roles as women gained greater rights and freedoms during the 20th century: Feminist theology is a movement that reconsiders the traditions, practices, scriptures, and theologies of religions from a feminist perspective.