to 23% in 1923. These shifts in the labor force led to changes in the attitudes towards women at work, allowing for the revolution which resulted in women becoming career and education oriented. In the 1970s, many female academics, including scientists, avoided having children. Throughout the 1980s, institutions tried to equalize conditions for men and women in the workplace. Even so, the inequalities at home hampered women's opportunities: professional women were still generally considered responsible for domestic labor and child care, which limited the time and energy they could devote to their careers. Until the early 20th century, U.S. women's colleges required their women faculty members to remain single, on the grounds that a woman could not carry on two full-time professions at once. According to Schiebinger, "Being a scientist and a wife and a mother is a burden in society that expects women more often than men to put family ahead of career." (p. 93). Movements advocate equality of opportunity for both sexes and equal rights irrespective of gender. Through a combination of economic changes and the efforts of the feminist movement, in recent decades women in many societies have gained access to careers beyond the traditional homemaker. Despite these advances, modern women in Western society still face challenges in the workplace as well as with the topics of education, violence, health care, politics, and motherhood, and others. Sexism can be a main concern and barrier for women almost anywhere, though its forms, perception, and gravity vary between societies and social classes. There has been an increase in the endorsement of egalitarian gender roles in the home by both women and men. Although a greater number of women are seeking higher education, their salaries are often less than those of men. CBS News said in 2005 that in the United States women who are ages 30 to 44 and hold a university degree make 62% of what similarly qualified men do, a lower rate than in all but three of the 19 countries for which numbers are available. Some Western nations with greater inequality in pay are Germany, New Zealand and Switzerland. Violence against women The UN Declaration on the Elimination of Violence against Women defines "violence against women" as: It identifies three forms of such violence: that which occurs in the family, that which occurs within the general community, and that which is perpetrated or condoned by the