Many women at the nation's most elite colleges say they have already decided that they will put aside their careers in favor of raising children. Though some of these students are not planning to have children and some hope to have a family and work full time, many others, like Ms. Liu, say they will happily play a traditional female role, with motherhood their main commitment.

Much attention has been focused on career women who leave the work force to rear children. What seems to be changing is that while many women in college two or three decades ago expected to have full-time careers, their daughters, while still in college, say they have already decided to suspend or end their careers when they have children.

"At the height of the women's movement and shortly thereafter, women were much more firm in their expectation that they could somehow combine full-time work with child rearing," said Cynthia E. Russett, a professor of American history who has taught at Yale since 1967. "The women today are, in effect, turning realistic."

Dr. Russett is among more than a dozen faculty members and administrators at the most exclusive institutions who have been on campus for decades and who said in interviews that they had noticed the changing attitude.