Leila Rosen Young, 43, a senior researcher at the Center for Population Research at Georgetown University, died of cancer March 30 at Suburban Hospital. She lived in Bethesda.

Dr. Young was born in Pittsburgh and grew up in Wheeling, W.Va. She graduated from the University of California at Berkeley. She earned a master's degree in education from Stanford University. She earned a master's and a doctorate in sociology from the State University of New York at Stonybrook.

She moved to the Washington area in 1972 and became an assistant professor of sociology at Georgetown. She taught sociology at the University of Maryland before joining the Center for Population Research in 1982. She retired for reasons of health in 1983.

She was a member of Sociologists for Women and Society, and of the Society for the Study of Social Programs. She had served on the board of the American Sociological Association's section on sex and gender. She also was a member of Bethel Congregation in Bethesda.

Dr. Young is survived by her husband, Dr. Joseph L. Young, and two daughters, Michal, and Avigayl, all of Bethesda; her mother, Sara Rosen Kaufman of Oceanside, Calif., and two sisters, Dr. Sherry Rosen of Princeton, N.J., and Roberta Goldstein of Culver City, Calif.