Bonnie Miller-McLemore is a professor of religion, psychology and culture at Vanderbilt University Divinity School in Nashville, Tenn., and co-author of From Culture Wars to Common Ground: Religion and the American Family Debate (2000). She teaches courses on women and religion, theology and science, as well as parenting, families and children.

Theodore Caplow is a professor of sociology at the University of Virginia in Charlotte. He tracks social changes in families.

David McCarthy is a professor of theology at Mount St. Mary’s College in Emmitsburg, Md. He wrote the article “Homosexuality and the Practice of Marriage” for the journal Modern Theology.

Cynthia S. W. Crysdale is associate professor for the School of Theology and Religious Studies at Sewanee: The University of the South. She wrote “Christian Marriage and Homosexual Monogamy” for the book Our Selves, Our Souls and Bodies: Sexuality and the Household of God (Crowley Press, 1996).

Carol Sanger teaches family law at Columbia University Law School in New York City.

Barbara A. Babb is a family law professor at the University of Baltimore in Maryland. She has spoken on the legal issues involved with same-sex marriages.

Nancy Cott is a history professor at Harvard and author of Public Vows: A History of Marriage and the Nation (Harvard University Press, 2001).

Cecilia Elena Rouse is a professor of economics and public affairs and dean of the Woodrow Wilson School of Public and International Affairs at Princeton University.

Clive R. Belfield is associate director of the National Center for the Study of Privatization in Education at Teachers College at Columbia University in New York. He also is an assistant professor of economics at Queens College, City University of New York.