Robin Dion is a research psychologist at Mathematica Policy Research, which has offices in Washington, D.C., and Princeton, N.J. She is the principal investigator for a federally funded research project, Strengthening Families with a Child Born Out-of-Wedlock. Contact Mathematica Policy Research.

The Coalition for Marriage, Family and Couples Education is dedicated to making marriage education widely available. Diane Sollee is director.

The American Association for Marriage and Family Therapy is the professional association for the field of marriage and family therapy. The organization represents the professional interests of more than 50,000 marriage and family therapists throughout the United States, Canada and abroad.

Psychology Today offers a summary page on marriage, including articles and blogs by relationship experts. The page also includes links to pages on related topics, including divorce, homosexuality and relationships.

Anne Hendershott is a professor of psychology, sociology and social work at Franciscan University of Steubenville in Ohio. She is the author of The Politics of Abortion (Encounter Books, 2006).

Read a May 31, 2011, Science and Religion Today article on whether a declining marriage rate will affect the country’s overall happiness.

Tim Murphy is an associate professor of religious studies at the University of Alabama. He teaches a course on modern atheism.

Dr. J. Anderson Thomson Jr. is a psychiatrist in Charlottesville, Va., and a trustee of the Richard Dawkins Foundation for Reason and Science. He is interested in the new cognitive neuroscience of religious belief — why human minds generate, accept and spread religious ideas — and spoke on the subject at the American Atheists’ 2009 convention. He has also […]

Joseph Levine is a philosophy professor at the University of Massachusetts, Amherst. His essay “From Yeshiva Bochur to Secular Humanist” is included in Philosophers Without Gods: Meditations on Atheism and the Secular Life (2007).