Paul Bennett is director of the child advocacy clinic at the University of Arizona’s College of Law in Tucson.

Robert Rector is a senior research fellow for domestic policy studies at the Heritage Foundation. He says abstinence is the only solution to teen pregnancy.

Founder and president of the National Abstinence Clearinghouse, based in Sioux Falls, S.D.

President and founder of the nonprofit Institute for Youth Development, which promotes a risk avoidance message that includes sexual abstinence.

Offers research and more at its Web site. Valerie Huber is executive director.

Bernard Schlager is executive director of the Center for Lesbian and Gay Studies in Religion and Ministry, described as “the only Center for LBGTQ issues and religion established by a seminary or school of religion in the world.” Affiliated with the Pacific School of Religion in Berkeley, Calif., it has held conferences for LGBT religious leaders.

An obstetrician/gynecologist, is founder and chairman of the nonprofit Medical Institute for Sexual Health, which worked on pro-abstinence programs with the Bush administration and faith-based groups.

W. George Scarlett is assistant professor of child development at Tufts University in Medford, Mass. He was an editor of the Encyclopedia of Spiritual Development in Childhood and Adolescence.

Ronald William Nelson is a Kansas family lawyer who is chairman of the custody committee of the American Bar Association’s family law section.