Davis Voas is a professor of social science at University College London, where he studies religious change.  He helps lead the European Values Survey and British Religion in Numbers project.

Scott McConnell is the executive director of LifeWay Research, which conducts surveys on issues affecting American religious life and Protestant pastors. Arrange an interview through Aaron Earls.

Jennifer McClure is an assistant professor of religion at Samford University in Birmingham, Ala. She is also the senior associate for congregational resources with the Association of Religion Data Archives and consults with congregations on organizational health.

Rebekka King is an assistant professor of philosophy and religious studies at Middle Tennessee State University, where she teaches courses on global Christianity, Islam and Judaism. Her research focuses on the secular and religious elements of progressive Christianity. She is co-chair of the American Academy of Religion’s Sociology of Religion program unit.

Michael Hout is director of the Center for Advanced Social Science Research at New York University, where he also teaches sociology. He has studied and written on the rise of the nonreligious and is the author or co-author of multiple books, including Century of Difference: How America Changed in the Last One Hundred Years.

Bethamie Horowitz is co-director of the programs in education and Jewish studies at New York University. She also has a research and consulting practice and has spent the last two decades tracking major issues facing the Jewish community.

Rachel Heath is a doctoral candidate at Vanderbilt University, where she researches multiple religious belonging.

Conrad Hackett is Pew Research Center’s associate director of research and senior demographer. Contact him through Anna Schiller.

Mary Gautier is a senior research associate with the Center for Applied Research in the Apostolate, which studies Catholic demographic trends.