Paul Amato is a professor of sociology, demography and family studies at Pennsylvania State University. His research interests include marital quality, the causes and consequences of divorce and subjective well-being over the life course.

John M. Wagner is director of the Office for Community Development of the Catholic Archdiocese of Philadelphia, which works to provide affordable housing in the area.

James Hoefler is a professor and the coordinator of the political science department at Dickinson College.

The Myer & Rosaline Feinstein Center for American Jewish History, based at Temple University in Philadelphia, Pa., promotes the study of the Jewish experience in America.

Margaret Downey is founder and president of The Freethought Society, based in Pocopson, Pa. She is also a secular celebrant, performing life-cycle ceremonies for nonbelievers.

Dennis Culhane is a professor of social welfare policy at the University of Pennsylvania where he studies homelessness and housing policy.

Scott Ballenger is founder of the Trial Acceleration Institute in Spring House, Pa., which assists stakeholders in speeding up clinical trials.

Daniel Aleshire directs the Association of Theological Schools, which is based in Pittsburgh, Pa. The association has 251 member schools with 80,140 students total, of whom 64 percent are men and 36 percent are women. The ATS posts a number of tables on seminary enrollment.

William H. Curtis is president of the Hampton University Ministers’ Conference, the oldest nondenominational African-American ministers conference in the country. He is senior pastor of 7,500-member Mount Ararat Baptist Church in Pittsburgh, Pa.