Lamin Sanneh is the D. Willis James Professor of Missions and World Christianity at Yale University. He wrote the entry “Gratitude and Ingratitude” in the Encyclopaedia of the Qur’ān.

Robert C. Roberts is a professor of ethics at Baylor University. He specializes in virtues and emotions and wrote the entry on gratitude in New Dictionary of Christian Ethics & Pastoral Theology.

Patricia Castillo is executive director of PEACE Initiative, a San Antonio coalition of organizations committed to ending domestic violence. The group has held workshops for local faith leaders about responding to domestic violence.

Sheryl Cates is executive director of the Texas Council on Family Violence, an organization that works to educate the community about domestic violence. It has formed partnerships with different faith groups across Texas and publishes a brochure for clergy about responding to domestic violence. It is based in Austin, Texas.

The Rev. Amanda Hendler-Voss is senior pastor at First Congregational UCC in Washington, D.C., and a member of the Wellspring Clergywomen’s Alliance of the Black Church and Domestic Violence Institute.

Yitzchok Breitowitz is the rabbi of the Woodside Synagogue in Silver Spring, Md. He speaks on issues of family law and ethics and has delivered talks on men’s anger and the Torah.

Read a Beliefnet column that describes Christian, Jewish and Muslim perspectives on gratitude and links to Buddhist and Hindu views.

The summer 2007 issue of Greater Good magazine, published by the Greater Good Science Center at the University of California, Berkeley, surveys new research on gratitude.