Religious attendance: Religious attendance was inversely related to cheating on one's spouse or cohabiting partner. Those who worshiped weekly were least likely to have ever been unfaithful (12 percent), followed by those who worshiped less than weekly but at least monthly (12.4 percent), those who worshiped less than monthly (16.5 percent), and those who never worshiped (19 percent).
Marital status: Those in always-intact marriages were least likely to have ever cheated on their spouse or cohabiting partner (12.8 percent). A history of infidelity is more prevalent among those in non-intact family structures and among singles: 25.5 percent of those who were divorced and remarried were likely to have ever cheated on their spouse or cohabiting partner, and 30.5 percent of those who were divorced or separated had ever been unfaithful.
Religious attendance and marital status combined: Those in intact marriages who worshiped weekly were the least likely to have ever cheated on a spouse or cohabiting partner (10.6 percent), followed by those in non-intact family structures or who are single who worshiped weekly (12.3 percent). Those in intact marriages who never worshiped (17 percent) and those in non-intact family structures or who are single who never worshiped (19.8 percent) were more likely to have cheated on their spouse or cohabiting partner.
Related Insight from Other Studies
Data from the 1991- 2004 General Social Survey found that both attending church and holding to Biblical beliefs were associated with lower odds of marital infidelity, and another study found that individuals who said they were in "very happy" marriages exhibited strong religious behavior.
A different analysis of nationally representative survey data found higher likelihood of sexual infidelity among married or cohabiting couples with "stronger sexual interests, more permissive sexual values, lower subjective satisfaction with their union, weaker network ties to partner, and greater sexual opportunities."
Patrick F. Fagan, Ph.D. and Althea Nagai
Pat Fagan is senior fellow and director of the Marriage and Religion Research Institute (MARRI) at Family Research Council.
Althea Nagai is a visiting fellow with the Family Research Council.
 Amy Burdette, Christopher Ellison, Darren Sherkat and Kurt Gore, "Are There Religious Variations in Marital Infidelity?" Journal of Family Issues 28, no. 12 (December 2007): 1553-1581.
 David Atkins, Donald Baucom, and Neil Jacobson, "Understanding Infidelity: Correlates in a National Sample," Journal of Family Psychology 15, no. 4 (December 2001): 742.
 Judith Treas and Deirdre Giesen, "Sexual Infidelity Among Married and Cohabiting Americans," Journal of Marriage and Family 62, no.1 (February 2000): 48-60.