Religious intermarriage in the United States: trends, patterns, and predictors

The reciprocal connection between religion and family life makes the topic of religious intermarriage of particular importance in the sociology of religion. Spousal influences are key for motivating religious switching and other religious commitments. Religious intermarriage has also been shown to influence a host of other outcomes, including spousal conflict, domestic violence, divorce, and fertility. Using data from the 1973–1994 GSS, I estimate log-multiplicative models examining patterns of association between spouses’ religious affiliations across two broad cohorts. Two-step and FIML Heckman’s selection models are used to determine how education, migration, cohort, and denominational origins influence the probability of intermarriage and the distance of intermarriage if it occurs. Religious intermarriage increases across cohorts, but declines in homogamy are limited to liberal religious groups. Catholics and members of conservative sects are less likely to intermarry compared to others. The relative ordering of distances between religious groups was unchanged across cohorts. Educational attainment increases the likelihood of intermarriage, and marriages in which the woman has more education are more likely to be heterogamous. However, educational factors have no impact on the distance of intermarriage if it occurs. Geographically stable rural Southerners are least likely to intermarry and if they do, choose a more similar spouse.