Table 1.

Means, Standard Deviations, and Effect Sizes for Pre-engagement Cohabitation History Comparisons

Construct	Before engagement M (SD)	After engagement M (SD)	Not until marriage M (SD)	Before vs. after engagement ES (with cov.)	Before vs. not until marriage ES (with cov.)	After vs. not until marriage ES (with cov.)
Relationship satisfaction	4.46 (.74)	4.64 (.54)	4.55 (.60)	−.27* (−.23*)	−.13 (−.10)	.15 (.14)
Relationship dedication	4.55 (.56)	4.66 (.39)	4.66 (.46)	−.25* (−.13)	−.23* (−.12)	.00 (.00)
Relationship confidence	4.59 (.77)	4.77 (.42)	4.72 (.61)	−.30* (−.27*)	−.18* (−.12)	.10 (.16)
Sexual satisfaction	4.45 (.80)	4.48 (.73)	4.48 (.76)	−.05 (.00)	−.05 (.02)	.00 (.03)
Friendship	4.45 (.72)	4.53 (.55)	4.51 (.60)	−.12 (−.08)	−.09 (−.02)	.03 (.06)
Negative communication	1.46 (.45)	1.39 (.34)	1.33 (.36)	.18 (.13)	.33* (.25*)	.18 (.14)

Notes. Effect sizes are Cohen’s d values; effect sizes reported in parentheses, “(with cov.)” are the effect sizes controlling for marriage length, religiousness, and education.

^*Indicates significant differences between two groups, based on t-tests, p < .05.