Table 3. Descriptive statistics, tests of mean differences, and effect sizes for primary and secondary relationships among partners who do not cohabitate.
| Variable | Primary Relationship | Secondary Relationship | Paired Data | |||||
|---|---|---|---|---|---|---|---|---|
| M | SD | M | SD | n | ra | t | d | |
| Relationship acceptance: Family | 6.80 | 2.17 | 4.62 | 2.23 | 186 | .25 | 11.03 | 0.99 |
| Relationship acceptance: Friends | 8.02 | 1.57 | 6.38 | 2.17 | 189 | .37 | 10.43 | 0.85 |
| Romantic secrecy | 2.86 | 2.48 | 4.69 | 2.96 | 189 | .45 | -8.72 | -0.67 |
| Investment size | 7.17 | 1.39 | 4.66 | 1.91 | 189 | .33 | 17.53 | 1.48 |
| Relationship satisfaction | 7.73 | 1.31 | 6.25 | 1.57 | 189 | .17 | 10.90 | 1.02 |
| Quality of alternatives | 6.00 | 1.53 | 6.79 | 1.44 | 189 | .51 | -7.32 | -0.53 |
| Commitment level | 8.18 | 1.21 | 5.80 | 1.96 | 189 | .22 | 15.84 | 1.44 |
| Relationship communication | 5.19 | 1.40 | 3.65 | 1.27 | 200 | .44 | 15.29 | 1.14 |
| Quality of communication | 4.52 | .74 | 3.56 | 0.97 | 203 | .28 | 13.03 | 1.10 |
| Percentage of sexual activity | 30.02 | 21.92 | 40.23 | 28.05 | 190 | .19 | -4.38 | -0.40 |
a r = the correlation between scores for primary and secondary relationships.