Table 3. Same-Sex Homophily by Gender and Sexual Orientation (Hypothesis 2).
| Mean Number of Same-Gender minus Cross-Gender Friends | ||||||
| Heterosexual | Gay/Lesbian | Bisexual | ||||
| Men | Women | Men | Women | Men | Women | |
| M | M | M | M | M | M | |
| (SD) | (SD) | (SD) | (SD) | (SD) | (SD) | |
| All Participants | ||||||
| Talk About Sex Life | .96 | 1.68 | 1.09 | 1.50 | .29 | 1.08 |
| (2.87) | (2.23) | (3.89) | (2.92) | (3.67) | (3.29) | |
| Call At Night If Trouble | 1.48 | 1.08 | .86 | 1.70 | .96 | .59 |
| (1.48) | (2.34) | (2.50) | (2.49) | (2.72) | (3.10) | |
| Celebrate Birthday | .77 | 1.43 | 1.27 | 2.19 | .11 | .77 |
| (2.55) | (2.65) | (3.34) | (3.26) | (3.06) | (3.07) | |
| Comparison of Mean Number of Same- vs. Cross-Gender Friends | ||||||
| Heterosexual | Gay/Lesbian | Bisexual | ||||
| Men | Women | Men | Women | Men | Women | |
| d | d | d | d | d | d | |
| Participants Aged 18–29 | ||||||
| Talk About Sex Life | .57*** | .81*** | -.05 | .56*** | .08 | .33*** |
| Call At Night If Trouble | .68*** | .39*** | .00 | .55*** | .13 | .19** |
| Celebrate Birthday | .58*** | .45*** | .14 | .60*** | -.07 | .23*** |
| Participants Aged 30+ | ||||||
| Talk About Sex Life | .30*** | .73*** | .47*** | .50*** | .08 | .33*** |
| Call At Night If Trouble | .53*** | .50*** | .53*** | .82*** | .43*** | .19** |
| Celebrate Birthday | .25*** | .58*** | .44*** | .71*** | .08 | .28*** |
*** p < .001
** p < .01.
Differences in mean number of same-gender versus cross-gender friends are displayed in the form of Cohen’s d. Since these comparisons all involved within-subjects comparisons, effect size d was calculated using Morris and DeShon’s equation 8 [43] rather than Cohen’s formula [34]. Statistical significance is based on the results of paired-samples t-tests. A positive effect size indicates that participants reported having more same-gender than cross-gender friends in that group. For example, heterosexual men ages 18–29 reported having more same-gender than cross-gender friends (d = .57).