Table 2.
Hierarchical multilevel regressions predicting strength of social identity (N = 852).
| Fixed Effect | Ingroup Ties |
Ingroup Affect |
Cognitive Centrality |
|---|---|---|---|
| Step 1: | R2 = .11 / .17 | R2 = .02 / .05 | R2 = .03 / .12 |
| Sex (M = 1, F = 2) γ01 | .03 (.11) | .15 (.10) | .18 (.12) |
| Team Size γ02 | −.02 (.06) | −.05 (.05) | .00 (.07) |
| Tenure γ10 | .33 (.03)*** | .09 (.03)* | .16 (.03)*** |
| Step 2: | ΔR2 = .11 / .12 | ΔR2 = .03 / .04 | ΔR2 = .05 / .06 |
| LRT = 130.07*** | LRT = 31.37*** | LRT = 48.93*** | |
| Sex (M = 1, F = 2) γ01 | .07 (.11) | .19 (.10) | .21 (.13) |
| Team Size γ02 | −.03 (.07) | −.07 (.05) | −.01 (.07) |
| Tenure γ10 | .17 (.03)*** | .00 (.04) | .05 (.05) |
| Outdegree Friendship γ20 | .21 (.04)*** | .15 (.05)** | .19 (.05)*** |
| Outdegree Interaction γ | .21 (.04)*** | .08 (.05) | .09 (.05) |
| Step 3: | ΔR2 = .03 / .04 | ΔR2 = .03 / .04 | ΔR2 = .02 / .02 |
| LRT = 47.67*** | LRT = 27.28*** | LRT = 20.91*** | |
| Sex (M = 1, F = 2) γ01 | .08 (.12) | .20 (.10) | .22 (.13) |
| Team Size γ02 | −.04 (.07) | −.07 (.06) | −.01 (.07) |
| Tenure γ10 | .04 (.04) | −.11 (.04)* | −.04 (.04) |
| Outdegree Friendship γ20 | .18 (.04)*** | .11 (.05)* | .15 (.05)*** |
| Outdegree Interaction γ30 | .16 (.04)*** | .03 (.05) | .05 (.05) |
| Indegree Friendship γ40 | .19 (.09)* | .03 (.10) | −.01 (.09) |
| Indegree Interaction γ50 | .08 (.09) | .20 (.09)* | .21 (.09)* |
| Step 4: | ΔR2 = .08 / .00 | ΔR2 = .03 / .00 | ΔR2 = .03 / .00 |
| LRT = 42.56*** | LRT = 15.85** | LRT = 9.87** | |
| Sex (M = 1, F = 2) γ01 | .04 (.07) | .14 (.09) | .16 (.12) |
| Team Size γ02 | .01 (.04) | −.05 (.05) | .01 (.07) |
| Tenure γ10 | .02 (.04) | −.12 (.04)** | −.05 (.04) |
| Outdegree Friendship γ20 | .18 (.04)*** | .12 (.05)* | .16 (.05)*** |
| Outdegree Interaction γ30 | .16 (.04)*** | .03 (.05) | .05 (.05) |
| Indegree Friendship γ40 | .20 (.09)* | .04 (.10) | .00 (.09) |
| Indegree Interaction γ50 | .08 (.08) | .20 (.09)* | .21 (.09)* |
| Density Friendship γ03 | −.09 (.31) | −.36 (.41) | −.33 (.55) |
| Density Interaction γ04 | .74 (.26)** | .72 (.34)* | .70 (.46) |
| Final Model R2 | .33 / .33 | .11 / .13 | .13 / .20 |
| Final ICC (% explained) | .01 (86%) | .02 (60%) | .08 (20%) |
Note: Bold rows indicate that variable was added in the current step. R2 values are marginal and conditional, respectively. Marginal R2 is based only on fixed effects, while conditional R2 is based on fixed and random effects. LRT = Likelihood Ratio Test, which indicates significant improvements in model fit from one step to the next.
*
p<.05
**
p<.01
***
p<.001.