Table 1
Participant Demographics in Studies 1 and 2.
| STUDY 1 | STUDY 2 | |
|---|---|---|
| Sex | ||
| Female | 221 (44%) | 220 (52%) |
| Male | 284 (56%) | 197 (47%) |
| Prefer not to respond | N/A | 4 (1%) |
| Race/Ethnicity | ||
| White | 325 (64%) | 216 (51%) |
| Black | 69 (14%) | 70 (17%) |
| Hispanic | 50 (10%) | 44 (10%) |
| Asian | 49 (10%) | 100 (24%) |
| Other | 12 (2%) | 21 (5%) |
| Prefer not to respond | N/A | 3 (1%) |
| Age (years) | ||
| Mean | 35.8 | 31.7 |
| Standard Deviation | 10.7 | 11.0 |
[i] Note. Participants in Study 2 could select more than one race/ethnicity.
Table 2
Descriptive Statistics and Correlation Matrix for Study 1.
| M | SD | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1. Self-rated Social Skill | 2.9 | 1.1 | — | |||||||
| 2. SST | 70.4 | 14.5 | –.19 | .67 | ||||||
| 3. RMET | 77.5 | 13.8 | –.25 | .47 | .79 | |||||
| 4. STEU-B | 62.9 | 14.6 | –.20 | .48 | .52 | .59 | ||||
| 5. SI Composite | 70.3 | 11.6 | –.26 | .77 | .88 | .77 | .85 | |||
| 6. Vocabulary | 80.7 | 24.5 | –.16 | .35 | .39 | .44 | .48 | .64 | ||
| 7. Matrix Reasoning | 54.6 | 30.7 | –.15 | .48 | .38 | .47 | .53 | .34 | .56 | |
| 8. IQ Composite | 69.1 | 22.4 | –.19 | .51 | .47 | .56 | .61 | .82 | .82 | .67 |
[i] Note. N = 505; All correlations are statistically significant at p < .05; Coefficient alpha is reported in italics on the main diagonal.
Figure 1
Social Intelligence Scores at Each Level of Self-rated Social Skill (Study 1; N = 505).
Note. Error bars display 95% CI.
Table 3
Multiple Regression Results from Studies 1 and 2.
| OUTCOME: SOCIAL INTELLIGENCE TASK PERFORMANCE | B (SE) | β | 95% CI | R2 |
|---|---|---|---|---|
| Study 1 (N = 505) | .40*** | |||
| IQ Composite | 0.30 (0.02) | .59*** | .52, .65 | |
| Self-rated Social Skill | –1.61 (0.37) | –.16*** | –.22, –.09 | |
| Study 2 (N = 422) | .45*** | |||
| IQ Composite | 0.47 (0.03) | .56*** | .48, .64 | |
| Predicted SI Score | 0.17 (0.05) | .14*** | .06, .21 | |
| Self-rated Social Skill | –3.12 (0.57) | –.21*** | –.28, –.13 |
[i] Note. Study 1: F(2, 502) = 167.80, p < .001; Study 2: F(3, 418) = 115.70, p < .001; 𝛽 = standardized regression coefficient; B = unstandardized regression coefficient; SE = standard error; *** p < .001.
Table 4
Correlation Matrix and Descriptive Statistics for Study 2.
| M | SD | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. Self-rated Social Skill | 3.1 | 1.2 | — | |||||||||
| 2. Self-rated Intelligence | 3.5 | 1.0 | .41 | — | ||||||||
| 3. SST | 70.2 | 22.7 | –.29 | –.11 | .69 | |||||||
| 4. RMET | 70.2 | 21.8 | –.35 | –.13 | .53 | .66 | ||||||
| 5. STEU-B | 63.7 | 21.4 | –.28 | –.06 | .53 | .56 | .64 | |||||
| 6. SI Composite | 68.0 | 18.3 | –.37 | –.12 | .83 | .84 | .83 | .83 | ||||
| 7. Vocabulary | 59.3 | 25.1 | –.26 | –.02 | .31 | .37 | .41 | .43 | .78 | |||
| 8. Matrix Reasoning | 58.4 | 27.5 | –.28 | –.05 | .56 | .47 | .53 | .62 | .39 | .72 | ||
| 9. IQ Composite | 58.8 | 21.9 | –.32 | –.04 | .53 | .50 | .56 | .64 | .82 | .85 | .81 | |
| 10. Predicted SI Score | 67.0 | 14.4 | .16 | .20 | .15 | .13 | .08 | .14 | .05 | .07 | .07 | — |
| 11. Predicted IQ Score | 56.2 | 18.5 | .12 | .29 | .04 | .02 | .01 | .03 | .36 | .24 | .35 | .52 |
[i] Note. N = 422; bold values indicate p < .05; coefficient alpha is reported in italics on the main diagonal.
Figure 2
Social and General Intelligence Scores at Each Level of Comparative Self-Rating for Social Skills and Intelligence (Study 2; N = 422).
Note. Error bars display 95% CI.