Table 2.
Descriptive statistics and zero-order correlations among study variables for European ancestry and African ancestry samples
| Measure | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EA | AA | EA | AA | EA | AA | EA | AA | EA | AA | EA | AA | EA | AA | EA | AA | |
| 1. Adolescent EXT PGS | – | – | ||||||||||||||
| 2. Parental EXT PGS | .55 | .51 | – | – | ||||||||||||
| 3. Adolescent Externalizing | .23 | .01 | .19 | .03 | – | – | ||||||||||
| 4. Parental Externalizing | .30 | .06 | .35 | .11 | .30 | .10 | – | – | ||||||||
| 5. Parental Involvement | −.06 | −.04 | −.03 | −.07 | −.13 | −.13 | −.05 | −.05 | – | – | ||||||
| 6. Parent-child Communication | −.09 | −.05 | −.05 | −.02 | −.10 | −.09 | −.07 | .03 | .45 | .38 | – | – | ||||
| 7. Parent-child Closeness | −.12 | −.05 | −.09 | −.12 | −.25 | −.15 | −.15 | −.04 | .39 | .33 | .35 | .40 | – | – | ||
| 8. Parental Knowledge | −.12 | .00 | −.07 | −.05 | −.38 | −.26 | −.18 | −.07 | .28 | .30 | .30 | .33 | .44 | 0.39 | – | – |
| Mean | 0 | 0 | 0 | 0 | −0.04 | 0.09 | 0.06 | 0.10 | 3.95 | 3.96 | 2.22 | 2.23 | 0.11 | 0.06 | 3.49 | 3.27 |
| SD | 1 | 1 | 0.84 | 0.89 | 0.69 | 0.56 | 0.84 | 0.89 | 1.03 | 1.09 | 0.88 | 0.87 | 0.69 | 0.8 | 0.57 | 0.73 |
Note. Abbreviations: SD = standard deviation. EXT PGS = Externalizing polygenic score. EA = participants of European ancestry. AA = participants of African ancestry. Correlations and descriptive statistics for the AA sample are presented in the grey shaded columns. PGS residualized on first 10 genetic ancestry principal components. In the AA sample, EXT PGS was constructed based on the weights from the discovery GWAS of European ancestry individuals.
Bolded correlations indicate p < .05