| Items | r | p |
| Ability |
|
|
| Age | −0.21 | 0.00** |
| Gender | −0.19 | 0.00** |
| Race | −0.06 | 0.34 |
| Education | −0.13 | 0.03* |
| Hometown | 0.04 | 0.46 |
| Father’s educational level | −0.10 | 0.08 |
| Mother’s educational level | −0.02 | 0.68 |
| Family members studying/studied at university | −0.01 | 0.85 |