| 变量 | 项 | M | SD | t | p |
| 是否为独生子女 | 独生(175) | 69.08 | 10.97 | 3.81 | <0.01 |
| 非独生(131) | 64.36 | 10.41 | |||
| 生源地 | 城镇(168) | 68.18 | 11.18 | 1.99 | <0.01 |
| 农村(138) | 65.69 | 10.58 | |||
| 性别 | 男(61) | 66.26 | 8.12 | −0.78 | 0.44 |
| 女(245) | 67.26 | 11.57 |