| 变量 | 基线期(n = 22) | 3个月(n = 20) | 6个月(n = 20) | 12个月(n = 20) |
| FIQ | 105.3 ± 10.3 | 105.1 ± 8.7 | 106.1 ± 8.3 | 106.2 ± 8.1 |
| VIQ | 105.9 ± 10.4 | 105.2 ± 9.0 | 105.9 ± 9.5 | 106.1 ± 8.6 |
| PIQ | 104.7 ± 10.1 | 105.8 ± 9.0 | 105.5 ± 8.3 | 105.8 ± 8.2 |
| 言语测验 | ||||
| 常识 | 10.4 ± 2.4 | 10.9 ± 2.0 | 11.2 ± 1.8 | 11.2 ± 1.9 |
| 类同 | 11.2 ± 1.7 | 11.2 ± 1.7 | 11.4 ± 1.9 | 11.3 ± 1.3 |
| 算术 | 10.3 ± 2.1 | 10.6 ± 1.5 | 10.3 ± 1.8 | 10.5 ± 1.8 |
| 词汇 | 10.4 ± 2.1 | 10.7 ± 1.7 | 10.7 ± 1.7 | 11.0 ± 1.9★ |
| 理解 | 10.5 ± 2.1 | 10.6 ± 1.9 | 11.0 ± 1.9 | 10.6 ± 1.4 |
| 操作测验 | ||||
| 动物房 | 8.8 ± 1.8 | 9.3 ± 1.5 | 9.0 ± 1.5 | 9.2 ± 1.7 |
| 几何图形* | 13.7 ± 2.9 | 13.6 ± 3.2 | 13.8 ± 2.5 | 13.9 ± 2.5 |
| 填图 | 9.3 ± 1.1 | 9.6 ± 1.0 | 9.7 ± 1.6 | 9.8 ± 1.6 |
| 积木 | 10.6 ± 1.9 | 10.9 ± 2.0 | 10.9 ± 1.9 | 10.8 ± 1.7 |
| 迷津 | 10.5 ± 2.6 | 10.7 ± 2.0 | 11.2 ± 2.0 | 11.3 ± 2.2 |
| 视觉分析 | 10.8 ± 2.1 | 10.9 ± 1.4 | 10.7 ± 2.0 | 10.8 ± 2.0 |