Table 1.
Descriptive Statistics and Stability Across Time on the Full Sample
| Descriptive statistics (years) | Stability (years) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3 | 5 | 6 | 3 → 5 | 5 → 6 | 3 → 6 | ||||
| M | SD | M | SD | M | SD | β | β | β | |
| Activity Level | 21.62 | 3.11 | 20.66 | 2.94 | 20.45 | 2.98 | .61 | .71 | .56 |
| Emotionality | 12.40 | 4.21 | 12.74 | 3.34 | 12.70 | 3.36 | .59 | .69 | .54 |
| Shyness | 12.46 | 4.07 | 11.92 | 3.22 | 11.79 | 3.17 | .63 | .73 | .57 |
| Sociability | 18.20 | 3.09 | 18.16 | 2.62 | 18.23 | 2.64 | .51 | .60 | .46 |
Note. Sample sizes ranged from 9,704 to 9,713 for the 3- to 5-year, and 5- to 6-year models, and ranged from 9,493 to 9,503 for the 3- to 6-year models. Stability estimates are all significant, ps < .001.