| Model 1 | Model 2 | ||
---|---|---|---|---|
B | SE B | B | SE B | |
Fixed part | ||||
 Between | ||||
  Test (grade) |  |  | −.14** | .08 |
  Mean growth rate | 0.04** | 0.00 | 0.05** | 0.01 |
  Covariance | −0.01 | 0.01 | 0.00 | 0.01 |
Random part | ||||
 Within variance (time) | 0.72** | 0.08 | 0.70** | 0.08 |
 Between variance (person) | 0.29** | 0.15 | 0.30** | 0.15 |
 Slope variance | 0.00** | 0.00 | 0.00** | 0.00 |