Table 3.
Results of two-segment regression analyses
| Variable | N | Transition Age | Slope 1 | Slope 2 |
|---|---|---|---|---|
| T1 Session 1 | ||||
| Definition Vocabulary | 4769 | 66.0 | .008* | −.012* |
| Picture Vocabulary | 4765 | 64.4 | .025* | −.021* |
| Synonym Vocabulary | 4646 | 65.0 | .020* | .001 |
| Antonym Vocabulary | 4626 | 65.0 | .017* | −.010 |
| Session 1 | ||||
| T1 Mean | 4609 | 65.0 | .017* | −.009* |
| T1 Within-Person SD | 4770 | 65.3 | −.002* | .009* |
| T2-T1 Difference | 2158 | 76.0 | −.004* | −.013 |
| T2-T1 Within-Person SD | 2252 | 68.7 | −.001* | .017* |
| Session 2 | ||||
| T1 Mean | 2543 | 65.4 | .008* | −.012* |
| T1 Within-Person SD | 2608 | 66.0 | −.001 | .004* |
| T2-T1 Difference | 1002 | 67.0 | −.001 | −.010 |
| T2-T1 Within-Person SD | 1046 | 42.0 | −.003 | .003* |
| Session 3 | ||||
| T1 Mean | 2531 | 69.0 | .009* | −.010 |
| T1 Within-Person SD | 2580 | 76.0 | .000 | .011 |
| T2-T1 Difference | 994 | 68.7 | −.005* | −.004 |
| T2-T1 Within-Person SD | 1031 | 76.0 | .000 | .014 |
Note:
*
p<.01.
The slope is the z-score difference per year of age before (Slope 1) and after (Slope 2) the transition age.