Table 1. Correlations of the perceptual speed factor to ability factors of the Berlin Intelligence Structure Test.
| BIS-PS | |
|---|---|
| Pretest | .578 |
| Posttest | .278 |
| χ2 Test of Difference | 11.275 |
| BIS-Reasoning | |
| Pretest | .245 |
| Posttest | .146 |
| χ2 Test of Difference | 0.756 |
| BIS-EM | |
| Pretest | .252 |
| Posttest | .159 |
| χ2 Test of Difference | 0.944 |
Notes.
Differences between pretest and posttest correlations were tested with likelihood-ratio tests, comparing the model in which the correlation were freely estimated with a model in which it was constrained to be equal. The resulting χ2 tests all have df = 1 and a critical value (with α = .05) of 3.841; significant differences (pretest vs. posttest) are shown in bold face.
- BIS
- Berlin Intelligence Structure Test
- PS
- Perceptual Speed
- EM
- Episodic Memory