Table 2.
Performance on all measures by grade, with independent sample-t-test by grade
| Possible Raw Score |
2nd M (SD) |
5th M (SD) |
t | p | |
|---|---|---|---|---|---|
| Range | n = 200 | n = 149 | df = 348 | ||
| Spatial Relations | 0-81 | 64.33 (6.85) | 69.26 (5.99) | 7.03 | <.001 |
| Block Design | 0-68 | 32.58 (12.04) | 42.79 (11.81) | 7.92 | <.001 |
| Matrix Reasoning | 3-35 | 20.51 (4.87) | 24.75 (4.29) | 8.48 | <.001 |
| Spatial/Block/Matrix composite | NA | −0.34(0.80) | .45 (.72) | 9.50 | <.001 |
| Auditory working memory | 0-45 | 19.9 (5.28) | 25.27 (5.26) | 9.44 | <.001 |
| Mathematics Fluency | 0-160 | 44.51 (15.91) | 75.32 (21.62) | 15.38 | <.001 |
| Calculation | 0-45 | 13.43 (3.83) | 23.15 (4.93) | 20.80 | <.001 |
| Number Line PAE | 0-1 | 0.27 (0.09) | 0.11 (0.08) | 15.50 | <.001 |
| Fraction Comparison Accuracy | 0-1 | 0.84 (0.13) | 0.93 (0.08) | 7.00 | <.001 |
| FKA Score | 0-1 | 0.63 (0.21) | 0.56 (0.26) | 2.58 | 0.01 |
| TORR Jr. Analogy | 0-8 | 3.7 (1.96) | 5.37 (1.63) | 7.82 | <.001 |