Table 2. Means and standard deviations for study variables, for girls (n = 101) and boys (n = 103).
| Total M (SD) | Males M (SD) | Females M (SD) | F a | |
|---|---|---|---|---|
| Teacher-rated inattention | −1.58 (13.92) | 3.43 (13.07) | −6.69 (12.91) | 30.95** |
| Word reading | 102.0 (11.79) | 100.53 (12.52) | 103.56 (10.84) | 3.41 |
| Reading fluency | 102.2 (44.26) | 95.95 (44.83) | 108.47 (42.98) | 4.14* |
| Math calculation | 95.00 (9.61) | 94.15 (9.35) | 95.87 (9.83) | 1.65 |
| Addition fluency | 41.67 (18.14) | 42.37 (19.51) | 40.96 (16.70) | 0.31 |
| Subtraction fluency | 29.82 (13.90) | 32.23 (14.88) | 27.36 (12.43) | 6.44* |
| Auditory-verbal WM | 8.77 (2.45) | 8.78 (2.33) | 8.76 (2.58) | 0.002 |
| Visual-spatial WM | 8.12 (3.25) | 7.73 (3.31) | 8.51 (3.16) | 3.01 |
Notes.
*
p < .05
**
p < .001
a
F statistic for one-way ANOVA.
Measured at Year 1 Time A: Teacher-rated Inattention, Age, Sex, Parent education level.
Measured at Year 1 Time B: All working memory measures.
Measured at Year 2 Time B: All academic measures.
Teacher-rated Inattention, Addition and Subtraction Fluency: total raw scores. Math Calculation, Reading Fluency, Word Reading, working memory variables: Standard Scores.