Table 4.
Sex differences in the EF skills variables, MC variables, and participants’ age
| Boys, n = 147 | Girls, n = 125 | U-Mann–Whitney test | p | Effect size, rb | |||
|---|---|---|---|---|---|---|---|
| M | SD | M | SD | ||||
| Verbal working memory | 19.1 | 3.36 | 19.2 | 3.76 | 8911 | .668 | .030 |
| Visual working memory | 70.1 | 20.07 | 72.0 | 19.81 | 8644 | .401 | .059 |
| Cognitive inhibition | 11.0 | 3.20 | 11.2 | 2.89 | 8719 | .466 | .051 |
| Motor inhibition | 26.2 | 4.49 | 27.1 | 3.12 | 8396 | .215 | .086 |
| Cognitive flexibility | 20.1 | 3.20 | 20.7 | 2.78 | 8072 | .082 | .121 |
| Manual dexterity skills | 24.6 | 7.50 | 27.1 | 7.23 | 7264 | .003 | .209 |
| Aiming and catching skills | 17.1 | 4.62 | 15.6 | 4.19 | 7586 | .013 | .174 |
| Balance skills | 28.7 | 6.37 | 30.5 | 5.29 | 7763 | .027 | .155 |
| Motor competence | 70.4 | 14.30 | 73.2 | 12.79 | 8137 | .104 | .114 |
| Age, months | 70.5 | 4.01 | 70.5 | 4.26 | 9157 | .962 | .003 |