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Comparison of mean and standard deviations of EF components in Russian and Japanese boys.
| EF component/country | Russia | Japan | Differences | |||
|---|---|---|---|---|---|---|
| M | SD | M | SD | U | p | |
| Cognitive flexibility | 21.0 | 2.03 | 20.1 | 2.17 | 216.0 | 0.133 |
| Visual working memory | 73.3 | 16.0 | 82.0 | 16.54 | 160.5 | 0.061 |
| Cognitive inhibition, time | 120.3 | 26.79 | 105.0 | 34.32 | 176.5 | 0.021 |
| Cognitive inhibition, mistakes | 11.5 | 7.21 | 11.8 | 7.84 | 286.5 | 0.975 |
| Physical inhibition | 26.8 | 3.21 | 28.2 | 2.64 | 185.0 | 0.030 |
