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Participant details.
| Sex | Age | Math performance | Chinese performance | |||||||||
| Grades | Teacher rating | Grades | Teacher rating | |||||||||
| n | B/G | M | SD | M | SD | M | SD | M | SD | M | SD | |
| CG | 15 | 7/8 | 11.62 | 1.45 | 93.00 | 4.03 | 4.73 | 0.46 | 92.00 | 3.29 | 4.73 | 0.45 |
| NCG | 15 | 7/8 | 11.66 | 1.38 | 94.26 | 3.10 | 4.80 | 0.41 | 91.47 | 3.06 | 4.66 | 0.48 |
CG, chess group; NCG, non-chess group; B, boys; G, girls.
