| First measurement-point (kindergarten) | Second measurement-point (first grade) | ||||||||||
| Total | Girls | Boys | Total | Girls | Boys | ||||||
| M | (SD) | M | (SD) | M | (SD) | M | (SD) | M | (SD) | M | (SD) |
Academic self-concept |
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Mathematical | 18.34 | (6.25) | 18.50 | (6.94) | 18.19 | (5.65) | 19.25 | (4.74) | 18.34 | (5.05) | 20.12 | (4.35) |
Literacy | 16.33 | (6.60) | 17.12 | (6.47) | 15.66 | (6.67) | 20.01 | (4.34) | 20.25 | (4.17) | 19.81 | (4.50) |
Social self-concept |
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Peer-related | 20.31 | (4.90) | 20.87 | (5.21) | 19.84 | (4.61) | 19.51 | (4.75) | 19.03 | (5.14) | 19.90 | (4.38) |
Teacher-related | 20.68 | (5.15) | 21.66 | (4.79) | 19.85 | (5.33) | 20.60 | (4.38) | 21.02 | (4.23) | 20.25 | (4.50) |