Variable | Min–Max | Mean (SD) | α | |||||
---|---|---|---|---|---|---|---|---|
6Â years | 7Â years | 6 years | 7 years | All | 6 years | 7 years | All | |
The domain-specific early mathematics | ||||||||
Dot-Dot comparison test | 0–30 | 0–30 | 18.84 (10.12) | 25.24 (6.87) | 22.23 (9.13) | .97 | .95 | .97 |
Dot-Number comparison test | 0–30 | 0–30 | 17.36 (9.68) | 23.23 (9.13) | 20.46 (9.83) | .96 | .97 | .97 |
Number comparison test | 0–120 | 0–120 | 49.61 (34.60) | 83.44 (30.93) | 67.50 (36.79) | .99 | .99 | .99 |
Mental number line | 1.5–55 | 0–44.6 | 19.37 (8.21) | 15.96 (8.38) | 17.57 (8.46) | .76 | .67 | .72 |
The number-specific EFs | ||||||||
Numerical Stroop test | 0–60 | 0–60 | 39.34 (17.21) | 51.30 (12.94) | 45.66 (16.23) | .97 | .97 | .97 |
Numerical shifting test | 0–35 | 0–35 | 17.52 (9.82) | 23.92 (8.85) | 20.90 (9.84) | .95 | .94 | .95 |
Mathematics abilities | ||||||||
Number sets test | 0–31 | 0–32 | 4.42 (6.27) | 13.98 (9.39) | 9.48 (9.37) | .94 | .94 | .94 |
Numerical operation test | 0–20 | 0–20 | 2.46 (4.02) | 7.61 (6.23) | 5.18 (5.89) | .93 | .94 | .95 |
Variable | Skewness | Kurtosis | Group differences (6 vs. 7Â years old) | ||||||
---|---|---|---|---|---|---|---|---|---|
6 years | 7 years | All | 6 years | 7 years | All | F(df) | p | Partial η2 | |
The domain-specific early mathematics | |||||||||
Dot-Dot comparison test | − 0.49 | − 1.71 | − 1.05 | − 1.15 | 2.52 | − 0.11 | 70.49 (1) | < .01 | 0.12 |
Dot-Number comparison test | − 0.28 | − 1.26 | − 0.71 | − 1.13 | 0.39 | − 0.80 | 49.16 (1) | < .01 | 0.09 |
Number comparison test | 0.49 | − 0.71 | − 0.16 | − 0.65 | − 0.18 | − 1.10 | 134.62 (1) | < .01 | 0.22 |
Mental number line | 1.03 | 0.66 | 0.76 | 2.59 | 0.67 | 1.51 | 21.25 (1) | < .01 | 0.04 |
The number-specific EFs | |||||||||
Numerical Stroop test | − 0.79 | − 2.16 | − 1.29 | − 0.38 | 4.55 | 0.78 | 78.91 (1) | < .01 | 0.14 |
Numerical shifting test | − 0.17 | − 1.12 | − 0.60 | − 0.95 | 0.86 | − 0.56 | 59.38 (1) | < .01 | 0.11 |
Mathematics abilities | |||||||||
Number sets test | − 0.11 | 0.08 | 0.74 | − 0.96 | − 1.18 | − 0.72 | 176.49 (1) | < .01 | 0.26 |
Numerical operation test | 1.44 | 0.42 | 1.07 | 1.09 | − 1.10 | − 0.14 | 118.35 (1) | < .01 | 0.19 |