Table A1.
Measures | Time | N | Min | Max | M | SD | Skewness | Kurtosis | Reliability# |
---|---|---|---|---|---|---|---|---|---|
Nonverbal intelligence | t1 | 189 | 3 | 82 | 58.98 | 8.80 | −1.35 | 7.89 | |
t2 | 194 | 44 | 85 | 68.57 | 7.18 | −0.48 | 0.91 | ||
t3 | 193 | 11 | 42 | 29.44 | 5.65 | −0.34 | −0.01 | 0.69 | |
t4 | 174 | 79 | 147 | 120.49 | 14.48 | −0.15 | −0.68 | 0.70 | |
t5 | 145 | 18 | 46 | 39.68 | 4.73 | −1.36 | 2.50 | 0.74 | |
Verbal intelligence | t1 | 207 | 21 | 64 | 46.36 | 8.41 | −0.42 | 0.20 | 0.74 |
t2 | 196 | 11 | 73 | 35.97 | 13.39 | 0.33 | −0.60 | 0.78 | |
t3 | 192 | 19 | 102 | 62.09 | 13.94 | −0.08 | 0.17 | 0.77 | |
t4 | 174 | 9 | 29 | 19.25 | 4.08 | −0.10 | −0.76 | 0.76 | |
t5 | 151 | 8 | 31 | 21.70 | 4.51 | −0.44 | −0.03 | 0.79 | |
Serial word span | t1 | 207 | 0 | 6 | 3.47 | 0.97 | −1.12 | 3.66 | |
t2 | 197 | 0 | 6 | 4.15 | 0.88 | −1.03 | 3.52 | ||
t3 | 187 | 2 | 7 | 4.78 | 0.86 | −0.02 | 0.55 | ||
Unconstrained word span | t1 | 207 | 1 | 6 | 3.84 | 0.80 | −0.21 | 0.08 | |
t2 | 197 | 3 | 6 | 4.46 | 0.82 | −0.13 | −0.52 | ||
t3 | 187 | 2 | 7 | 5.28 | 0.90 | −0.37 | 0.15 | ||
Total nr. of correct words (listening span) | t1 | 207 | 20 | 211 | 99.39 | 36.99 | 0.47 | 0.13 | |
t2 | 195 | 40 | 238 | 141.86 | 45.66 | 0.10 | −1.04 | ||
t3 | 193 | 61 | 232 | 157.32 | 43.09 | −0.09 | −1.18 | ||
t4 | 170 | 68 | 339 | 226.05 | 53.80 | 0.23 | −0.19 | ||
t5 | 151 | 65 | 340 | 214.35 | 55.57 | 0.10 | 0.13 | ||
Total nr. of correct sentences (listening span) | t1 | 208 | 2 | 38 | 14.05 | 6.63 | 0.69 | 0.69 | 0.83 |
t2 | 195 | 5 | 56 | 21.56 | 8.58 | 0.48 | 0.15 | 0.85 | |
t3 | 193 | 6 | 40 | 24.83 | 8.14 | 0.02 | −0.99 | 0.84 | |
t4 | 170 | 9 | 61 | 38.09 | 9.72 | 0.20 | 0.06 | 0.98 | |
t5 | 151 | 7 | 59 | 36.54 | 10.21 | 0.07 | 0.22 | 0.98 | |
Word decoding speed | t2 | 186 | 2 | 9 | 4.29 | 1.51 | 1.22 | 1.26 | 0.83 |
Text comprehension (Moon) | t5 | 150 | 11 | 48 | 34.53 | 8.07 | −0.71 | −0.01 | 0.69 |
Text comprehension (Duchess) | t5 | 150 | 0 | 7 | 4.70 | 1.76 | −0.34 | −0.84 | 0.66 |
Spelling | t2 | 194 | 2 | 18 | 11.20 | 4.01 | −0.46 | −0.59 | 0.84 |
t3 | 192 | 17 | 60 | 49.81 | 8.22 | −1.29 | 1.67 | 0.89 | |
t4 | 174 | 15 | 62 | 46.04 | 8.10 | −0.53 | 0.53 | 0.86 | |
t5 | 151 | 15 | 63 | 46.98 | 7.92 | −1.09 | 2.00 | 0.88 | |
Standard mathematical problems | t2 | 157 | 10 | 26 | 20.75 | 3.54 | −0.81 | 0.23 | |
Reasoning mathematical problems | t2 | 157 | 5 | 18 | 12.80 | 2.83 | −0.54 | −0.18 | |
Mathematical relation task 1 | t3 | 193 | 0 | 6 | 3.24 | 2.16 | 0.04 | −1.62 | 0.82 |
Mathematical relation task 2 | t3 | 193 | 0 | 6 | 3.56 | 2.13 | −0.21 | −1.61 | 0.82 |
Word problems | t3 | 193 | 0 | 4 | 2.03 | 1.01 | −0.36 | −0.62 | |
Numerical problems | t4 | 173 | 0 | 6 | 1.55 | 1.18 | 0.70 | 0.43 | 0.54 |
Word problems | t4 | 174 | 0 | 9 | 3.25 | 1.80 | 0.81 | 0.57 | 0.64 |
# Note: Reliabilities (Cronbach’s alpha) in this table are based on data in the LOGIC study (e.g., subscale or item level) and thus differ from those reported in the text. For nonverbal intelligence at t1 and t2, mathematical problems at t2 and word problems at t3, and for working memory, only sum scores were available in the data of the LOGIC study. For the total scores of working memory t1 to t5, reliabilities (Cronbach’s alpha) are provided in the rows of the listening span for sentences based on the combination of all sum scores of working memory tasks (listening span (words and sentences) and serial and unconstrained word span).