Table 3 SDL abilities as measured with SRSSDL_Ita and SDLI: Scores and internal consistency
|  | Average (CI 95 %) | Median | Skewness | Kurtosis | Range | αa |
|---|---|---|---|---|---|---|
SRSSDL_Ita Factors (min–max score) | ||||||
 Factor 1 Awareness (7–35) | 28.52 (28.19–28.86) | 29 | −.429 | −.047 | 17–35 | 0.828 |
 Factor 2 Attitudes (8–40) | 32.94 (32.58–33.29) | 33 | −.304 | .137 | 19–40 | 0.694 |
 Factor 3 Motivation (6–30) | 24.17 (23.85–24.49) | 24 | −.246 | −.313 | 13–30 | 0.806 |
 Factor 4 Learning strategies (4–20) | 15.08 (14.82–15.34) | 15 | −.237 | .083 | 6–20 | 0.646 |
 Factor 5 Learning methods (5–25) | 20.37 (20.09–20.66) | 20 | −.158 | −.177 | 10–25 | 0.846 |
 Factor 6 Learning activities (4–20) | 16.16 (15.91–16.40) | 16 | −.235 | −.530 | 8–20 | 0.746 |
 Factor 7 Interpersonal skills (4–20) | 16.24 (15.99–16.50) | 16 | −.298 | −.310 | 8–20 | 0.800 |
 Factor 8 Construction knowledge (2–10) | 7.28 (7.08–7.49) | 8 | −.537 | −.137 | 2–10 | 0.903 |
 Total score (40–200) | 160.79 (159.10–162.57) | 160 | −.108 | −.057 | 112–200 | 0.931 |
SDLI Factors (min–max score) | ||||||
 Factor 1 Learning motivation (6–30) | 25.85 (25.59–26.12) | 26 | −.456 | −.218 | 17–30 | 0.752 |
 Factor 2 Planning and implementing (6–30) | 24.22 (23.91–24.54) | 24 | −.217 | −.204 | 12–30 | 0.860 |
 Factor 3 Self-monitoring (4–20) | 16.62 (16.44–16.80) | 16 | .049 | −.647 | 11–20 | 0.821 |
 Factor 4 Interpersonal communication (4–20) | 15.87 (15.67–16.09) | 16 | −.466 | .925 | 5–20 | 0.640 |
 Total score (20–100) | 82.57 (81.79–83.38) | 83 | −.205 | −.224 | 54–100 | 0.903 |