Table 3.
Main descriptive results and correlations of the study.
| Variable | M | SD | Correlation |
||
|---|---|---|---|---|---|
| MR maturity | Age | SES composite | |||
| Age in months | 0.54*** | 1 | -0.02 | ||
| Socioeconomic variables | |||||
| SES composite z-score | -0.03 | 0.75 | -0.13 | -0.02 | 1 |
| Annual Household income z-score | 0 | 1 | -0.13 | -0.05 | 0.73*** |
| Maternal education z-score | 0 | 1 | -0.09 | 0.08 | 0.74** |
| Paternal education z-score | 0 | 1 | -0.04 | -0.11 | 0.61*** |
| Cognitive variables | |||||
| Intellectual functioning (WASI IQ) | 108.6 | 9.9 | 0.17 | 0.16 | 0.03 |
| Attentional controla | 82.5 | 21.1 | 0.36** | 0.64*** | 0.05 |
| Verbal fluencyb | 30.3 | 9.3 | 0.49*** | 0.58*** | -0.19 |
| Inhibitionc | 74.9 | 26.0 | -0.43*** | -0.66*** | |
| Socio-cognitive variables | |||||
| Affect recognitiond | 25.1 | 4.6 | 0.42*** | 0.54*** | -0.22 |
| Empathy (total score)e | 33.2 | 23.4 | 0.21 | 0.34** | -0.09 |
| Cognitive empathyf | 25.5 | 14.2 | 0.22 | 0.32** | -0.10 |
| Affective empathyg | 23.8 | 18.8 | 0.19 | 0.29* | -0.07 |
| Theory of Mindh | 48.7 | 7.8 | 0.32** | 0.44*** | -0.08 |
| First-order false beliefsi | 2.7 | 0.6 | 0.11 | 0.27* | -0.05 |
| Second-order false beliefsj | 2.1 | 0.9 | 0.26* | 0.40** | -0.08 |
| Third-order false beliefsk | 1.9 | 1.0 | 0.40*** | 0.36** | -0.03 |
| Moral reasoningl | 18.3 | 5.3 | 0.56 | -0.13 | |
∗p < 0.05; ∗∗p < 0.01; ∗∗∗p < 0.001. aWISC-IV Cancelation raw total score; bNEPSY-II Word generation raw semantic score; cNEPSY-II Inhibition raw completion time score; dNEPSY-II Affect Recognition raw total score; eGriffith Empathy Measure total score; fGriffith Empathy Measure Cognitive empathy score; gGriffith Empathy Measure Affective empathy score; hTheory of Mind Picture Stories total score; iTheory of Mind Picture Stories First-order false beliefs score; jTheory of Mind Picture Stories task Second-order false beliefs score; kTheory of Mind Picture Stories task Third-order false beliefs score; lSo-Moral, total justification score.