Table 3.
Factor loadings of the neuropsychological measures based on principal component analysis
| Measures | Component 1: Inhibitory and attentional control deficit |
Component 2: Delay aversion | Component 3: Time perception/ working memory deficit |
|---|---|---|---|
| KCPT omission error | 0.55 | − 0.20 | 0.38 |
| KCPT commission error | 0.47 | 0.51 | 0.07 |
| DeFT | 0.80 | 0.05 | − 0.15 |
| MIDA | − 0.02 | 0.84 | 0.01 |
| Picture location | 0.00 | 0.36 | 0.66 |
| Time discrimination | − 0.25 | 0.07 | 0.70 |
| Time reproduction | 0.14 | − 0.23 | 0.69 |
| Eigenvalue | 1.21 | 1.06 | 1.79 |
| % Variance | 17.33 | 15.13 | 25.53 |
Note. KCPT = Conners’ Kiddie Continuous Performance Test; DeFT = Delay frustration task; MIDA = Maudsley Index of Childhood Delay Aversion
Loadings higher than 0.40 are bolded