Table 1. Correlation matrix of the seven TCI dimensions and WISC- IV indices for screen-negative and positive twins (whole sample, that is, twins #1 and #2).
138 screen-negative co-twins and 40 randomly chosen controls (N = 178) (blue fields) and screen-positive children N = 192 (white fields).
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperament | Novelty Seeking (1) | −.15* | −.02 | −.31** | −.27** | .03 | −.32** | −.084 | −.05 | −.09 | −.04 | −.03 | |
| Harm Avoidance (2) | −.16* | .10 | −.22** | −.08 | −.04 | −.44** | .00 | .06 | .07 | .11 | .10 | ||
| Reward Dependence (3) | .02 | .12 | .17* | .60** | .26** | .19* | −.06 | −.01 | .09 | .08 | .04 | ||
| Persistence (4) | −.40** | −.13 | .04 | .28** | .19** | .27** | .18* | .10 | .16* | .08 | .15* | ||
| Character | Cooperativeness (5) | −.15* | −.12 | .43** | .26** | .28** | .45** | .04 | .07 | .16* | .17* | .10 | |
| Self-transcendence (6) | .00 | .09 | .10 | .08 | .10 | −.09 | −.10 | −.19* | −.02 | −.09 | −.11 | ||
| Self-directedness (7) | −.29** | −.38** | .07 | .30** | .46** | −.25** | .00 | .03 | .04 | .06 | −.02 | ||
| Cognitive ability | Verbal Comprehension Index (8) | −.07 | .03 | −.00 | .24** | .11 | −.08 | .02 | .49** | .47** | .32** | .76** | |
| Perceptual Reasoning Index (9) | −.03 | .00 | −.03 | .18* | .04 | −.08 | .04 | .67** | .40** | .58** | .73** | ||
| Working Memory Index (10) | −.07 | −.05 | −.06 | .16* | .01 | −.07 | .02 | .58** | .55** | .35** | .65** | ||
| Processing Speed Index (11) | −.05 | .01 | .07 | .05 | .09 | −.06 | −.04 | .42** | .54** | .44** | .64** | ||
| Full Scale IQ (12) | −.07 | .02 | .00 | .23** | .09 | −.08 | .016 | .90** | .85** | .75** | .67** |
Notes.
*
Correlation is significant at the 0.05 level (2-tailed).
**
Correlation is significant at the 0.01 level (2-tailed).