Table 3.
Genetic and environmental proportions of variance
| Variable | A2 | C2 | E2 | CFI | TLI | RMSEA | Chi-Square |
|---|---|---|---|---|---|---|---|
| Mastery | .327 | .036 | .637 | 1.000 | 1.052 | .000 | 24.574 |
| (.090,.564) | (−.178,.250) | (.578,.696) | |||||
| Performance approach | .274 | .000 | .726 | .817 | .740 | .028 | 37.913 |
| (.176,.372) | - | (.628,.824) | |||||
| Performance avoidance | .238 | .000 | .762 | 1.000 | 1.033 | .000 | 29.511 |
| (.175,.301) | - | (.699,.825) | |||||
| School Mastery | .000 | .378 | .622 | .891 | .905 | .006 | 39.512 |
| - | (.302,.454) | (.546,.698) | |||||
| School Performance approach | .215 | .123 | .662 | .373 | .454 | .064 | 42.010 |
| (−.216,.646) | (−.214,.460) | (.499,.825) | |||||
| School Performance avoidance | .153 | .209 | .637 | .562 | .618 | .080 | 48.261 |
| (−.155,.461) | (.033,.385) | (.186,1.088) | |||||
| Parent Mastery | .441 | .000 | .559 | 1.000 | 1.005 | .000 | 3.785 |
| (.374,.508) | - | (.492,.626) | |||||
| Parent Performance | .340 | .000 | .660 | 1.000 | 1.058 | .000 | 29.171 |
| (.183,.497) | - | (.503,.817) | |||||
| Peer relationship | .451 | .000 | .549 | .891 | .905 | .029 | 33.256 |
| (.365,.537) | - | (.463,.635) | |||||
| Cognitive Ability | .629 | .113 | .259 | 1.000 | 1.033 | .000 | 24.095 |
| (.453,.805) | (−.083,.309) | (.212,.306) | |||||
| Conscientiousness | .252 | .000 | .748 | .883 | .898 | .029 | 38.386 |
| (.191,.313) | - | (.687,.809) | |||||
| Openness | .320 | .000 | .680 | 1.000 | 1.123 | .000 | 19.263 |
| (.263,.377) | - | (.623,.737) | |||||
Note. The effect size estimates reflect the proportion of variance attributable to genetic or environmental sources. A2 = additive genetic variance; C2 = shared environmental variance; E2 = non-shared environmental variance; RMSEA = Root Mean Square Error of Approximation; CFI =Comparative Fit Index; TLI = Tucker Lewis Index; 95% confidence intervals are presented in parentheses.