Table 3.
Liability threshold model fitting analyses
| Model | χ2 | df | P | AIC | RMSEA | χ2dif | dfdif | Pdif | |
|---|---|---|---|---|---|---|---|---|---|
| Understanding number | Full | 3.03 | 8 | .93 | −12.97 | .000 | |||
| Threshold | 12.97 | 9 | .16 | −5.02 | .004 | 9.94 | 1 | < .05 | |
| Common variance | 3.03 | 9 | .96 | −14.97 | .000 | .00 | 1 | > .05 | |
| Scalar | 4.45 | 12 | .97 | −19.55 | .000 | 1.42 | 4 | > .05 | |
| Non-numerical processes | Full | 2.50 | 8 | .96 | −13.50 | .000 | |||
| Threshold | 17.92 | 9 | .04 | −.09 | .012 | 15.42 | 1 | < .05 | |
| Common Variance | 2.50 | 9 | .98 | −15.50 | .000 | .00 | 1 | > .05 | |
| Scalar | 3.55 | 12 | .99 | −20.45 | .000 | 1.05 | 4 | > .05 | |
| Computation and knowledge | Full | 5.62 | 8 | .69 | −10.38 | .000 | |||
| Threshold | 20.25 | 9 | .02 | 2.25 | .018 | 14.63 | 1 | < .05 | |
| Common variance | 5.62 | 9 | .78 | −12.38 | .000 | .00 | 1 | > .05 | |
| Scalar | 8.74 | 12 | .73 | −15.26 | .003 | 3.12 | 4 | > .05 | |
| Composite | Full | 6.02 | 8 | .65 | −9.98 | .000 | |||
| Threshold | 37.09 | 9 | .00 | 19.09 | .033 | 31.07 | 1 | < .05 | |
| Common variance | 6.02 | 9 | .74 | −11.98 | .000 | .00 | 1 | > .05 | |
| Scalar | 8.35 | 12 | .74 | −15.48 | .000 | 2.33 | 4 | > .05 |