Figure 2.

Standardized factor loadings, R² values and error terms are shown for unitary and two factor models for both age groups: model a for youngest children and model c and model d for oldest children. The standardized factor loadings and the R² values are reported into the box for each observed variable. The error terms are shown near the observed variables at the end of the smaller, single-headed arrows. No significant factor loadings are shown with dotted arrows. The correlation between the factors for model d is that next to the curved, double-headed arrow. Note: Circle, circle drawing task; Tower, tower building; Fish, fish task; Animal, animal house; Reverse, reverse categorization; Bear, bear and dragon; DCCS, dimensional change card sort; D/N, day/night stroop.