Table 1.
The number of people in each age group.
Table 2.
Fit statistics for the facet models.
Fig 1.
Age-related measurement invariance in the NEO-PI-3 facets: the changes in Comparative Fit Indices and Root Mean Square Error of Approximation values as a result of imposing increasingly strict parameter constraints in the measurement models of different age groups.
Fig 2.
Age differences in the 30 NEO-PI-3 facets before (dashed lines) and and after (solid lines) establishing partial measurement invariance.
Horizontal axis represents 12 age groups. Vertical axis represents the mean age group scores (in the standard deviation units of the youngest group).
Fig 3.
Latent trait scores of three facets and scores of single items that had their intercept equality constraints relaxed to obtain partial strong measurement invariance.
Horizontal axis represents 12 age groups. Vertical axis represents the mean age group scores (in the standard deviation units of the youngest group).
Fig 4.
Age differences in NEO-PI-3 facet scores.
The scores are based on measurement models that demonstrated partial measurement invariance. The facets are number according to the NEO-PI-3 manual (see also Table 2). Horizontal axis represents 12 age groups. Vertical axis represents the mean age group scores (in the standard deviation units of the youngest group).
Table 3.
Fit statistics for the models of the FFM domains.
Fig 5.
Age differences in FFM domain scores before and after establishing partial measurement invariance.
Horizontal axis represents 12 age groups. Vertical axis represents the mean age group scores (in the standard deviation units of the youngest group).