Fig. 6: Conceptual and statistical representation of the multilevel measurement model of wisdom perception.
From: Dimensions of wisdom perception across twelve countries on five continents

A At the within-individual level, different comparison targets are related to a reference target; at the between-individual level a reference target is related to an aggregate of all comparison targets. B The items are wisdom-related characteristics; at the between-individual level, they are represented by their intercepts. Factor indicators at both levels have residuals that are not shown. The factor loadings were constrained to be equal across the levels (i.e., isomorphic).