From: Response shift in health-related quality of life measures in the presence of formative indicators
Type of change | Reflective (Oort’s procedure) | Formative (Our proposal) |
---|---|---|
Reconceptualization | Patt. (Λ1) ≠ Patt. (Λ2) | Patt. (Γ1) ≠ Patt. (Γ2) |
Reprioritization | λi1 ≠ λi2 | γi1 ≠ γi2 |
Reconceptualization (secondary) | – | V(ζ1) ≠ V(ζ2) |
Recalibration (uniform) | τi1 ≠ τi2 | – |
Recalibration (nonuniform) | V(εi1) ≠ V(εi2) | – |
True change in means | M(η1) ≠ M(η2) | f(α1, α2), where α1 = 0 |
True change in the construct variance | V(η1) ≠ V(η2) | – |