Table 2 Rasch model statistics for the CPQ including the baseline and the best fit analyses of sample A (n = 400) and replication with sample B (n = 400)
Analyses | Person mean | Goodness of fit | PSI | Unidimensionality t-tests | |||
|---|---|---|---|---|---|---|---|
Value | SD | χ2 (df) | p | % | Lower bound (unidimensional) | ||
Baseline (A1) | − 0.07 | 0.72 | 85.61(36) | < 0.001 | 0.77 | 6.0 | 3.9 (yes) |
Best fit (A2) | − 0.09 | 0.73 | 86.43 (72) | 0.118 | 0.78 | 3.5 | 1.4 (yes) |
Baseline (B1) | − 0.13 | 0.73 | 125.76 (36) | < 0.001 | 0.78 | 4.3 | 2.1 (yes) |
Replication (B2) | − 0.18 | 0.81 | 189.38 (72) | 0.081 | 0.80 | 3.8 | 1.6 (yes) |