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. 2022 Dec 13;13:1024530. doi: 10.3389/fpsyg.2022.1024530

Table 1.

s-SIB – reliability values and explained common variance.

Total PA NA PL IA
Cronbach α (distress) 0.93 0.83 0.84 0.79 0.83
Cronbach α (performance) 0.94 0.82 0.85 0.81 0.81
Cronbach α (distress – changed) 0.93 0.83 0.86 0.77 0.85
Cronbach α (performance – changed) 0.94 0.82 0.86 0.81 0.79
McDonald ω (distress) 0.95 0.91 0.88 0.85 0.89
McDonald ω (performance) 0.95 0.89 0.88 0.86 0.85
McDonald ω (bifactor-distress) 0.95
McDonald ω (bifactor-performance) 0.95
hierarchical McDonald ω (distress) 0.72
hierarchical McDonald ω (performance) 0.77
hierarchical McDonald ω (bifactor-distress) 0.89
hierarchical McDonald ω (bifactor-performance) 0.90
Explained Common Variance (distress) 0.57
Explained Common Variance (performance) 0.66
Explained Common Variance (bifactor-distress) 0.73
Explained Common Variance (bifactor-performance) 0.77

PA, Positive Assertion; NA, Negative Assertion; PL, Expression of and Dealing with Personal limitations; IA, Initiating Assertiveness. Changed = item 3 moved to Initiating Assertiveness, item 13 to Negative Assertion, and removal of item 17.