Supplementary Table11. Summary of psychometric properties obtained in this studya

Reliability / Construct validity
Test-retest / Internal consistency / Convergent validityb / Discriminant validity / ROC analysis
Measures / Item-level / Scale-level / Item-level / Scale-level
SATQ / ◯ / ◯ / ◯ / ◯ / ◯ / ◯ / ◯
BAPQ / ◯ / ◯ / ◯ / ◯ / ◯ / ◯ / ◯
SRS2-AS / ◯ / ◯ / ◯ / ◯ / ☓ / ☓ / ◯
SRS2-AS30 / ◯ / ◯ / ◯ / ◯ / ☓ / ☓ / ◯
SRS2-AS11 / ◯ / ◯ / ◯ / ◯ / ☓ / ☓ / ◯
AQ / ◯ / ◯ / ☓ / ◯ / ☓ / ◯ / ◯
AQ-m / ◯ / ◯ / ☓ / ◯ / ☓ / ◯ / ◯
AQ28 / ◯ / ◯ / ◯ / ◯ / ◯ / ◯ / ☓
AQ20 / ◯ / ☓ / ☓ / ◯ / ☓ / ◯ / ◯
AQ10 / ◯ / ☓ / ◯ / ◯ / ◯ / ◯ / ☓
AQ-J21 / ◯ / ◯ / ◯ / ◯ / ☓ / ◯ / ◯
AQ-J10 / ◯ / ☓ / ☓ / ◯ / ☓ / ◯ / ◯

a “◯” indicate positive psychometric properties whereas “☓” indicates less optimal psychometrics, as defined below.

Test-retest reliability: Cronbach’s alpha < 0.7

Internal consistency reliability: Cronbach’s alpha < 0.7

Convergent validity (item-level): the percentage of the times corrected item-scale correlations exceed 0.2 < 70%.

Convergent validity (scale-level): a correlation coefficient between QAT measures < 0.6.

Discriminant validity (item-level): the percentage of items correlating significantly higher with their own scale than with competing scales < 70%.

Discriminant validity (scale-level): a correlation coefficient between QAT measures < 0.6.

ROC analysis: statistically significant decrease of AUC compared with the AQ.

b The results of item-level convergent validity represent those only for the non-clinical sample for brevity and clarification.