BackgroundGeneralized Anxiety Disorder-7 (GAD-7) is a widely used self-report that assesses generalized anxiety disorder symptomatology. Whilst previous studies have reported good-to-excellent psychometric properties across different languages, it remains unclear whether GAD-7 measures the same construct across Western and non-Western countries. Here, we tested the hypothesis that the GAD-7 is measurement invariant across Western and non-Western countries and the hypothesis that a less severe GAD symptomatology can be found in non-Western countries.MethodsThe present study employed an online survey to examine the GAD-7's measurement invariance (MI) across community samples from Indonesia, Germany, and the USA (N = 2350). MI was computed using multiple-group confirmatory factor analyses with a general factor model of the GAD-7.ResultsThe general factor of the GAD-7 had …