“…Out of the 21 non-experimental studies, 16 rely on measurement tools that use self-developed questionnaires, face validity, or scales that were transferred without reflection (e.g., [ 56 , 95 , 111 , 116 , 117 , 118 ]). While some measurement tools lack psychometric data, others require considerable effort to verify because they are referenced in articles that are not available in English [ 93 , 103 , 108 , 120 , 121 , 123 , 131 ].…”