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OBJECTIVE To translate and validate the “NASA Task Load Index” (NASA-TLX) that measures employees’ workload in Greek. METHOD The study population included nurses, since high levels of workload are identified among this professional sector. We applied the forward-backward translation method to translate “NASA-TLX” into Greek. We explored face validity, construct validity, and convergent validity of “NASA-TLX”. We used two work-related tools to establish convergent validity of “NASA-TLX”. In particular, we used the “Quiet Quitting Scale” that measures the phenomenon of “quiet quitting” among workers, and the “Single item burnout scale” that measures job burnout. Additionally, we explored the reliability of “NASA-TLX” by conducting test-retest method and calculating Cronbach’s alpha coefficient. RESULTS Cronbach’s alpha coefficient was 0.71, indicating acceptable reliability. Intraclass correlation coefficients for the six questions of “NASA-TLX” were statistically significant (p<0.001 in all questions) and ranged from 0.58 to 0.81, indicating moderate-to-strong correlation. According to the results of the confirmatory factor analysis, the Greek version of the “NASA-TLX” showed excellent construct validity and was a one-dimensional tool as the original English version of the scale. Increased workload was associated with increased level of quiet quitting among workers (r=0.10, p=0.23). Moreover, increased workload was associated with increased job burnout (r=0.60, p<0.001). CONCLUSIONS The Greek version of the “NASA Task Load Index” has high reliability and validity and it is a short, simple and valid tool to measure workload among workers. [ABSTRACT FROM AUTHOR]

OBJECTIVE The translation and cross-cultural adaptation of the “Global Transformational Leadership scale” into Greek. METHOD The original questionnaire was in English and the target version was in Greek. The process of translation into Greek was applied and then the translation of the Greek version into English, and finally the translation and cross-cultural adaptation process was checked. To test the reliability of the questionnaire, a test-retest study was conducted. Confirmatory factor analysis was performed to check validity. RESULTS The kappa indices in initial measurement and re-measurement for the seven questions of “Global Transformational Leadership scale” were found to have statistically significant relationships, indicating high reliability of the questionnaire. Furthermore, the high reliability of the questionnaire is also indicated by the fact that the intraclass correlation coefficient for the total score was extremely high and, more specifically, equal to 0.95 (95% confidence interval: 0.89 to 0.98, p<0.001). According to the results of the confirmatory factor analysis, the Greek version of the “Global Transformational Leadership scale” showed excellent fit, as all indicators had acceptable values. Moreover, the weighted regression weights had high values as they ranged from 0.74 to 0.89. Thus, it can be concluded that “Global Transformational Leadership scale” has high construct validity and is unidimensional. CONCLUSIONS The Greek version of the “Global Transformational Leadership scale” has high reliability and validity and is a valid tool to assess the transformational leadership style of those in positions of responsibility. [ABSTRACT FROM AUTHOR]