Validation of Mental Fatigue Scale Questionnaire in High School Students by Delphi Process

Abstract

In current study, validation of the Mental Fatigue Scale (MFS) for high school students, examining its reliability
and content validity. Mental fatigue significantly impacts students’ cognitive, emotional, and physical wellbeing,
affecting attention, motivation, and even school attendance. Using the Delphi method, a panel of experts
revised the MFS to ensure relevance for adolescents. After administering the modified scale to 110 students,
analysis showed strong content validity (CVR = 0.81) and acceptable internal consistency (Cronbach’s alpha =
0.78). This research confirms MFS as a suitable tool for assessing mental fatigue in high school students, with
recommendations for future studies on larger, more diverse samples.