Turkish version of Morningness-Eveningness Questionnaire (MEQ)

The purpose of this study was to provide validity and reliability of the Turkish version of the Morningness-Eeveningness Questionnaire (MEQ). The Turkish version of the scale was administered to the 171 healthy participants (87 men and 84 women) twice in different times. The internal consistency of the each question and total scores of the scale was examined by carrying out Cronbach's alpha statistic and Pearson correlation analysis. The test-retest reliability of the total MEQ scores was researched by applying dependent sample t-test and Pearson correlation analysis in two different application times. The reliability was satisfactory (Cronbach's alpha=0.81). Points of the questions were found significantly and positively correlated with the total point. There is not a significant change in two different application times. Internal consistency of the Turkish version was found high in the present study. The scale is adequate to distinguish "morning" and "evening" types in Turkish population.