Abstract:
Procrastination is a common problem among university students and may have negative consequences on students' academic performance, physical and mental health. Therefore, the aim of this study was to investigate the relationships between procrastination and morningness-eveningness preference, happiness and academic achievement. The data was collected from 303 university students aged between 19 and 22 years. Tuckman procrastination scale, composite scale of morningness (CSM) and the Oxford happiness questionnaire short-form were used as data collecting tools. Results indicated that the prevalence of academic procrastination among university students was 48.5%. Meanwhile, no statistical difference was found between procrastination scores in terms of gender and grade level. Morningness was the main predictor of academic procrastination. Academic achievement and happiness also contributed to the variance explained in academic procrastination. As a result of this study, it was found that happiness, academic achievement and morningness scores decreased with the increase of procrastination scores.