0654 Association Between Chronotype and Mental Health in Canadian University Students
Bibliographic record
Abstract
Chronotype (diurnal preference) is related to mental health, with evening chronotypes being more susceptible to psychological disorders than intermediate and morning types. The present study investigated the relationship between chronotype and mental health in Canadian university students. We surveyed 2,361 students aged 18–35 enrolled at Memorial University of Newfoundland. Participants completed the Morningness-Eveningness Questionnaire (MEQ), the Hospital Anxiety and Depression Scale (HADS), and the Kessler Psychological Distress Scale (K10). We conducted separate Bonferroni-corrected one-way ANCOVAs with post-hoc paired comparisons to determine the relationship between chronotype and mental health variables, adjusted for the effect of age. 72.5% of participants were female with an average age of 22.2 years (SD=3.73). 55.6% of participants were classified as intermediate, with 33.9% being evening type, and 10.4% as morning type. 27.9% and 61.7% of the sample were in the clinically significant range on the depression and anxiety scales, respectively. Overall, psychological distress was in the mild to moderate range (M=24.31, SD=8.51). There was a significant difference in depression scores between chronotype [F(2,2350)=37.47, p<.0001], with intermediate types reporting greater levels of depression (M=5.09, SE=.10) than morning types (M=4.06, SE=.24), and evening types reporting greater depression scores (M=6.24, SE=.14) than both morning and intermediate types. The relationship between anxiety and chronotype was also significant [F(2,2350)=17.972, p<.0001], with evening types being more likely to report greater levels of anxiety (M=10.13, SE=.17) than both intermediate (M=9.00, SE=.13) and morning types (M=8.48, SE=.30). Finally, intermediates (M=23.52, SE=.23) were more likely than morning types (M=21.88, SE=.54), and evening types (M=26.60, SE=.32) were more likely than both intermediates and mornings to report greater levels of distress [F(2,2216)=41.76, p<.0001]. This study supports the relationship between evening chronotype, depressive symptoms, anxiety, and psychological distress among university students. Students with evening chronotypes are at risk for poorer academic, psychological, and physical functioning. Education and/or intervention is warranted to reduce the potential negative effects of eveningness chronotype. Support (If Any):
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".