Age-related chronotype differences in Chinese, and reliability assessment of a reduced version of the Chinese Morningness–Eveningness Questionnaire
Article first published online: 22 AUG 2012
© 2012 The Authors. Sleep and Biological Rhythms © 2012 Japanese Society of Sleep Research
Sleep and Biological Rhythms
Volume 10, Issue 4, pages 310–318, October 2012
How to Cite
CARCIOFO, R., DU, F., SONG, N., QI, Y. and ZHANG, K. (2012), Age-related chronotype differences in Chinese, and reliability assessment of a reduced version of the Chinese Morningness–Eveningness Questionnaire. Sleep and Biological Rhythms, 10: 310–318. doi: 10.1111/j.1479-8425.2012.00577.x
- Issue published online: 2 OCT 2012
- Article first published online: 22 AUG 2012
- Accepted 2 June 2012.
- age differences;
- Chinese MEQ;
- reduced MEQ
There has been a lot of international research on morning/evening preference, but relatively little has been done in mainland China. This study investigated whether the trend for increased morning preference in older adults, which has been a consistent finding in chronotype research in many countries, is also found in Chinese. Using the Chinese translation of the Morningness–Eveningness Questionnaire (MEQ), it was found that a sample of 305 Beijing residents, aged 18–87, showed a significant correlation between MEQ score and age (r = 0.595), and that participants aged 50+ showed significantly more morning preference compared to younger participants. Additionally, a reliability assessment of the 5-question reduced MEQ (rMEQ) was undertaken. Test–retest assessment, involving a separate sample (n= 114), showed significant correlations between rMEQ and MEQ scores (r = 0.768), and between chronotype classifications (r = 0.524), supporting the reliability of the Chinese rMEQ.