A self-assessment questionnaire to determine morningness-eveningness in human circadian rhythms
Activity counts measure attention, not model quality. Missing counts are unknown. Publication status follows the linked source; a listed venue alone does not confirm peer review.
Morningness–Eveningness Questionnaire (MEQ); preference-based chronotype; the instrument behind Ultrahuman's AutoMEQ.
- Venue: Int J Chronobiol 1976
- Venue
- Int J Chronobiol 1976
- Published
- 1976
- DOI
- Not reported
- arXiv
- Not reported
- PMID
- Not reported
- Licence
- Not reported
- Signals
- Not reported
- Form factor
- Not reported
- Subjects
- Not reported
- Code
- Not reported
- Added
- Oct 15, 2026
Abstract
An English language self-assessment Morningness-Eveningness questionnaire is presented and evaluated against individual differences in the circadian vatiation of oral temperature. 48 subjects falling into Morning, Evening and Intermediate type categories regularly took their temperature. Circadian peak time were identified from the smoothed temperature curves of each subject. Results showed that Morning types and a significantly earlier peak time than Evening types and tended to have a higher daytime temperature and lower post peak temperature. The Intermediate type had temperatures between those of the other groups. Although no significant differences in sleep lengths were found between the three types, Morning types retired and arose significantly earlier than Evening types. Whilst these time significatly correlated with peak time, the questionnaire showed a higher peak time correlation. Although sleep habits are an important déterminant of peak time there are other contibutory factors, and these appear to be partly covered by the questionnaire. Although the questionnaire appears to be valid, further evaluation using a wider subject population is required.
Verbatim fromEurope PMC· Abstract via Europe PMC; © the authors/publisher
Cite
@article{horneostbergmeq19761976,
title = {{A self-assessment questionnaire to determine morningness-eveningness in human circadian rhythms}},
author = {Horne JA and Östberg O},
year = {1976},
journal = {Int J Chronobiol 1976}
}History
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