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Morningness or morning affect? A short composite scale of morningness
Citation
Di Milia, L and Bohle, P, Morningness or morning affect? A short composite scale of morningness, Chronobiology International, 26, (3) pp. 494-509. ISSN 0742-0528 (2009) [Refereed Article]
DOI: doi:10.1080/07420520902820954
Abstract
The Composite Scale of Morningness (CSM) is a widely used measure of behavioral
temporal preference, and it is highly reliable across cultures. There are several competing models concerning its factor structure. We used confirmatory factor analysis
(CFA) to replicate the two-and three-factor models, and, in addition, we examined
the utility of the four-item morning affect scale as a proxy for the full CSM. We
tested these models in a large student sample (N ¼ 1396). The chi-square result for
the two- and three-factor models indicated they did not adequately fit the data, and
the modification indices suggested some items could be correlated. Allowing these
items to correlate failed to produce a non-significant chi-square result, but some
improvements to the incremental fit indices and root mean square error of approximation (RMSEA) were found. In particular, the three-factor model seemed satisfactory. CFA of the morning-affect scale also failed to fit the data, but the incremental
fit indices and RMSEA were strong. For each of these three models, there was no
significant difference between the invariant (no sex difference) and variant (sex
difference) models. However, in each model, a critical ratio difference was found
on the standardized regression weights between males and females on item 12. The
morning-affect scale had high reliability (0.83) and demonstrated satisfactory construct
validity against the preferences scale and time to sleep and wake. In addition, high and
low morning-affect groups reported significant sleepiness differences by time of day.
These results suggest the morning-affect scale may be a useful proxy for the full
scale. Furthermore, the items make no reference to time-of-day and may better
facilitate cross-cultural research. Studies using population-based samples are recommended to further test the efficacy of the morning-affect scale.
Item Details
Item Type: | Refereed Article |
---|---|
Keywords: | alertness, circadian, morningness, shift work |
Research Division: | Commerce, Management, Tourism and Services |
Research Group: | Strategy, management and organisational behaviour |
Research Field: | Organisational behaviour |
Objective Division: | Health |
Objective Group: | Public health (excl. specific population health) |
Objective Field: | Behaviour and health |
UTAS Author: | Bohle, P (Professor Philip Bohle) |
ID Code: | 138722 |
Year Published: | 2009 |
Web of Science® Times Cited: | 35 |
Deposited By: | TSBE |
Deposited On: | 2020-04-24 |
Last Modified: | 2020-04-24 |
Downloads: | 0 |
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