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Psychometric evaluation of the early/late preferences scale
Citation
Bohle, P and Tilley, AJ and Brown, S, Psychometric evaluation of the early/late preferences scale, Ergonomics, 44, (10) pp. 887-990. ISSN 0014-0139 (2001) [Refereed Article]
DOI: doi:10.1080/00140130110064694
Abstract
This paper examines the psychometric quality of the Early/Late Preferences Scale (PS) relative to that of the Composite Morningness Scale (CS). Questionnaires were completed by 670 undergraduate students aged 16-37 years (mean 22.5), of whom 64% were female. Both scales displayed satisfactory inter-item correlations and similar total mean scores to those reported previously, although the CS had higher variability. Principal axis factor analysis produced single-factor solutions for both scales, although loadings for Items 7 and 9 on the PS were low. Internal consistencies for both scales were good (PS = 0.86, CS = 0.90) with only a small improvement achieved by deleting Items 7 and 9 from the PS. Test-retest reliability over 11 weeks was good for both scales (PS = 0.92, CS = 0.89). Differences between morning, evening and intermediate groups in self-rated alertness at different times of day, and significant correlations with other indices of morning-evening orientation, provided evidence of validity for both scales. These results indicate that PS is psychometrically comparable with CS. In view of its simpler format and lower cultural specificity, PS may be considered a preferable measure for most applications.
Item Details
Item Type: | Refereed Article |
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Research Division: | Commerce, Management, Tourism and Services |
Research Group: | Strategy, management and organisational behaviour |
Research Field: | Organisational behaviour |
Objective Division: | Law, Politics and Community Services |
Objective Group: | Work and labour market |
Objective Field: | Work and labour market not elsewhere classified |
UTAS Author: | Bohle, P (Professor Philip Bohle) |
ID Code: | 138827 |
Year Published: | 2001 |
Web of Science® Times Cited: | 38 |
Deposited By: | TSBE |
Deposited On: | 2020-05-01 |
Last Modified: | 2020-05-01 |
Downloads: | 0 |
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