Please use this identifier to cite or link to this item:
Title: Psychometric properties of the composite scale of morningness: A shortened version
Authors: Pornpitakpan, C. 
Keywords: Chronobiology
Circadian rhythms
Human biological rhythms
Test reliability
Issue Date: 1998
Citation: Pornpitakpan, C. (1998). Psychometric properties of the composite scale of morningness: A shortened version. Personality and Individual Differences 25 (4) : 699-709. ScholarBank@NUS Repository.
Abstract: The Composite Scale of Morningness published in Smith et al. (1989) was translated into Thai and tested on 321 Thai students to assess its cross-cultural applicability. The internal consistency (Cronbach's α = 0.79) of the full Thai Composite Scale of Morningness is comparable to that of the English scale. The shortened 7-item scale improves the full scale by deleting items that are redundant or have poor statistical properties. It retains high internal consistency (Cronbach's α = 0.70). Two components are extracted from the seven items: 'Voluntary Schedule' (items 2, 8, 10 and 11) and 'Alertness After Waking up/Self-Reported Morningness-Eveningness' (items 5, 12 and 9). The mean composite scores of morningness do not differ by gender. © 1998 Elsevier Science Ltd. All rights reserved.
Source Title: Personality and Individual Differences
ISSN: 01918869
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

checked on Feb 2, 2019

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.