Composite scales of morningness and preferences: preliminary validity data in Peruvian undergraduates



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Díaz Morales, Juan Francisco and Sánchez López, María Pilar (2005) Composite scales of morningness and preferences: preliminary validity data in Peruvian undergraduates. Ergonomics, 48 (4). pp. 354-63. ISSN 0014-0139

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The aim of this study is to offer preliminary results about the validity of the composite morningness scale (CS) and the early/late preferences scale (PS) in a Peruvian sample. The relationship of both scales with the preferred rising and retiring times was analysed, along with the level of self-reported alertness. In Bohle et al.'s (2001) work, the relationship between morningness and preferred rising and retiring times was higher over the weekend than on weekdays. This difference explained the dispositional nature of morningness, due to the possible lesser influence of time schedules over the weekend in individuals' preferences. This result is replicated in a group of 139 Peruvian undergraduates, aged between 18 and 29 years (M = 21.73), of whom 78.4% were women. The relationship between morningness and (actual) normal rising and retiring times on weekdays and over the weekend is considered. The results partially confirm Bohle et al.'s (2001) hypothesis about preferred rising and retiring times and their relationship with the PS, and actual rising time and its relationship with the CS and PS. The differences in the level of self-reported alertness between morning, intermediate and evening-oriented groups provide support for the validity of both scales. Finally, the scores of CS and PS in Peruvian undergraduates are similar to those found by Smith et al. (2002) in university students from six countries.

Item Type:Article
Uncontrolled Keywords:Morningness, Eveningness, Time-of-day, Actual and preferred wake, Sleep behaviour, Alertness
Subjects:Medical sciences > Psychology > Differential psychology
ID Code:37134
Deposited On:07 Mar 2019 11:27
Last Modified:07 Mar 2019 11:27

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