byrne-developmentofameasure-2017.pdf (758.97 kB)
Development of a measure of sleep, circadian rhythms, and mood: The SCRAM questionnaire
journal contribution
posted on 2017-12-01, 00:00 authored by Jamie ByrneJamie Byrne, B Bullock, G MurraySleep quality, circadian phase, and mood are highly interdependent processes. Remarkably, there is currently no self-report questionnaire that measures all three of these clinically significant functions: The aim of this project was to address this deficit. In Study 1, 720 participants completed a set of potential items was generated from existing questionnaires in each of the three domains and refined to follow a single presentation format. Study 2 used an independent sample (N = 498) to interrogate the latent structure. Exploratory factor analysis was used to identify a parsimonious, three-factor latent structure. Following item reduction, the optimal representation of sleep quality, circadian phase, and mood was captured by a questionnaire with three 5-item scales: Depressed Mood, Morningness, and Good Sleep. Confirmatory factor analysis found the three-scale structure provided adequate fit. In both samples, Morningness and Good Sleep were positively associated, and each was negatively associated with the Depressed Mood scale. Further research is now required to quantify the convergent and discriminant validity of its three face-valid and structurally replicated scales. The new sleep, circadian rhythms, and mood (SCRAM) questionnaire is the first instrument to conjointly measure sleep quality, circadian phase, and mood processes, and has significant potential as a clinical tool
History
Journal
Frontiers in PsychologyVolume
8Article number
2105Pagination
1 - 10Publisher
FrontiersLocation
Lausanne, SwitzerlandPublisher DOI
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eISSN
1664-1078Language
engPublication classification
C1 Refereed article in a scholarly journalUsage metrics
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