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Psychometric properties of the Pre-Sleep Arousal Scale in a large community sample
Örebro universitet, Institutionen för juridik, psykologi och socialt arbete.
Örebro universitet, Institutionen för juridik, psykologi och socialt arbete.ORCID iD: 0000-0003-2008-0784
2012 (English)In: Journal of Psychosomatic Research, ISSN 0022-3999, E-ISSN 1879-1360, Vol. 72, no 2, 103-110 p.Article in journal (Refereed) Published
Abstract [en]

Objective: The purpose was to examine the psychometric properties of the Pre-Sleep Arousal Scale.

Methods: From a randomly selected sample of the general population (N = 5000), 2327 participants completed a survey on nighttime symptoms, daytime symptoms, health outcomes, and psychological processes. The study sample consisted of 1890 participants who did not fulfill criteria for a sleep disorder other than insomnia.

Results: Findings indicated that the PSAS did not produce an adequate factorial solution. When three problematic items were removed, the solution, accounting for 48.5% of the variance, improved (PSAS-13). One subscale, cognitive arousal (alpha = .88), consisted of five items (37.1%), and one subscale, somatic arousal (alpha = .72), of eight items (11.4%). The two factors were significantly inter-correlated (rho = .51) and associated with the PSAS-13 (rho = .91, rho = .80). Among those with insomnia, a shortened PSAS (PSAS-14) was established, which consisted of a cognitive and a somatic subscale (48.6% of the variance). The PSAS-13 and the two subscales showed discriminant validity between three sleep groups (normal sleep, poor sleep, and insomnia disorder) (R-2 = .24-.34). The PSAS-13 and the subscales demonstrated convergent validity with measures on sleep-related worry, sleep-related beliefs, anxiety, and depression. The PSAS-13 and the two subscales were significantly correlated with sleep parameters and daytime impairment.

Conclusion: Though acceptable psychometric properties were established for the PSAS, the cognitive sub-scale's focus upon general pre-sleep arousal and the relatively low variance accounted for calls for further work on and a possible re-conceptualization of the PSAS.

Place, publisher, year, edition, pages
2012. Vol. 72, no 2, 103-110 p.
Keyword [en]
Insomnia, Sleep, Arousal, Scale
National Category
Applied Psychology
Research subject
Psychology
Identifiers
URN: urn:nbn:se:kau:diva-38374DOI: 10.1016/j.jpsychores.2011.10.005ISI: 000299856800003OAI: oai:DiVA.org:kau-38374DiVA: diva2:868863
Projects
Prospective Investigation on Psychological Processes for Insomnia (PIPPI)
Available from: 2012-02-27 Created: 2015-11-12 Last updated: 2016-09-15Bibliographically approved

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Jansson-Fröjmark, MarkusNorell-Clarke, Annika
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