ORCID Profile
0000-0001-6629-0782
Current Organisation
UiT The Arctic University of Norway
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Publisher: Hogrefe Publishing Group
Date: 03-2020
DOI: 10.1027/1015-5759/A000509
Abstract: Abstract. Resilience has become increasingly important in clinical and health psychology, but only few scales have received good psychometric ratings for assessing various outcomes of resilience. The Resilience Scale for Adults (RSA) is one of the best psychometrically rated scales and has been validated among Norwegian s les. The purpose of this study was to explore the construct validity of the RSA in an English-speaking Australian s le and test measurement invariance between the Australian s le and a Norwegian s le. An Australian s le ( N = 781) completed the RSA, Sense of Coherence Scale (SOC-13), Patient Health Questionnaire (PHQ-9), and Generalized Anxiety Disorder Questionnaire (GAD-7). A second s le of Norwegians ( N = 320) was included in the analyses of invariance of the RSA across cultures. There were expected negative correlations between RSA and PHQ-9, and between RSA and GAD-7, but positive correlations between RSA and SOC-13. The results indicated that the six-factor measurement model of the RSA is the same in the Australian and Norwegian s les, and respondents from the two cultures understood and interpreted the items in a comparable fashion. Support was found for the cross-cultural validity of the RSA in an English-speaking Australian s le and as a valid and reliable self-report measure of protective factors.
Publisher: Elsevier BV
Date: 07-2014
DOI: 10.1016/J.SLEEP.2014.03.014
Abstract: Daylight is an important zeitgeber for entraining the circadian rhythm to a 24 h clock cycle, especially within the Polar circle, which has long Polar nights several months each year. Phase delays in sleep timing may occur, but the mean shift is normally small. However, the in idual variation in phase shifts is large, implicating moderating factors. Here we examined the role of several self-regulatory variables (mood and fatigue, behavioral habits, and psychological self-regulation) as moderators of seasonality in sleep timing and chronotype. A s le of 162 young adults (76% females mean age: females 23.4 years, males 24.3 years) participated in a prospective study across three seasons (September, December, March) in Tromsø/Norway at 69°39′N Sleep diary and sleep/health-related questionnaire data were collected at each time-point. Sleep timing and chronotype were delayed during the dark period (December) compared with brighter photoperiods (September and March). Comparable effects were observed for insomnia, fatigue, mood (depression and anxiety), subjective health complaints, physical activity, and school-related stress. Most importantly, depression and fatigue moderated the degree of seasonal shifting in sleep timing, whereas the other self-regulation indicators did not (ie eating habits, physical activity, and psychological self-regulation). Seasonality in sleep timing and chronotype was confirmed, and it seems that depressive symptoms during the dark period exacerbate phase-shifting problems for people living in sub-Arctic regions.
Publisher: Elsevier BV
Date: 10-2017
DOI: 10.1016/J.SLEEP.2017.06.018
Abstract: Variation in day length is proposed to impact sleep, yet it is unknown whether this is above the influence of behavioural factors. Day length, sleep hygiene, and parent-set bedtime were simultaneously explored, to investigate the relative importance of each on adolescents' sleep. An online survey was distributed in four countries at varying latitudes/longitudes (Australia, The Netherlands, Canada, Norway). Overall, 711 (242 male age M = 15.7 ± 1.6, range = 12-19 yrs) adolescents contributed data. Hierarchical regression analyses showed good sleep hygiene was associated with earlier bedtime, shorter sleep latency, and longer sleep (β = -0.34 -0.30 0.32, p < 0.05, respectively). Shorter day length predicted later bedtime (β = 0.11, p = 0.009), decreased sleep latency (β = -0.21, p < 0.001), and total sleep (β = -0.14, p = 0.001). Longer day length predicted earlier bedtimes (β = -0.11, p = 0.004), and longer sleep (β = 0.10, p = 0.011). Sleep hygiene had the most clinical relevance for improving sleep, thus should be considered when implementing adolescent sleep interventions, particularly as small negative effects of shorter day length may be minimised through sleep hygiene techniques.
No related grants have been discovered for Oddgeir Friborg.