Investigation of morning–evening orientation in six countries using the preferences scale

Smith, Carlla S.; Folkard, Simon; Schmieder, Robert A.; Parra, Luis Fernando; Spelten, Evelien; Almiral, Helena; Sen, R. N.; Sahu, Subhashis; Pérez, Lisa M.; Tisak, John

doi:10.1016/s0191-8869(01)00098-8

Cited by 177 publications

(159 citation statements)

References 27 publications

Supporting

Mentioning

131

Contrasting

Unclassified

Order By: Relevance

“…Based on previous research, we tested several measurement models separately for the German and the Spanish samples Brown, 1993;Caci et al, 2005;Díaz-Morales & Sánchez-López, 2004Natale & Cicogna, 2002;Pornpitakpan, 1998Pornpitakpan, , 2000Roberts & Kyllonen, 1999;Smith et al, 1989Smith et al, , 2002Smith, Tisak, Bauman, & Green, 1991). Results indicated a very poor fit of the factorial solutions (RMSEA > 0.10) for the present samples.…”

Section: Resultsmentioning

confidence: 89%

“…Different aspects may account of the greater tendency to morningness in German students and each should be discussed in turn. Latitude (or climate) was previously considered to constitute one factor facilitating different morning-evening orientations between students of different countries (Smith et al, 2002). However, in comparing Spanish and Italian students, Italians showed a higher morning orientation than Spanish students .…”

Section: Discussionmentioning

confidence: 90%

“…'Morningness' and 'morning alertness' factors were invariant (factorial form and loadings) across countries, whereas the third factor 'activity planning' (items 2, 7, 9 and 13) was not invariant. Although several factorial solutions of the CSM have been obtained, few studies have analysed factorial invariance of the CSM across countries (Smith et al, 1991(Smith et al, , 2002Caci et al, 2005) the transcultural validity of the CSM and show that two of the three factors of the morningness construct are equivalent in Germany and Spain. Different aspects may account of the greater tendency to morningness in German students and each should be discussed in turn.…”

Section: Discussionmentioning

confidence: 99%

“…Smith et al (2002) found differences in scale means between countries and suggested a kind of climatic gradient, thus indicating that environmental factors may provide some explanation for differences between cultures. Respondents from temperate climates (Colombia, Spain, India) perceived themselves to be more morning oriented than their counterparts from countries with less temperate climates (US, England, Netherlands).…”

Section: Introductionmentioning

confidence: 96%

See 3 more Smart Citations

Morningness in German and Spanish students: a comparative study

Randler

Díaz‐Morales

2007

Eur J Pers

View full text Add to dashboard Cite

Humans show pronounced individual differences in circadian orientation. Transcultural comparisons are interesting since biological (or environmental) factors together with cultural ones may contribute to differences in morningness-eveningness. We compared Spanish and German undergraduates using the Composite Scale of Morningness (CSM) to assess circadian preferences. Confirmatory and multiple groups confirmatory factor analysis were used to assess factor structure and structural invariance across countries. The results showed that a three-factor model of morningness best characterises the CSM structure of both samples. Partial factorial invariance (factor loadings) across countries was demonstrated for the factors 'morningness' and 'morning alertness'. Scores of both factors were higher in German students. Potential cultural and biological explanations for the differences are discussed.

show abstract

Section: Resultsmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

See 2 more Smart Citations

Morningness in German and Spanish students: a comparative study

Randler

Díaz‐Morales

2007

Eur J Pers

View full text Add to dashboard Cite

show abstract

“…17 Daily human behaviour has mainly been assessed by questionnaires designed to associate individuals with temporal preferences called ''morningnesseveningness'' (ME 18 ). The questions used are mostly subjective, relating sleep and activity times to a personal ''feeling best rhythm'' 18 to the habits of others (e.g., ''I get up later than most people'', 19 ), or to hypothetical situations (e.g., ''Approximately, what time would you get up if you were entirely free to plan your day?'' 20 ).…”

Section: Introductionmentioning

confidence: 99%

Epidemiology of the human circadian clock

Roenneberg

Kuehnle

Juda

et al. 2007

Sleep Medicine Reviews

1,223

1,057

View full text Add to dashboard Cite

Summary Humans show large inter-individual differences in organising their behaviour within the 24-h day-this is most obvious in their preferred timing of sleep and wakefulness. Sleep and wake times show a near-Gaussian distribution in a given population, with extreme early types waking up when extreme late types fall asleep. This distribution is predominantly based on differences in an individuals' circadian clock. The relationship between the circadian system and different ''chronotypes'' is formally and genetically well established in experimental studies in organisms ranging from unicells to mammals. To investigate the epidemiology of the human circadian clock, we developed a simple questionnaire (Munich ChronoType Questionnaire, MCTQ) to assess chronotype. So far, more than 55,000 people have completed the MCTQ, which has been validated with respect to the Horne-Østberg morningness-eveningness questionnaire (MEQ), objective measures of activity and rest (sleep-logs and actimetry), and physiological parameters. As a result of this large survey, we established an algorithm which optimises chronotype assessment by incorporating the information on timing of sleep and wakefulness for both work and free days. The timing and duration of sleep are generally independent. However, when the two are analysed separately for work and free days, sleep duration strongly depends on chronotype. In addition, chronotype is both age-and sex-dependent.

show abstract

Integration of Biological Clocks and Rhythms

Refinetti

2012

Comprehensive Physiology

View full text Add to dashboard Cite

Animals, plants, and microorganisms exhibit numerous biological rhythms that are generated by numerous biological clocks. This article summarizes experimental data pertinent to the often-ignored issue of integration of multiple rhythms. Five contexts of integration are discussed: (i) integration of circadian rhythms of multiple processes within an individual organism, (ii) integration of biological rhythms operating in different time scales (such as tidal, daily, and seasonal), (iii) integration of rhythms across multiple species, (iv) integration of rhythms of different members of a species, and (v) integration of rhythmicity and physiological homeostasis. Understanding of these multiple rhythmic interactions is an important first step in the eventual thorough understanding of how organisms arrange their vital functions temporally within and without their bodies.

show abstract

Investigation of morning–evening orientation in six countries using the preferences scale

Cited by 177 publications

References 27 publications

Morningness in German and Spanish students: a comparative study

Morningness in German and Spanish students: a comparative study

Epidemiology of the human circadian clock

Integration of Biological Clocks and Rhythms

Contact Info

Product

Resources

About