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Measuring individual vulnerability to sleep loss : the CHICa scale


Measuring individual vulnerability to sleep loss : the CHICa scale

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dc.contributor.author Kontrymowicz-Ogińska, Halszka [SAP13905200] pl
dc.contributor.author Mojsa-Kaja, Justyna [SAP11019501] pl
dc.contributor.author Fąfrowicz, Magdalena [SAP11014939] pl
dc.contributor.author Marek, Tadeusz [SAP11007137] pl
dc.date.accessioned 2014-10-30T10:34:20Z
dc.date.available 2014-10-30T10:34:20Z
dc.date.issued 2014 pl
dc.identifier.issn 0962-1105 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/2207
dc.language eng pl
dc.title Measuring individual vulnerability to sleep loss : the CHICa scale pl
dc.type JournalArticle pl
dc.description.physical 341-348 pl
dc.abstract.en The aim of this project was to construct a psychometrically satisfying scale to describe subjective reactions to sleep deprivation. First, on the basis of a literature review, a list of items was generated which reflected the negatively affected mood and reduced wellbeing associated with sleep loss. Additionally, psychology students were asked to describe their cognitive and emotional symptoms following a night with curtailed sleep. As a result, 69 items were included in the experimental set. University students (n = 102, females, mean age 22.5 ± 1.9 years) completed the form several times during 1 week in June (while preparing for examinations) and on a free day in September; a total of 460 forms were collected. The final, 26-item version of the scale was validated in a sleep deficit experiment lasting 1 week, conducted with 25 female participants (mean age 23.4 ± 1.9 years). Factor analysis showed 71.7% of total variance explained by four components: impaired thermoregulation (C for cold), disrupted appetite (H for hunger), affective problems (I for irritability) and lowered level of cognitive functioning (Ca for cognitive attenuation). A Polish version of the CHICa scale showed satisfactory psychometric properties. Cronbach's alpha of the subscales were between 0.90 and 0.95. All four subscales exhibited a significant increase with an experimental 3-h daily sleep restriction over a period of 1 week; cognitive attenuation was the most symptomatic. Cognitive problems (reduced concentration, comprehension and accuracy) and a lack of energy seem to be the most specific subjective manifestations of the chronic sleep deficit state. CHICa may be helpful in research on inter-and intra-individual differences and on the efficacy of various counteractive treatments for the consequences of sleep deprivation. pl
dc.subject.en chronic sleep deprivation pl
dc.subject.en individual differences pl
dc.subject.en sleep deficit pl
dc.subject.en sleep loss consequences pl
dc.description.volume 23 pl
dc.description.number 3 pl
dc.description.publication 0,4 pl
dc.identifier.doi 10.1111/jsr.12115 pl
dc.identifier.eissn 1365-2869 pl
dc.title.journal Journal of Sleep Research pl
dc.language.container eng pl
dc.affiliation Wydział Zarządzania i Komunikacji Społecznej : Instytut Psychologii Stosowanej pl
dc.affiliation Pion Prorektora ds. badań naukowych i funduszy strukturalnych : Małopolskie Centrum Biotechnologii pl
dc.subtype Article pl
dc.rights.original bez licencji pl
.pointsMNiSW [2014 A]: 30

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