European Portuguese Adaptation of Glasgow Content of Thoughts Inventory (GCTI): Psychometric Characterization in Higher Education Students.
Persistent cognitive activity is an important factor in disturbing sleep-onset both during bedtime and when attempting to get back to sleep after nocturnal awakenings. One of the most specific self-report measures designed to assess this feature is the Glasgow Content of Thoughts Inventory (GCTI). In this study, we investigated the preliminary psychometric properties of GCTI in a large sample of higher education European Portuguese students (N = 2995). Our results suggest that there is evidence of good internal consistency (α = 0.93) and validity indicators. Moreover, we found an interpretable factorial structure comprising 5 correlated factors that needs to be confirmed in future studies. The European Portuguese version of the GCTI appears to be a reliable and valid instrument for measurement of sleep-onset disturbing cognitions.
a Department of Education , University of Aveiro and the Institute for Biomedical Imaging and Life Sciences.
Daniel R
DR
Marques
b Department of Education and Psychology , University of Aveiro.
Mariana S
MS
Meia-Via
c Nuffield Department of Clinical Neurosciences / Sleep & Circadian Neuroscience Institute, University of Oxford.
Colin A
CA
Espie
d Department of Education and Psychology , University of Aveiro; Center for Health Technology and Services Research (CINTESIS), Faculty of Medicine, University of Porto.
Carlos F
CF
da Silva
e Department of Education and Psychology , University of Aveiro; Center for Health Technology and Services Research (CINTESIS), Faculty of Medicine, University of Porto.
Ana
A
Allen Gomes
D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011174:Portugal; D011569:Psychiatric Status Rating Scales; D011594:Psychometrics; D007319:Sleep Initiation and Maintenance Disorders / Q000175:diagnosis*; D013334:Students / Q000523:psychology*; D013850:Thinking; D014177:Translations; D014495:Universities; D055815:Young Adult
GCTI; insomnia; psychometric study; sleep; validation