Psychometric properties of the Turkish reduced morningness and eveningness questionnaire

Uygur H., Tekdemir R., Uygur Ö. F., Aydın E. F., Çelik M., Babacan H. E., ...Daha Fazla

CHRONOBIOLOGY INTERNATIONAL, cilt.41, sa.5, ss.632-646, 2024 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 41 Sayı: 5
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1080/07420528.2024.2339964
  • Dergi Adı: CHRONOBIOLOGY INTERNATIONAL
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, BIOSIS, CAB Abstracts, EMBASE, Environment Index, MEDLINE, Psycinfo, SportDiscus, Veterinary Science Database
  • Sayfa Sayıları: ss.632-646
  • Anahtar Kelimeler: Chronotype, circadian rhythm, reduced morningness–eveningness questionnaire, validity and reliability
  • Atatürk Üniversitesi Adresli: Evet

Özet

The aim of this study was to examine the psychometric properties of the 5-item Turkish Reduced Morningness-Eveningness Questionnaire (rMEQ) for the first time. The study involved 875 university students in an adaptation and validation study. Participants completed the rMEQ, MEQ, Depression Anxiety Stress Scale-21 (DASS-21), Insomnia Severity Index (ISI), Barratt Impulsiveness Scale Short Form (BIS-SF), and Oxford Happiness Questionnaire Short Form (OHQ-SF). The factor structure, convergent validity, internal consistency, sensitivity, and specificity of the rMEQ were examined. The confirmatory factor analysis showed that the rMEQ had a one-dimensional structure with good fit indices (chi 2/df = 2.94, CFI = 0.990, TLI = 0.979, RMSEA = 0.047, and SRMR = 0.019). There was a significantly strong correlation between rMEQ and MEQ. In addition, we found a significantly weak correlation between rMEQ and DASS-21, ISI, BIS-SF, and OHQ-SF. The internal consistency coefficients of rMEQ were Cronbach's alpha = 0.706 and McDonald's omega = 0.740. The sensitivity and specificity of rMEQ were 83.3%-92.7% for morning types and 86.3%-87.3% for evening types. The Turkish rMEQ has adequate psychometric properties and can be used to assess an individual's chronotype.