Brief Horne-Östberg Morningness-Eveningness Questionnaire: The reduced Horne-Östberg-Morningness-Eveningness Questionnaire is a widely used measure of the morningness-eveningness dimension [34 (link)]. Its five items refer to rising time, peak time, retiring time, morning freshness, and self-evaluated chronotype. A composite score from 4 to 25. Higher levels of morningness are reflected by higher scores.
Dysfunctional Beliefs and Attitudes about Sleep: Participants’ sleep-related cognitions will be measured using the questionnaire Dysfunctional Beliefs and Attitudes about Sleep-16 [35 (link)], which consists of 16 items assessing sleep-related cognitions (e.g., faulty beliefs an appraisals, unrealistic expectations, perceptual and attentional bias).
Ford Insomnia Response to Stress Scale: Sleep reactivity will be measured using the Ford Insomnia Response to Stress Scale [36 (link)]. Its 9 items assess the vulnerability to situational insomnia under 9 different stressful conditions (i.e., sleep reactivity). The items are scored on a 4-point scale, ranging from ‘Not likely’ to ‘Very likely’.
Dysfunctional Beliefs and Attitudes about Sleep: Participants’ sleep-related cognitions will be measured using the questionnaire Dysfunctional Beliefs and Attitudes about Sleep-16 [35 (link)], which consists of 16 items assessing sleep-related cognitions (e.g., faulty beliefs an appraisals, unrealistic expectations, perceptual and attentional bias).
Ford Insomnia Response to Stress Scale: Sleep reactivity will be measured using the Ford Insomnia Response to Stress Scale [36 (link)]. Its 9 items assess the vulnerability to situational insomnia under 9 different stressful conditions (i.e., sleep reactivity). The items are scored on a 4-point scale, ranging from ‘Not likely’ to ‘Very likely’.
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