The study includes a battery of nonstandardized and standardized questionnaires.

Nonstandardized questionnaires:

  • Sociodemographic and lifestyle variables (e.g., marital status, children, education, proficiency in languages, type and history of employment, nutrition, smoking, social activities, hobbies, use of digital media, caregiving of family members)
  • Information on the use of glasses and vision
  • Medical information necessary for blood collection
  • Ratings of subjective time perception

For the follow-up measurements starting in the middle of 2021, a questionnaire addressing COVID-19–specific aspects has been included (e.g., the participants’ experience and coping with the pandemic and potential consequences of COVID-19 infections).

Standardized questionnaires:

  • Personality traits (Big Five Personality traits, NEO-FFI)
  • Depressive symptoms (Becks Depression Inventory, BDI)
  • Traumatic experiences during childhood (Childhood Trauma Questionnaire, CTQ)
  • Chronotype (D-MEQ)
  • Cognitive failures in daily life (Cognitive Failure Questionnaire, CFQ)
  • Grit personality trait (Grit Scale)
  • Emotional dissonance, job control, general self-control and self-control at work
  • Burnout (Maslach Burnout Inventory-General Survey and Oldenburg Burnout Inventory)
  • Stress reactivity (Perceived Stress Reactivity Scale, PSRS)
  • Affectivity (Positive and Negative Affect Schedule, PANAS)
  • Psychosocial stress (Psychosocial Stress Questionnaire, PSQ-20)
  • Chronic stress (Trier Inventory of Chronic Stress, TICS)
  • Quality of life (World Health Organization Quality of Life questionnaire, WHOQoL-BREF)
  • Work ability (WAI)
  • Physical activity (Lüdenscheid Physical Activity Questionnaire)
  • Handedness (Edinburgh Handedness Inventory)

For the follow-up tests, the Copenhagen Psychosocial Questionnaire-III (COPSOQ) was included to assess psychosocial work demands. Some of the questionnaires were adapted to suit the purpose of the present study.