There are multiple definitions:

1. lifetime experience questionnaire(English)

   • measures educational, work-related and extracurricular activities
   • MMSE
   • Questionnaire, Cognitive function, Alzheimer's disease
   • https://doi.org…03329170600938X

2. Listening Effort Questionnaire(English)

   • LEQ-CI21, CI, CIQOL, LEQ-CI, LEQ-CI29
   • Audiology, Disability, Questionnaire
   • https://doi.org…000000000001059