questionnaire: "loneliness"
scales:
  - name: "loneliness"
    label: "Perceived Loneliness"
    items:
      - id: "loneliness_1"
        text: "... that you lack companionship?"
        inverse: false
      - id: "loneliness_2"
        text: "... left out?"
        inverse: false
      - id: "loneliness_3"
        text: "... isolated from others?"
        inverse: false
    score_range: [1, 3]
    format: "Likert"
    calculation: "mean"
    response_options: "1 = hardly ever, 2 = some of the time, 3 = often"
    output: "loneliness"
    reference: "Hughes et al. (2008)"