6 Written questions
6 Multiple choice questions
- -face validity
-does it represent the true value of the attribute being measured?
-validity of instrument compared with gold standard
- subjective judgment about measurements contained in the questionnaire are reasonable
- making sure interviewers administer the interview in the same way to all the subjects
- Instrument variability
- -part of reliability assessment
-intra (same data, dif time) or inter (same measurement, dif ppl/tool)
5 True/False questions
Content Validity → the degree to which the instrument measures what it is supposed to measure
Construct Validity → does the questionnaire represent what is being studied?
validation of questionnaires includes achieving → -Construct Validity
inter → same tool/observer
Criterion Validity → -how well does the questionnaire perform in relation to other already validated measures of the same entity?