6 Written questions
6 Multiple choice questions
- Instrument variability
- does the questionnaire represent what is being studied?
- subjective judgment about measurements contained in the questionnaire are reasonable
- -part of reliability assessment
-intra (same data, dif time) or inter (same measurement, dif ppl/tool)
-questionnaire standardisation/validation (qualitative research)
- the degree to which the instrument measures what it is supposed to measure
5 True/False questions
coefficient of variation → estimates the amount of error in the measurement as a percentage of the mean
Criterion Validity → -how well does the questionnaire perform in relation to other already validated measures of the same entity?
reliability → -precision
-is it consistent?
sampling validity → does the questionnaire incorporate all the important aspects of the phenomenon under study?
validation of questionnaires includes achieving → -Construct Validity