Formative Assessment
Instructions
The hands-on workshop in the PPT of Week 4 will introduce you to measurement within health promotion. This formative assessment offers you the chance to receive feedback on your understanding of key terms discussed in this workshop, which are relevant for subsequent assessment in the course.1. Compare the findings discussed in class to those in the Clark et al. (2015) (referenced below) in terms of validity (criterion). You may wish to reflect on why there are similarities/differences.2. Explain why having knowledge of the validity of a questionnaire or any other measurementmethod is useful for health promotion planning and evaluation.
Answer
Comparing ValidityThe validity of a measurement tool for conducting research is fundamental in obtaining reliable data. Validity defines the degree to which an instrument measures a variable in a study. Criterion validity, which is a type of internal validity, predicts the extent to which behavioral measure and a standard measure demonstrate similarity. In the Clark et al. (2015) study, the Past-day Adults Sedentary Time University (PAST-U) questionnaire guarantee reliable validity when compared to the gold standard, activPAL-determined. PAST-U has a 95% confidence interval, and therefore, provides a reliable measure of the sedentary period observed in students and adults. Similarly, the use of interviews to collect the sources of air pollution is equally valid as compared to the gold stan...
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