Questions and Answers
Explain the difference between reliability and validity in the context of measurement in research studies.
Reliability refers to the consistency or stability of a measure over time, while validity refers to the accuracy or truthfulness of a measure in assessing the concept it is intended to measure.
What is the purpose of pilot testing in research studies, particularly when developing and administering a questionnaire or survey instrument?
Pilot testing allows researchers to assess the effectiveness and clarity of the questionnaire or survey instrument before full administration. It helps identify unclear questions, interpretation issues, and potential problems with item relevance, completion rates, and timing. Additionally, pilot testing provides data for power calculations and ensures that the instrument is well-suited for the target participants.
Describe the differences between highly structured and flexible surveys. When might each type be more appropriate for data collection in a research study?
Highly structured surveys involve fixed designs with close-ended questions and Likert scales, restricting changes in question order or wording. Flexible surveys allow for rewording, reordering, and greater depth in responses. Highly structured surveys are suitable when specific, standardized data is required, while flexible surveys are more appropriate for exploratory studies or when in-depth insights are needed.
