Explain the principles of wording, stating how these are important in questionnaire design, citing examples not in the book.
Answer to relevant QuestionsHow are multiple methods of data collection and from multiple sources related to reliability and validity of the measures? What are the differences between causal and correlational studies? Explain the possible ways in which you can control “nuisance” variables. What is meant by operational deﬁnition, when is it necessary, and why is it necessary? “A valid instrument is always reliable, but a reliable instrument is not always valid”. Comment on this statement.
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