Internal validity with idea of instrument validity

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1. Which do you think is harder to obtain, validity or reliability? Why? 2 paragraphs and a reference

2. It sometimes would not be fair to compare an individual's score on a test to the scores of other individuals taking the same test. Why?

2 paragraphs and please include reference

3. Stuidents often confuse the concept of internal validity with the idea of instrument validity. How would you explain the difference between the two?

2 paragraphs and a reference

Reference no: EM132277951

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