After taste…I mean “after test”

Let’s say you want to find out how well students’ think they learned theory in your class.

One option is to do a pre/post test: You distribute the same survey before and after the class asking them to rate on 1-4 scale how well they think they know the new material. Then you compare their ratings.

Another option is to do posttest only: You could give them a survey after the class that Surveyasks them to rate 1-4 their knowledge before the class and 1-4 their knowledge now. Then you compare their ratings.

One research option is stronger than the other.  Which one is it? and Why?  (hint: think retrospective/prospective)

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