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a) Why is priority usually given to the internal validity rather than external validity? b) What is a proof of concept study, and why is such a type of study important? Give an example (real or hypothetical) of a proof of concept study or finding

Psychology Nov 09, 2020

a) Why is priority usually given to the internal validity rather than external validity?

b) What is a proof of concept study, and why is such a type of study important? Give an example

(real or hypothetical) of a proof of concept study or finding.

c) In criticizing a study, it is not quite fair to say, “Yes but the results may not generalize to this or that

population.” What more is needed to make this a genuine threat to external validity?

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