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The difference between internal and external validity

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What is the difference between internal and external validity? Is one more important than the other? Explain your answer.

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Solution Summary

In this solution the differences between internal and external validity are discussed. The importance of each is also cited.

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Internal validity is an inductive estimate of the degree to which conclusions about causal relationships can be made based on the measures used, the research setting and the whole research design. External validty concerns the extent to which the internally valid ...

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