Determining internal and external validity

Reference no: EM1398323

I don't understand what internal and external threats are and could you provide some examples of what would be considered a threat to internal and/or external validity of a study design.

Reference no: EM1398323

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Determining internal and external validity : What internal and external threats are and could you provide some examples of what would be considered a threat to internal and/or external validity of a study design.

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