the internal validity of a research design is paramount to the interpretation of results

The internal validity of a research design is paramount to the interpretation of results. Kratochwill et al. (2010) discuss various threats to internal validity of SCRDs. Choose three of the threats to internal validity and provide a real-world example for each. Conclude your post with a discussion of the concept of measurement in SCRD as discussed on pp. 516-521 in the Smith (2012) article located in Course Documents.

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