Relationship between confounding and internal validity

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1. What is the relationship between confounding and internal validity?

2. What are experimenter expectancy effects, and how do researchers minimize them?

3. Should demand characteristics be eliminated or strengthened in an experiment? Explain.

Reference no: EM131322672

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Relationship between confounding and internal validity : What is the relationship between confounding and internal validity?- What are experimenter expectancy effects, and how do researchers minimize them?
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