internal validity of an experimental design refers to
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Internal validity refers specifically to whether an experimental treatment/condition makes a difference or not, and whether there is sufficient evidence to support the claim. External validity refers to the generalizibility of the treatment/condition outcomes.
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Internal validity refers specifically to whether an experimental treatment/condition makes a difference or not, and whether there is sufficient evidence to support the claim. External validity refers to the generalizibility of the treatment/condition outcomes.
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