Internal validity refers to

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"Internal validity" refers to:

A. whether or not there is really a causal relationship between two variables

B. whether or not the findings are relevant to the researcher's everyday lives

C. the extent to which the researcher believes that this was a worthwhile project

D. how accurately the measurements represent underlying concepts

Answer: Option A

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Assertion (A): If regression coefficient of X on Y is greater than one, regression coefficient of Y on X must be less than one.
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