Loss of subjects in a static-group comparison design experiment constitutes a probable threat to the internal validity of the study if:

A. losses are not randomly replaced.
B. statistical adjustments are not made.
C. those lost are representative of their original groups.
D. a greater number are lost from one group than from the other.


Answer: D

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Indicate whether the statement is true or false

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All of the following are topics to investigate before an interview except

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