If you are concerned with being able to generalize a result from one of your experiments to a larger population, then you are worried about
A) statistical conclusion validity.
B) construct validity.
C) internal validity.
D) external validity.
Question 2
You do an experiment in a mental institution to determine the effects of two types of therapy. All of the patients classified as having paranoid schizophrenia are used and you flip a coin to determine which type of therapy they will receive. You measure length of hospital stay for each group. Which alternative below is a control variable?
A) type of therapy
B) length of stay
C) classification of disorder
D) flipping a coin
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