Matching on pretest scores can
A) improve power
B) improve external validity
C) harm external validity
D) all of the above
Correct Answer:
Verified
Q10: Matching is desirable only when some uncontrolled
Q11: Twenty participants are studied in a simple
Q12: If the average difference between conditions is
Q13: The matched pairs design should be analyzed
Q14: Properly executed, the matched pairs design should
Q16: Matching on pretest scores can do all
Q17: The difference between a within-subjects and a
Q18: Using a within-subjects design,
A) eliminates the effects
Q19: The within-subjects design has more power than
Q20: Advantages of within- over between-subjects designs include
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