Multiple Choice
Dr.Dominguez conducted a study of children with attention-deficit/hyperactivity disorder.She developed a new medication that was significantly better than placebo in treating the disorder,but this effect was not found in a similar study conducted in another laboratory.Dr.Dominguez's study has __________ internal validity and __________ external validity.
A) high; high
B) high; low
C) low; high
D) low; low
Correct Answer:

Verified
Correct Answer:
Verified
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