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

Question

Quizplus · Accepted Answer

Dr. Dominguez's study has high internal validity because it was well-designed and showed a significant difference between the medication and placebo. However, it has low external validity because the results could not be replicated in another laboratory, indicating that the findings may not be generalizable to other populations or settings.

DrDominguez Conducted a Study of Children with Attention-Deficit/hyperactivity Disorder