If a person describes the results of a study to you by saying that there is a ze
ID: 130525 • Letter: I
Question
If a person describes the results of a study to you by saying that there is a zero difference in one condition but a large difference in another condition, they are most likely describing which of the following?
D. A difference interaction
A decrease in participants’ scores on a measure from pretest to posttest could suggest all of the following threats to internal validity EXCEPT?
D. Maturation
How does a researcher who conducts a small-N design address external validity concerns about his study?
A. A crossover interaction B. A three-way interaction C. A spreading interactionD. A difference interaction
Explanation / Answer
1. Correct Answer- spreading interaction. This means that interaction among variables is spreading onto others as well.
2. Correct Answer- Attrition. Attrition effects are a result of the drop out of resondents from the study. Therefore, it does not cast a threat to internal validity.
3. Correct Answer- Triangulates his findings with other findings. This will help in increasing the external validity of his results, but care must be exerised that other studies must be on similar variables and conducted through similar procedure.
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