Which of the following experimental designs have the least explanatory power compared to the others?
a. classical experimental design
b. all experimental designs have equal explanatory power
c. solomon four-group design
d. one-shot case study
e. posttest-only control group design

d. One-shot case study

The reason why answer choice "d. One-shot case study" would be the correct answer because this would be a experimental design that has the least, or fewest, explanatory power compared to the other experimental designs.

A one-shot case stud is a study where students do not use any controlling factors and use only a single test group. Only one measurement would be taken after the study. The only thing that a one-shot case study would be measuring is the post-test results.

A "explanatory power" is pretty much a theory or hypothesis that one could make about a given subject and explain the subject very well and what causes it.

A one-shot case study doesn't have many factors that would help support a theory or hypothesis, due to the lack of evidence it would provide. This is why a one-shot case study would have the least explanatory power.

everyone knows that religion has a dangerous tendency to promote violence. this story is part of the conventional wisdom of western societies, and it underlies many of our institutions and policies, from limits on the public role of religion to efforts to promote democracy in the middle east.

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