What are the threats to internal validity and generalizability in experiments?

What will be an ideal response?


Like any research design, experimental designs must be evaluated for their ability to yield valid conclusions. True experiments are particularly well suited to producing valid conclusions about causality (internal validity), but they are less likely to fare well in achieving generalizability. Quasi-experiments may provide more generalizable results than true experiments, but they are more prone to problems of internal invalidity (although some design schemes allow the researcher to rule out almost as many potential sources of internal invalidity as does a true experiment). In general, nonexperimental designs (such as survey research and participant observation) permit less certainty about internal validity.

Criminal Justice

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Why would a defendant sign a Boykin form?

a. To acknowledge waiving his or her right to counsel b. To acknowledge waiving his or her right to a trial c. To acknowledge waiving his or her right to a plea bargain d. To admit what crime he or she committed

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A statute that makes it a crime to “write, speak, or otherwise communicate a belief that is offensive to the ordinary member of any racial, ethnic, or religious group” is most likely violative of the First Amendment to the United States Constitution.

Answer the following statement true (T) or false (F)

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Utilitarianism emphasizes that the rightness of an act has to do with the ______, that is, it has to do with what will happen as the result of our actions.

a. consequences b. rules c. imperatives d. future

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If households pay $1,000 in interest payments and receive $1,200 in interest, wages equal $9,000, rental receipts on land are $200, total business profits before taxes are $2,200, depreciation is $1,750, and indirect business taxes are $1,000, then

gross domestic income is A) $14,350. B) $13,150. C) $11,400. D) $15,350.

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