A researcher conducts interventional research and uses a small sample that is not randomly selected. When the researcher replicates the study, twice, the researcher again uses the same site and another small sample that is not randomly selected. This is a threat to which type of validity?

Question

Quizplus · Accepted Answer

The use of small, non-randomly selected samples and the replication of the study at the same site with similar samples threaten external validity. This is because the findings may not be generalizable to a broader population, as the samples do not represent the larger group outside of the study's specific context.

A Researcher Conducts Interventional Research and Uses a Small Sample