Which of the following is likely to improve the external validity of a research study?
A)Being sure that all participants have the same ethnic background
B)Including groups from various cultures
C)Using only first year students and sophomores as participants
D)Employing only one type of experimenter

Question

Quizplus · Accepted Answer

Including groups from various cultures is likely to improve the external validity of a research study as it increases the generalizability of the findings to different populations. Option A restricts the sample and does not enhance the generalizability. Option C limits the sample to a particular age group, reducing the scope of the study, and option D may introduce experimenter bias.

Which of the Following Is Likely to Improve the External