Which of the following in a study is most likely to produce better external validity?
A)Using a random sample
B)Employing nonequivalent groups
C)Including only male subjects
D)Having a single experimenter

Question

Quizplus · Accepted Answer

Using a random sample increases the likelihood that the results can be generalized to the population as a whole, thus improving external validity. Employing nonequivalent groups, including only male subjects, or having a single experimenter may introduce biases and limitations that decrease external validity.

Which of the Following in a Study Is Most Likely