Some of the major threats of external validity are:
A) History, subject selection, and maturation.
B) Maturation, testing, mortality, other factors.
C) Subject selection, other factors.
D) All of the above.
E) None of the above.

Question

Quizplus · Accepted Answer

External validity threats include subject selection and other factors that affect the generalizability of the study results to other settings, populations, or times.

Some of the Major Threats of External Validity Are