External validity includes:

Question

Quizplus · Accepted Answer

External validity refers to the extent to which the results of a study can be generalized to other populations, settings, and times. The three subtypes of external validity are: 
A) Temporal validity - the extent to which the findings of a study can be generalized over time.
B) Population validity - the extent to which the findings of a study can be generalized to other populations.
C) Ecological validity - the extent to which the findings of a study can be generalized to real-world settings. 
Therefore, all of these options are correct.

External Validity Includes