In an experiment on treatments for depression, a researcher uses a sample consisting of depressed subjects who are NOT typical of the general population of depressed subjects.
Although the treatment works on the sample subjects, it is unlikely to work on depressed
People in general. Which type of validity does this study lack?
A) analogue validity
B) external validity
C) internal validity
D) construct validity

Question

Quizplus · Accepted Answer

The study lacks external validity, which refers to the extent to which the findings can be generalized to the larger population outside of the study sample. The fact that the sample subjects are not typical of the general population of depressed subjects suggests that the findings may not be applicable to other depressed individuals outside of the sample.

In an Experiment on Treatments for Depression, a Researcher Uses