How can it be determined if an experiment is valid (both internally and externally)?
A) The observed change in the dependent variable is in fact due to the experimental variable.
B) The results of the experiment apply to the general population outside the experimental setting.
C) The results do not account for the effects of extraneous variables.
D) Both a and b are correct.
E) a, b, and c, are all correct.

Question

Quizplus · Accepted Answer

Internal validity is ensured when the change in the dependent variable is due to the experimental variable (A), and external validity is achieved when the results can be generalized to the broader population (B).

How Can It Be Determined If an Experiment Is Valid