Which of the following is TRUE?
A)A study lacking external validity may nevertheless have high internal validity.
B)Internal validity is a matter of degree,whereas external validity either exists or doesn't exist.
C)In most experiments we can obtain proof that the observed response is due to our experimental manipulations.
D)All of these are true.
E)None of these are true.

Question

Quizplus · Accepted Answer

A study can have high internal validity, meaning that the study accurately tests its intended variable, even if it lacks external validity, meaning that the results may not generalize to other populations or settings. This is because internal validity refers to the soundness of the study's design and methodological controls, while external validity refers to the extent to which the findings can be applied to the real world. B is incorrect because both internal and external validity are matters of degree. C is incorrect because it is not always possible to definitively prove causation in experiments, as there may be confounding variables or other factors that affect the observed response. D and E are also incorrect for the reasons stated above.

Which of the Following Is TRUE