When referring to the question of whether the experimental stimulus made some difference in the specific instance under investigation,one is referring to
A)external validity.
B)internal validity.
C)concomitant variation.
D)cross-sectional analysis.
E)interaction errors.

Question

Quizplus · Accepted Answer

Internal validity refers to the extent to which the experimental design allows for the conclusion that the intervention caused the observed effect, rather than other factors. Therefore, determining whether the experimental stimulus made a difference in the specific instance under investigation is related to internal validity.

When Referring to the Question of Whether the Experimental Stimulus