Because researchers are generally more concerned with establishing internal validity rather than external validity, they are typically more concerned with ______and less concerned with ________.
A) random selection; random assignment
B) random assignment; random selection
C) populations; samples
D) samples; populations

Question

Quizplus · Accepted Answer

Random assignment is crucial for establishing internal validity by ensuring that each participant has an equal chance of being assigned to any group in the experiment, thus controlling for confounding variables. Random selection is more about external validity, or the extent to which results can be generalized to a broader population.

Because Researchers Are Generally More Concerned with Establishing Internal Validity