If a researcher uses only those subjects who volunteer for a study, then which outcome may be expected?

Question

Quizplus · Accepted Answer

Using only those subjects who volunteer for a study may not be representative of the broader population, leading to limited generalizability of the results. Non-volunteers may have different characteristics, behaviors, or attitudes that could impact the outcome, thus reducing the external validity of the study.

If a Researcher Uses Only Those Subjects Who Volunteer for a Study