What does generalization refer to in the context of an experiment?
1) Applying the results from an experiment to participants outside of those used in the original experiment
2) Applying the results from an experiment to participants within the same demographic as those used in the original experiment
3) Applying the results from an experiment to participants who have not yet been recruited for the original experiment
4) Applying the results from an experiment to participants who have already participated in the original experiment
