An observational study based on a sample of students in introductory psychology classes at a university in the Midwestern U.S.compared drinking behavior and hangover symptoms in men and women.To what group can the results of this study definitely be extended?
A)All men and women
B)All men and women of the same age group as those in the study
C)All college students in the Midwestern U.S.
D)None of the above

Question

Quizplus · Accepted Answer

The results of this study cannot be extended to any group beyond the sample of students in introductory psychology classes at the university in the Midwestern U.S. This is because the study was based on an observational design, which does not allow for causal inference or generalization to other populations. Additionally, the sample was limited to students in a specific course and location, which may not be representative of all men and women, all college students in the Midwestern U.S., or any other population.

An Observational Study Based on a Sample of Students in Introductory