Many psychology departments in the United States have subject pools. Undergraduate students enrolled in introduction to psychology are often awarded extra credit or sometimes even required to complete research studies in order to earn points towards their class. The issue with relying on WEIRD samples through a subject pool in psychological research is most likely a result of what kind of sampling?

Question

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Relying on a subject pool in a psychology department creates a convenience sample, which may not be representative of the general population as it often includes mostly undergraduate students who are willing to participate in studies for extra credit. This results in a WEIRD sample (Western, Educated, Industrialized, Rich, and Democratic) that is not reflective of the wider population, leading to issues with generalizability of research findings.

Many Psychology Departments in the United States Have Subject Pools