Which of the following is the most important factor to consider when evaluating the validity of research findings?

• A. The length of the research report
• B. The popularity of the researchers
• C. How recent the study was published
• D. Whether the study used a representative sample

Answer: (D)

Verified step by step guidance

1. Understand that validity in research refers to how well the findings accurately represent the phenomenon being studied.
2. Recognize that one key factor affecting validity is the sample used in the study, specifically whether it is representative of the larger population.
3. Consider that a representative sample ensures the results can be generalized beyond the study participants, increasing external validity.
4. Evaluate other factors such as the length of the report, popularity of researchers, or recency of publication, but note these do not directly impact the validity of the findings.
5. Conclude that the most important factor for evaluating validity is whether the study used a representative sample, as this directly affects the accuracy and generalizability of the results.