What was a notable limitation of Chatard's study regarding the sample used?

The selection of a sample that is too homogeneous in age can significantly impact the findings of a study. In Chatard's research, if the participants were primarily of similar age, it could limit the generalizability of the results. For instance, if the study was conducted with a narrow age range, it might not accurately reflect the behaviors, attitudes, or psychological characteristics of individuals outside that age group. This lack of diversity in age could mean that any conclusions drawn would primarily apply to that specific demographic, making it challenging to apply the results more broadly across different age groups. A diverse age range in participants would allow for a richer understanding of how various factors may differ between younger and older individuals, enhancing the robustness of the findings.

In contrast, factors like the inclusion of only male participants, the absence of a control group, or focusing solely on high-achieving students present their own limitations, but they do not directly address the issues surrounding developmental stages or generational differences that a homogeneous age group would create.