A major limitation of cross-sectional research is that

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Cross-sectional research can be affected by cohort effects, which occur when individuals from different age groups are influenced by different historical, social, or cultural factors. This can distort age differences in the sample and limit the generalizability of the findings to other populations or time periods. Dropout rates may affect the representation of age groups, but this is not a major limitation of cross-sectional research. Control over the treatment group is not specific to cross-sectional research and can vary depending on the study design.

A Major Limitation of Cross-Sectional Research Is That