A variation of correlation research that is used to compare different people at different ages is called _________.

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Cross-sectional designs involve comparing different groups of people (cohorts) at different ages to determine differences or similarities. This is different from longitudinal designs, which follow the same group of people over time, and cohort effects, which refer to the influence of a group's shared experiences on their behavior and development. Genetic markers are specific genes or DNA sequences that are used to identify individuals or traits.

A Variation of Correlation Research That Is Used to Compare