A third study design, the sequential design, combines both methodologies. Here, a researcher observes members of different birth cohorts at the same time, and then tracks all participants over time, charting changes in the groups. While much more resource-intensive, the format aids in a clearer distinction between what changes can be attributed to an individual or historical environment from those that are truly universal.
a third study design the sequential design combines both methodologies here a researcher observes members of different birth cohorts at the same time and then tracks all participants over time charting changes in the groups while much more resource-intensive the format aids in a clearer distinction between what changes can be attributed to an individual or historical environment from those that are truly universal