Answer :
Answer: The cohort effect is a phenomenon in which members of a birth cohort experience a particular lifetime event or rite of passage at approximately the same time. Cohort effects describe how studying a population in different "cohorts"—those born in a different time or region or with different life experiences—can change the results of a study.
A cohort is a group of people who share a common set of demographic characteristics or experiences, including but not limited to age. In general, in cross-sectional studies, age confounds group effects. The cohort effect is the effect that having been born in a particular time, region, period, or having similar life experiences has on the development or perceptions of a particular group.
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