What research compares people of different ages at the same time?

Cross-sectional research is the method that compares people of different ages at the same time. This approach allows researchers to analyze various age groups simultaneously, examining differences in behaviors, attitudes, or characteristics. By capturing a snapshot of different age cohorts, cross-sectional studies can identify trends and patterns across the lifespan. However, this method does not provide insight into how individuals change over time, which would require longitudinal research.