Aresearcher is studying how depression tends to be experienced by people of different ages. the researcher interviews depressed adolescents, young adults, individuals in their 30s and 50s, and those over 70 years old. the research design being used is called

The research design being used is called cross-sectional study.

Explanation:

Cross-sectional studies aime to study the behavior of a variable within a population at a specific point in time. This design can also be used to study the same variable within different subsets of a population, these subsets can be different age cohorts, different gender or race. The distinct characteristic is that the study takes place at one specific point in time, and not throughout several years, like a longitudinal study would be.

In this case, the researcher categorized the population by age cohorts and aimes to study depression amongst these different groups at a specific point in time.

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