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Researchers wanted to study alcohol use by teenagers and observe if there were any differences between cohorts over time. They compared three groups of students (grades 6 to 8, grades 9 to 10, and grades 11 to 12) and focused on the frequency and amount of their alcohol use over a five-year period. They collected useful information about age-related changes, changes within the same individuals as they aged, and were able to account for the possibility of cohort and/or time of measurement effects. This is an example of ________.

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buchinnamani208

Answer:

Longitudinal study

Explanation:

Longitudinal research is concerned with research spanning a given period of time, long or short, and making repeated observations of particular variables over this period of time. This is seen in the above example where the researcher observes alcohol use if teenagers in different age groups and collects data on these subjects over a period of time as they age, five years from the example given above

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