Krank and colleagues (2005, 2006) studied the development of alcohol and drug use in British Columbia youth.To do this, they collected cross-sectional survey data from more than 1300 students in Grades 7 to 9.For the longitudinal part of the study, they then re-tested the students once a year for the next two academic years.What is this combination of longitudinal and cross-sectional methods in one study called?

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A sequential research design combines elements of both cross-sectional and longitudinal designs, allowing researchers to track changes over time within a cohort while also comparing different cohorts at a single point in time. This approach provides a comprehensive view of development and changes in behaviors or attitudes across different age groups and over time. In the context of the study by Krank and colleagues, this design enabled them to observe the development of alcohol and drug use among British Columbia youth by initially collecting data at one point in time and then following up with the same participants over subsequent years.

Krank and Colleagues (2005, 2006) Studied the Development of Alcohol