In the current study, in order to approximate a longitudinal cohort study design, we utilized the “mutoscope” approach to analyzing repeated, cross-sectional data constructed as a panel (see Frost, 1939 and Seedall and Anthony, 2015). Specifically, we combined a series of nationally representative cross-sections of youth to provide a multi-year string of data that, in effect, reflects a nationally representative cohort. To be clear, the data analyzed are not repeated annuals assessments of the same individuals between the ages of 12 and 25.