2019 which focused on assessments of youth ages 12–22 (born 1982 or later) in both case and comparison families at 2 year intervals; and (d) the current, “Lifespan” wave, begun in 2019, in which previously assessed participants now in midlife (ages 30–40) and later life (aged 50 or older) are re‐assessed. With each phase of data collection, the core assessment interview (SSAGA) was revised to reflect changes in diagnostic criteria or to expand assessment to address newly arising and age‐specific research questions. We provide here an overview of the different data collection waves, the research question guiding the focus of the data collection, the numbers of participants assessed at each, and tabular summaries of their characteristics.
