RTI Project #0216274 is a R01 grant from NICHD to co-PIs Carolyn Halpern (UNC-CPC) and Kerith Conron (UCLA). In synchrony with the multimode Add Health Wave V Program Project, this study will collect, clean, disseminate, and analyze new data from a subset of the Add Health cohort via an ancillary survey that will add critical information about formative experiences more specific to sexual and gender development and enhanced information about socioeconomic status and determinants of socioeconomic status. This project represents an unprecedented opportunity to prospectively study the intersections of sexual orientation, gender identity, SES, and health in a population-based sample across the life course. This additional opportunity is an NIH competing revision to add the additional SGM (~ 715) that meet the UNC/UCLA expanded criteria and to increase the incentive amount.