Project data were merged by taking data from all offspring in Project 2 (the more recent data source) and adding non-overlapping individuals from Project 1 (249 offspring participated in both studies). The combined studies included 1919 offspring (1080 and 839 for Projects 1 and 2 respectively). The present analyses are limited to the 1828 offspring who had complete data for paternal/avuncular DD/AD history and had information on parental separation/divorce and its timing. These offspring were from 1063 families (476 with one offspring interviewed, 409 with two, and 178 with three).