twins identified from birth records) and contained detailed trauma history assessment. Data from Waves 1 and/or 3 were available for 95.5% of Wave 4 participants which included 2176 monozygotic (57.5%) and 1611 di-zygotic (42.5%) female twins. Ages of the female participants at the time of Wave 4 interview ranged from 18 to 29 years (M = 21.7; SD = 2.76); 14.6% percent of participants identified as African-American (AA) and 85.4% as European-American (EA).
