The EGDS assessment includes the following: questionnaires, in-person interviews, telephone interviews, and standardized testing for birth and adoptive parents; observational interactions for adoptive families; standardized testing for adopted children; diurnal salivary cortisol collection for birth parents and adopted children; medical records collection for birth parents; school and teacher records collection for adopted children; and salivary DNA collection from all participants. The interviews include interviewer-administered questions and computer-assisted personal interview (CAPI) questions that are completed privately by participants on a laptop computer or on the project's secure website. The birth parents are assessed in person at 3–6, 18, and 54 months postpartum and via telephone at 12, 22, 30, 36, and 42 months postpartum. The adoptive families are assessed in person at child age 9, 18, 27, 54, 72, and 84 months and via telephone at child age 6, 12, 22, 36, 48, 60, and 78 months. The in-person assessments last 2–4 h, and the telephone interviews last approximately 15 min.
