Researchers in the SECCYD collect data on families at 10 sites around the country. These sites are affiliated with the universities listed below.

University of Arkansas at Little Rock Harvard University and Wellesley College University of California, Irvine University of Kansas University of North Carolina, Chapel Hill Temple University University of Pittsburgh University of Virginia University of Washington, Seattle University of Wisconsin, Madison

After collecting data for more than 10 years, the SECCYD datasets contain hundreds of thousands of pieces of information. To manage these data, the SECCYD relies on its Data Coordinating Center, located at Research Triangle Institute (RTI) International, Inc., in North Carolina.

In addition, the SECCYD depends on scientific guidance and oversight from the NICHD, which has supported the Study since it started in 1991. The SECCYD Scientific Coordinator is a researcher at the NICHD, located at the NIH in Bethesda, Maryland.