Twins Aged 17 and Under

The Center for Health Sciences' Twins Studies Program maintains the Twin Research Registry at SRI International , which currently has approximately 2,800 twin registrants. Registered twins are periodically asked to participate in health and behavioral studies conducted by SRI researchers.

In October 2001, the registry was expanded to include youths aged 17 and younger, who now account for 15% of total registrants. Parents of twins aged 8-17 can call 1-800-SRI-TWIN (1-800-774-8946) to register their twins.

Contact Us
Inquiries or comments on the Registry are welcome and can be directed to:

Center for Health Sciences
SRI International
333 Ravenswood Avenue
Menlo Park, CA 94025
SRITWIN@sri.com

Phone: 1-800-SRI-TWIN (1-800-774-8946)
Fax: 650-859-5099