Links to various news articles: Twin Study Offers Insight into Antisocial Behavior view Story Other Links More Links relating to twin studies National Organization for Mothers of Twins Clubs This website holds an enormous of information for parents of multiples. This information consists of articles, twin participation in research studies and, where and how to a join local twin club. Center for the Study of Multiple Births This website provides information about multiple births and supports research about the causes, effects, and problems associated with multifetal pregnancy. The Twins’ Foundation This foundation provides information about twins through its publications, its national Twin Registry and its multimedia resource center. Twins’ Magazine This website is an information resource for parents about subscriptions, books, and special gifts for twins or multiples. In addition, various selected articles are available online. Twinsworld The ultimate site for twins, triplets, and other multiples. Twinstuff Web community for twins, triplets-and-higher, and their families. Includes bulletin boards and newsletters about raising twins The California Twin Program The “other” twin register at USC established to investigate human health and disease outcomes. Their studies primarily involve adult twins born in the State of California