Twins’ close relationship are often affected by their behavior in which twins have a tendency to make one of the co-twins an attachment figure, or a model, based on which co-twin is capable of providing the other twin with safety. Nancy Segal acknowledges that twins “come closer than anyone else to achieving the coordinated, harmonious relations for which we all strive for,” and this is because “an identical twin may be the best source for most types of assistance for which we would normally rely on other people, such as emotional sustenance or investment decisions,” and also claims that in regard to genetics it would seem that, “helping an identical twin is like helping oneself, i.e., helping one’s genes survive” (Segal 101). Segal shows her
