Keltner: When you put these findings that this oxytocin receptor gene on the third chromosome predicts problems handling stress and problems reading other people's emotions and you combine that with one of the studies showing it links up to autism, one of the obvious clinical implications is that we can start to identify really stressed-out kids and kids that may be later diagnosed as Asperger's kids really early in life. And what we know from dozens of clinical studies is that the earlier you intervene, the better you do. We can, in effect, overcome that genetic propensity. So, clinically, this is really important for working with kids with different kinds of disorders.
Narrator: For Science Today, I'm Larissa Branin.