Genetic imprint from traumatic experiences carries through at least two generations.
It is quite interesting that there are two camps of viewpoints on this issue. As young kids, how do we know what is dangerous and what is not? Part of it is surly learned through observing others, being protected by adults. Though it is interesting to observe that children (at very young age) have instinctive aversion of certain things. How did they gain such knowledge? The article by Dias, points to possible underlying mechanism.
ps. This commentary is on an article published in nature neuro:
See on www.nature.com