No, what I mean is that identical twins will be more similar on measures of ACEs than non-identical twins. Of course events aren't in the genes, but the propens

No, what I mean is that identical twins will be more similar on measures of ACEs than non-identical twins. Of course events aren't in the genes, but the propensity to have events happen to you can very easily be in the genes. This might be surprising, but the history of behaviour genetics is basically "everything being surprisingly more heritable than people thought". Indeed, from the article I cited: "HPA-axis function and depression are both influenced by genetic factors, which could increase the individual’s vulnerability to ACEs"; and here's an article that shows that being a victim of violent crime has heritability of around 20%: https://ajp.psychiatryonline.org/doi/full/10.1176/appi.ajp.159.10.1675 https://ajp.psychiatryonline.org/doi/full/10.1176/appi.ajp.1....