People think that top level sprinters cheat because they are so good but they don't realize that Nature and Nurture play a big part, how they train, diet and genes also make make up a top level sprinter.
You chose the article about learning fears and passed on fears, the Science study I put up talked about whether drug using parents had drug using children and i realized that sometimes people use drugs because they see their parents like i learned that people are scared of things because their parents tell them.