It is generally accepted that most personality traits carry a heritability estimate around 0.50 (50%). If John and Jane are siblings and John scores high on extroversion, while Jane only scored moderate on extroversion. What does this tell us about the siblings and their levels of extroversion?

Bob: coke is baby pandas.jim: what? how do you figure that coke is baby pandas? bob: because this book says so.jim: how do we know the book is correct? bob: because it says that coke is baby pandas.jim: how does that prove the book's accuracy? bob: because it's statement involving coke and baby pandas is correct, therefore it is accurate.jim: how do we know that it's correct? bob: because we have concluded that the book is accurate, and therefore the statement is correct.therefore, coke is baby pandas.