Ever notice in movies when they show a long lineage of businessmen that have headed a family business, they always appear severe and the most common trait is an expression of displeasure? New research shows that negative expressions (anger, disgust, sadness) are more commonly inherited than positive ones (surprise, joy, though surprise could go either way, I suppose).
So the next time you chide your sibling and they respond that you're behaving just like your mother, you will have to concede that they're on to something.
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