I’ve always held to the view that the root cause of poor behavior (towards others) is low self-esteem. That’s always made sense to me: if we don’t have enough self-confidence or belief in ourselves, how can we expect to accept others’ (differing) perspectives - and not react in some way?
Well, Adam Grant posited a somewhat different - perhaps a more nuanced - point of view, based on research published in journals such as Psychological Review.