If there is any characteristic that is distinctly human, it is the capability for reflective self-consciousness.
Albert BanduraFrom the social cognitive perspective, it is mainly perceived inefficacy to cope with potentially aversive events that makes them fearsome. To the extent that people believe they can prevent, terminate, or lessen the severity of aversive events, they have little reason to be perturbed by them. But if they believe they are unable to manage threats safely, they have much cause for apprehension.
Albert Bandura