Our sense of ownership is called the endowment effect

After witnessing the violent rage shown by babies whenever deprived of an item they considered their own,Jean Piaget, a founding father of child psychology,observed something profound
about human nature.Our sense of ownership emerges incredibly early.Why are we so clingy?There's a well-established phenomenon in psychology known as the endowment effect
where we value items much more highly just as soon as we own them.In one famous demonstration,students were given a choice
between a coffee mug or a Swiss chocolate bar as a reward for helping out with research.