Answer: Egocentrism
Explanation:
 Engocentrism is the inability to see or differentiate between self and another perspective. The egocentric person mainly believe that they are center of the attention such as narcissist but they does not received any type of gratification.
The egocentric are mainly found in the adulthood and the childhood as it indicates that the overcoming egocentric is the lifelong development. It also contribute in the cognitive development in the humans by helping the development of the children minds formation.