Answer: Egocentrism.
Explanation:
According to the concept of Piaget, egocentrism is inability of a person of child to consider point-of-view of other people in any particular situation. They tends to believe that others have similar though , view and emotions as them for particular case.
According to the question, Arron is displaying egocentrism in which he is not able to understand feeling of criticism faced by other employees through message rather considers it as per his own thoughts. Therefore, he thinks others are also considering his message as funny.
