Answer: Psychological barrier
Explanation:
Psychological barrier is defined as the hurdles that occurs due to the faith a person persist in term of potential, worth, capabilities etc on their own-self.This behavior can produce incorrect manner of thinking due to which person tends to decline offers, show impaired behavior and persist lack of knowledge.
According to the question, the person is displaying psychological barrier as he is thinks that new proposed method by his boss is not required.He is displaying this thinking as per his dysfunctional thoughts because he thinks he has potential thinking capability.
