When we experience an unpleasant state of tension between two or more conflicting thoughts, we usually

“Cognitive Dissonance” is a state of behavior when there is a tension within two or more different ideas.

Explanation:

When a person holds two or more thoughts, ideas, values or beliefs which are contradicting to each other, then the person is going through a mental discomfort or a psychological stress which is known a Cognitive Dissonance. If a person's thoughts or beliefs clash with the new evidences anticipated by him, then the stress or the discomfort is usually triggered. So, when the person's that contradiction thoughts, values or beliefs encounters with the facts, then he tries to find new ways to resolve the contradiction in order to reduce his stress and discomfort.

answer; george herbert mead;