That conclusion can help explain why body language can trigger congruent attitudes. If we display certain body language (e.g., head nodding), and if that body language is inconsistent with our inner attitude (e.g., we’re in disagreement), we feel a state of discomfort known as cognitive dissonance, and we become motivated to resolve that discomfort. How do we resolve it? We often resolve that dissonance by changing our attitude so that it matches our behavior (e.g., we change our attitude from disagreement to agreement to match our body language of nodding our head).
