Two-ways communication is not exclusively beneficial. It also can cause
difficulties.
Polarization can happen when two people disagree over something but not
realized it until they establish two-way communication in which their different
viewpoints can be exposed.
Defensive Reasoning can happen when people threatened with the potential embarrassment of losing an argument in which people tend to abandon logic and rationality.
Cognitive Dissonance is the internal conflict and anxiety that occurs when people receive information incompatible with their value systems, prior decisions, or other information they may have.
Face Saving - Communication causes pressure since others are judging us by our communication. Face saving is an attempt to preserve our valued self-concept from personal attack, slurs, sarcastic criticism or harmful information from people during an emotional confrontation.