Barriers to effective communication can be social, psychological, cultural, physiological, related to system design, or physical. Social barriers include factors like gender, age, race, education level. Psychological barriers involve attitudes, fears, personality. Cultural barriers relate to differences in language, norms, beliefs. Physiological barriers are things like health issues or disabilities. System design barriers include unclear organizational structures or roles. Physical barriers consist of distractions or poor setting. To communicate effectively one must understand these barriers and bridge the gap between the encoded and decoded message to establish common understanding.