Oral communication involves a process between two or more people where messages are encoded and decoded. Effective communication has several key elements and characteristics including completeness, conciseness, consideration, concreteness, courtesy, clarity, and correctness. Barriers to communication can occur due to language differences, psychological or physiological factors, physical barriers, or attitudes. Intercultural communication requires an understanding and appreciation of cultural differences as well as skills like demonstrating willingness, checking understanding, and reflecting on experiences. Developing intercultural sensitivity involves moving through stages from denial to acceptance of other worldviews. Competent intercultural communicators are reflective, open-minded, sensitive, and adaptable.