Communication; in the form of speech is a very powerful tool used by everyone. It can be used by great powers to dictate their opinions; it is used by companies to conduct commercial transactions, business, etc. And it is used by the average person too. A barrier is an obstacle that keeps people apart and prevents them from communicating effectively; so there are many barriers that prevent people from communicating effectively. Personality Sometimes personality can be a big problem in communicating effectively as some people are not always willing to communicate; and would rather trust his own opinions than listen to someone else. For example, some people have very domineering personalities and try to impose their opinions on other people. Furthermore, there are people who are unable to communicate with others because they could. Disability Disability can be a huge barrier to effective communication; but this largely depends on the person's disability. For example, if the person with a disability was deaf, other people would have to communicate with him using sign language. Another hex...