5. Cooperation - Activities in human society are usually done through working with others. Such cooperation is made possible using language. Language is used as a tool for them to understand each other in order to succeed in major endeavors. Without language, many complex activities of man would be impossible.
6. Personality Development – language has been described as a potent instrument for measuring personality. The quality of one’s voice, the speed pattern, smoothness of articulation all combine to determine individual’s personality