Body language maintain a certain amount of physical space between the other person. Tone of voice is a combination of spoken language and body language. The manner in which something is said can affect how it should be interpreted. Shouting, smiling, irony and so on may add a layer of meaning which is neither pure body language nor speech. Human communication is extremely complex and one must look at the whole in order to make any determination as to the attitudes being expressed. Body language is a major contributor to the attitude a person conveys to others. Albert Mehrabian maintains that during
Body language movement of any part of the body or the body as a whole; in layman's terms, it is the study of body language. However, Ray Birdwhistell, who is considered the founder of this area of study, never used the term "body language", and did not consider it appropriate. He argued that what can be conveyed with the body does not meet the linguist's definition of language. Birdwhistell pointed out that "human gestures differ from those of other animals in that they are polysemic, that they can be interpreted to have many different meanings depending on the communicative context in which