From 1977 to 2004, the influence of diseases and drugs on the receptivity of non-verbal communication by teams from three different medical schools was studied using a similar paradigm.  Researchers from the University of Pittsburgh, Yale University and Ohio State University observed players at a slot machine waiting for withdrawals. The amount of this payment was read by the non-verbal transmission prior to the reinforcement. This technique was developed by and studies conducted by psychologist Robert E. Miller and psychiatrist A. James Giannini. These groups reported a decrease in receptive capacity among heroin addicts and phencyclidine abusers, as opposed to increased receptivity among cocaine addicts. Men with severe depression showed a significant decrease in the ability to read non-verbal indications compared to euthymic men. In addition to gestures, phenotypic traits can convey certain messages in non-verbal communication, such as eye color, hair color and body size. Height research has generally found that taller people are perceived as more impressive. Melamed and Bozionelos (1992) examined a sample of managers in the United Kingdom and found that the amount was a key factor for transportation.
Height can also have benefits and depressants. “While tall people often demand more respect than short people, altitude can also be detrimental to certain aspects of one-for-one communication, for example, if you have to “talk at the same level” or have an “eye-to-face” discussion with another person and not be perceived as too big for boots.”  Non-verbal communication is a quick back-and-forth process that requires your full focus on the time-to-moment experience. If you plan what you`re going to say next, check your phone or think about something else, you`ll almost certainly miss non-verbal cues and won`t fully understand the intricacies of what`s being communicated. Not only are you fully present, but you can also improve the way you communicate non-verbally by learning to manage stress and develop your emotional awareness. Timing and Location – Is there a simple flow of back and forth information? Are non-verbal reactions coming too quickly or too slowly? In 1970, Argyle assumed that nonverbal language is used to communicate the importance of events outside of the person`s communication, but non-verbal codes are used to create and strengthen interpersonal relationships.  If someone wants to avoid conflicting or embarrassing events during communication, the assumption is that it is fair and fair to communicate attitudes towards others non-verbally rather than verbally.  With this philosophy, Michael Argyle found in 1988 that there were five main functions of non-verbal bodily behaviour and gestures in human communication: self-representation of one`s personality, rituals and cultural greetings, expression of interpersonal attitudes, expression of emotions and accompaniment of language in the management of incoraties, which are placed in the interactions between the speaker and the speaker.  Once you have developed your abilities to manage stress and detect emotions, you will begin to better read other people`s non-verbal signals. This is also important: it is important to note that non-verbal communication is more common in native American communities, but that verbal communication is also used.
Preferably, verbal communication is not a substitute for participation in an activity, but serves as additional guidance and support for the conclusion of an activity.  thinks he gets along well with his co-workers at work, but if one of them were asked, they would say that Jack is “intimidating” and “very intense.” Instead of looking at you, he seems to devour you with his eyes. And when he takes your hand, he gets it and he pushes so hard that it hurts. Jack is a caring man who secretly wishes to have more friends, but his non-verbal clumsiness keeps people at bay and limits his ability to move forward at work.