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Nonverbal communication is usually understood as the process of communication through sending and receiving wordless (mostly visual) cues between people. Messages can be communicated through gestures and touch, by body language or posture, by facial expression and eye contact. Speech contains nonverbal elements known as paralanguage, including voice quality, rate, pitch, volume, and speaking style, as well prosodic features such as rhythm, intonation, and stress. Likewise, written texts have nonverbal elements such as handwriting style, spatial arrangement of words, or the physical layout of a page. However, much of the study of nonverbal communication has focused on face-to-face interaction, where it can be classified into three principal areas: environmental conditions where communication takes place, physical characteristics of the communicators, and behaviors of communicators during interaction.

Importance


“Most social psychologists will tell you that nonverbal communication makes up about two-thirds of all communication between two people or between one speaker and a group of listeners.” Nonverbal communication can portray a message both verbally and with the correct body signals. “There are numerous elements of what we call body language. They include physical features, both changeable and unchangeable, your gestures and signals you send to others at a conscious and unconscious level, and the space that you use when communicating with others.” The wrong message can be established if the body language conveyed does not match a verbal message. Nonverbal communication strengthens a first impression in common situations like attracting a partner or in a business interview. “You have less than ten seconds and realistically close to four seconds to make a good impression on those with whom you come in contact.” First encounters or interactions with another person strongly affect a person’s lifestyle. “People are more likely to believe that the first things they learn are the truth.” When the other person or group is absorbing the message they are focused on the entire environment around them, meaning, the other person uses all five senses in the interaction. “Sight makes up 83% of the impact on the brain of information from the senses during a visual presentation. Taste makes up 1%, Hearing makes up 11%, smell 3% and touch 2%.”

History
The first scientific study of nonverbal communication was Charles Darwin's book The Expression of the Emotions in Man and Animals. He argued that all mammals reliably show emotion in their faces. Seventy years later Silvan Tomkins (1911–1991) began his classic studies on human emotions in Affects Imagery Consciousness volumes 1-4. Rudolf Laban (1879–1958) and Warren Lamb (1923-) raised body movement analysis in the world of dance to a high level. Studies now range across a number of fields, including, linguistics, semiotics and social psychology. Another large influence in nonverbal communication was Birdwhistell. “ Anthropologist Ray Birdwhistell pioneered the original study of nonverbal communication—what he called ‘kinesics.’ He estimated that the average person actually speaks words for a total of about ten or eleven minutes a day and that the average sentence takes only about 2.5 seconds. Birdwhistell also estimated we can make and recognize around 250,000 facial expressions.”

First impression
A study revealed that students who rated a professor as highly likeable from only a two-second first impression found the class much more enjoyable throughout the semester versus the students who did not.”

Posture
Posture or a person's bodily stance communicates a variety of messages. Posture can be used to determine a participant’s degree of attention or involvement, the difference in status between communicators, and the level of fondness a person has for the other communicator, depending on body “openness”. Studies investigating the impact of posture on interpersonal relationships suggest that mirror-image congruent postures, where one person’s left side is parallel to the other person’s right side, leads to favorable perception of communicators and positive speech; a person who displays a forward lean or decreases a backward lean also signifies positive sentiment during communication.

There are many different types of posture. Some of these postures include: slouching, towering, legs spread, jaw thrust, shoulders forward, and arm crossing. These nonverbal behaviors can indicate feelings and attitudes toward another person.

Posture can be situation-relative. “A nineteen-year-old college student from New York will use different postures than a Mid-western housewife, and a construction worker in the state of Washington will use different postures than a salesman in Chicago Another example of posture being situational on more of a daily basis can be described in Driver’s book: “Four situational norms of posture would be, Flirting, where the norm is 60% eye contact, Job Interview with a relaxed and open body language, Business Negotiation where the norm is leaning back while steeping and Buying a Car where most have hands on hips with feet more than ten inches apart.”

Clothing
Clothing is one of the most common forms of non-verbal communication. The study of clothing and other objects as a means of non-verbal communication is known as artifactics or objectics. The types of clothing that an individual wears convey nonverbal clues about his or her personality, background and financial status, and how others will respond to them, for instance, “Miniskirts can give a woman the appearance that she is not approachable.” This demonstrates a certain response, in this case, a negative and unapproachable response, simply via appearance. It is important to understand that their exterior and demeanor influence how others will react to them. An individual’s clothing style can demonstrate their culture, mood, level of confidence, interests, age, authority, value/beliefs, and their sexual identity. Some examples of a person’s clothing type in which a negative message is being conveyed could include the following: A person with a sloppy appearance, messy hair, and wrinkled clothes sends the message, "I don't care". Also, a woman who wears a tight dress with a low-cut neckline may convey the message "I'm attractive and sexy" or “Want to come back to my place tonight"? By showing the positive aspects of his or her self through dress attire and grooming, one can inspire confidence in his or her abilities.

A study, carried out in Vienna, Austria, of the clothing worn by women attending discothèques showed that in certain groups of women (especially women who were without their partners), motivation for sex and levels of sexual hormones were correlated with aspects of their clothing, especially the amount of skin displayed and the presence of sheer clothing. Thus, to some degree, clothing sends signals about interest in courtship.

Gestures
Gestures may be made with the hands, arms or body, and also include movements of the head, face and eyes, such as winking, nodding, or rolling one's eyes. Although the study of gesture is still in its infancy, some broad categories of gestures have been identified by researchers. The most familiar are the so-called emblems or quotable gestures. These are conventional, culture-specific gestures that can be used as replacement for words, such as the hand wave used in western cultures for "hello" and "goodbye." A single emblematic gesture can have a very different significance in different cultural contexts, ranging from complimentary to highly offensive. For a list of emblematic gestures, see List of gestures. There are some universal gestures like the shoulder shrug. “The shoulder shrug is a good example of a universal gesture that is used to show that a person doesn’t know or doesn’t understand what you are saying. It’s a multiple gesture that has three main parts: exposed palms to show nothing is being concealed in the hands, hunched shoulders to protect the throat from attack, and raised brow, which is a universal, submissive greeting”

Gestures can also be categorized as either speech independent or speech related. Speech-independent gestures are dependent upon culturally accepted interpretation and have a direct verbal translation. A wave or a [V-signa| peace sign] are examples of speech-independent gestures. Speech-related gestures are used in parallel with verbal speech; this form of nonverbal communication is used to emphasize the message that is being communicated. Speech-related gestures are intended to provide supplemental information to a verbal message such as pointing to an object of discussion.

Facial expressions, more than anything, serve as a practical means of communication. With all the various muscles that precisely control mouth, lips, eyes, nose, forehead,and jaw, human faces are estimated to be capable of more than ten thousand different expressions. This versatility makes non-verbals of the face extremely efficient and honest, unless deliberately manipulated. In addition, many of these emotions, including happiness, sadness, anger, fear, surprise, disgust, shame, anguish and interest are universally recognized. Displays of emotions can generally be categorized into two groups: negative and positive. Negative emotions usually manifest as increased tension in various muscle groups: tightening of jaw muscles, furrowing of forehead, squinting eyes, or lip occlusion (when the lips seemingly disappear). In contrast, positive emotions are revealed by the loosening of the furrowed lines on the forehead, relaxation of the muscles around the mouth, and widening of the eye area. When individuals are truly relaxed and at ease, the head will also tilt to the side, exposing our most vulnerable area, the neck. This is a high-comfort display, often seen during courtship, that is nearly impossible to mimic when we are tense or suspicious.

Engagement
Eye-contact is the primary notion to where a message of attention is being conveyed in engagement with Nonverbal communication. Eye contact is when two people look at each other's eyes at the same time; it can indicate interest, attention, and involvement. Studies have found that people use their eyes to indicate their interest and not just with the frequently recognized actions of winking and movements of the eyebrows, but it can indicate social behavior. Men and women have different ways of eye contact. Men stare at the women they are interested in, whereas women tend to always keep their eyes roaming around the room to see who is there. Disinterest is highly noticeable when showing little eye-contact in a social setting. Pupils dilate when they are interested in the other person. People, sometimes, even, without consciously doing so, probe each other's eyes and faces for positive or negative mood signs. Generally speaking, the longer the eye contact between two people the greater the intimacy is felt inside According to Eckman,“Eye contact (also called mutual gaze) is another major channel of nonverbal communication. The duration of eye contact is its most meaningful aspect.) Gaze comprises the actions of looking while talking and listening. The length of a gaze, the frequency of glances, patterns of fixation, pupil dilation, and blink rate are all important cues in nonverbal communication. “Liking generally increases as mutual gazing increases.” [8] Along with the detection of disinterest, deceit can also be observed in a person. Hogan states “when someone is being deceptive their eyes tend to blink a lot more. Eyes act as leading indicator of truth or deception,” Eye aversion is the avoidance of eye contact. Eye contact and facial expressions provide important social and emotional information. Overall, as Pease states, “Give the amount of eye contact that makes everyone feel comfortable. Unless looking at others is a cultural no-no, lookers gain more credibility than non-lookers”

In concealing deception, nonverbal communication makes it easier to lie without being revealed. This is the conclusion of a study where people watched made-up interviews of persons accused of having stolen a wallet. The interviewees lied in about 50% of the cases. People had access to either written transcript of the interviews, or audio tape recordings, or video recordings. The more clues that were available to those watching, the larger was the trend that interviewees who actually lied were judged to be truthful. That is, people that are clever at lying can use voice tone and face expression to give the impression that they are truthful. However, there are many cited examples of cues to deceit, delivered via nonverbal (Para verbal and visual) communication channels, through which deceivers supposedly unwittingly provide clues to their concealed knowledge or actual opinions. Most studies examining the nonverbal cues to deceit rely upon human coding of video footage (c.f. Vrij, 2008 ), although a recent study also demonstrated bodily movement differences between truth-tellers and liars using an automated body motion capture system.

Deceit also involves distress. One recent study set out to find how well people could communicate distress signals non-verbally. The research shows that you can identify certain social cues that can help you to predict that person's behavior. This is not always true though. The cues depend on the mindset of the person and cannot be predicted. The study was able to find 55 identifiable distress cues.[42]

Across Cultures
Nonverbal communication can have different meanings according to different cultures. Foreigners may even be confused about universal emotions. “In many cultures, such as the Arab and Iranian cultures, people express grief openly. They mourn out loud, while in Asian cultures, the general belief is that it is unacceptable to show emotion openly." Gestures, postures, haptics, clothing, eye contact and proxemics all can be understood differently across the world. Understanding the differences when working across cultures is very important.

One common example in the United States, is the gesture of a finger or hand to indicate “come here please”. This is the gesture used to beckon dogs in some cultures. Pointing with one finger is also considered to be rude in some cultures and Asians typically use their entire hand to point to something.

In mainstream Western culture, eye contact is interpreted as attentiveness and honesty. In many cultures, however, including Hispanic, Asian, Middle Eastern, and Native American, eye contact is thought to be disrespectful or rude, and lack of eye contact does not mean that a person is not paying attention. Women may especially avoid eye contact with men because it can be taken as a sign of sexual interest.

The acceptable physical distance is another major difference in the nonverbal communication between cultures. In Latin America and the Middle East the acceptable distance is much shorter than what most Europeans and Americans feel comfortable with. This is why an American or a European might wonder why the other person is invading his or her personal space by standing so close, while the other person might wonder why the American/European is standing so far from him or her.

Nonverbal Communication in Indigenous Communities of the Americas
In Indigenous Mayan communities of the Americas, children learn how to partake in adult activities through nonverbal communication. Children are able to learn in this manner due to their exposure to adult activities at a young age. At a young age, children intently observe and listen in on adult activities, and this helps provide them with a running knowledge on how to participate. As a result, when children take on adult activities for themselves the first time they do not need verbal communication in the form of directions from adults. They can learn how to do the adult activity themselves through physically participating in it. In fact, talk acts only as a supplement to engagement in an activity. For instance, when a child engages in adult activities, spoken communication can be used to explore ideas or discuss need-to-know information. Otherwise, caregivers and adults primarily help guide their children through an activity using non-verbal communication such as visual demonstration, gestures, gaze and touch.

In Indigenous Mayan communities, when a child needs assistance adults will primarily use illustrative acts in the form of nonverbal communication to guide the child in a successful direction for the activity. For example, a Mayan parent could demonstrate to their child how to hold dough in a manner which allows for smooth flattening when making tortillas. In effect, when the child sees that the dough was flattened from the demonstration, they could try it for themselves and learn first hand how to make it flat. In that sense, by observing a nonverbal demonstration of the activity and trying it firsthand, Mayan children learn how to participate in adult activities.

Nonverbal communication is important as a way of learning for children of Indigenous Mayan communities, because it allows for children’s autonomy and for horizontal collaboration. Mayan parents do not need to give lots of forceful verbal directives to their children to make sure they are participating effectively. Instead, parents collaborate non verbally with their children to guide them through the activity, and doing so is enough to ensure children do the activity successfully. By communicating nonverbally, parents allow their children to have more individual development during their participation in adult activities. The belief is that since parents aren’t constantly intruding in on the child’s learning experience with verbal clarifications, the child can explore more of how the activity works for themselves. Furthermore, by having nonverbal collaboration, children benefit from the assistance of people who are skillful at the adult practice. The result is that on top of their initial knowledge of adult activities, children’s understanding can be further be strengthened through the nonverbal guidance from adult expertise.

Genetics
“In the study of nonverbal communications, the limbic brain is where the action is…because it is the part of the brain that reacts to the world around us reflexively and instantaneously, in real time, and without thought.” Genetics is a harder field to study in dealing with Nonverbal Communication, but there is evidence that the nonverbal cues made from person-to-person do not entirely have something to do with environment. “When you cross your arms on your chest, do you cross left over right or right over left? – Seven out of ten people cross their left arm over their right…Evidence suggests that this may well be a genetic gesture that cannot be changed.” So how is it studied in an entirely environmentally free environment? “Evidence has been collected from observation of blind people (who could not have learned nonverbal signals through a visual channel).”

Other than gestures, phenotypic traits can also convey certain messages in nonverbal communication, for instance, eye color, hair color and height. Research into height has generally found that taller people are perceived as being more impressive. Melamed and Bozionelos (1992) studied a sample of managers in the United Kingdom and found that height was a key factor in who was promoted. Height can have benefits and depressors too. “Being tall, however, is not always a bonus. While tall people often command more respect than short people, height can also be detrimental to some aspects of one-to-one communication, for instance, where you need to ‘talk on the same level’ or have an ‘eye-to-eye’ discussion with another person and do not want to be perceived as too big for your boots.”

Proxemics: Physical Space in Communication
When you are talking to someone stay out of their “ intimate space” they want to talk to you but just do not want to have you all over them. “ Most animals have a certain air space around their bodies that they claim as their personal space…1-18 in being the intimate zone, 18-48 in being the personal zone, 4-12 ft. being the social zone and the public zone at over 12 ft.”

Proxemics is the study of how people use and perceive the physical space around them. The space between the sender and the receiver of a message influences the way the message is interpreted. In addition, the perception and use of space varies significantly across cultures and different settings within cultures. Space in nonverbal communication may be divided into four main categories: intimate, social, personal, and public space.

The term territoriality is used in the study of proxemics to explain human behavior regarding personal space. Hargie & Dickson (2004, p. 69) identify 4 such territories:
 * 1) 	Primary territory: This refers to an area that is associated with someone who has exclusive use of it. An example is a house that others cannot enter without the owner’s permission.
 * 2) 	Secondary territory: Unlike primary territory, there is no “right” to occupancy of secondary territory, but people may still feel some degree of ownership of such space as they develop the custom of occupying it. For example, someone may sit in the same seat in church every week and feel irritated if someone else sits there.
 * 3) 	Public territory: this refers to an area that is available to all, but only for a set period, such as a parking space or a seat in a library. Although people have only a limited claim over that space, they often extend that claim. For example, it was found that people take longer to leave a parking space when someone is waiting to take that space.
 * 4) 	Interaction territory: this is space held by others when they are interacting. For example, when a group is talking to each other on a footpath, others will walk around the group rather than disturb their interaction territory.

Kinesics
The term "kinesics" was first used (in 1952) by Ray Birdwhistell, an anthropologist who wished to study how people communicate through posture, gesture, stance, and movement. Part of Birdwhistell's work involved making films of people in social situations and analyzing them to show different levels of communication not clearly seen otherwise. Several other anthropologists, including Margaret Mead and Gregory Bateson, also studied kinesics.

Haptics: touching in communication
Haptics is the study of touching as nonverbal communication, and haptic communication refers to how people and other animals communicate via touching.

Touches among humans that can be defined as communication include handshakes, holding hands, kissing (cheek, lips, hand), back slapping, high fives, a pat on the shoulder, and brushing an arm. Touching of oneself may include licking, picking, holding, and scratching. These behaviors are referred to as "adapters" or "tells" and may send messages that reveal the intentions or feelings of a communicator and a listener. The meaning conveyed from touch is highly dependent upon the culture, the context of the situation, the relationship between communicators, and the manner of touch.

Touch is an extremely important sense for humans; as well as providing information about surfaces and textures it is a component of nonverbal communication in interpersonal relationships, and vital in conveying physical intimacy. It can be both sexual (such as kissing) and platonic (such as hugging or tickling).

Touch is the earliest sense to develop in the fetus. The development of an infant's haptic senses and how it relates to the development of the other senses such as vision have been the target of much research. Human babies have been observed to have enormous difficulty surviving if they do not possess a sense of touch, even if they retain sight and hearing. Babies who can perceive through touch, even without sight and hearing, tend to fare much better. Touch can be thought of as a basic sense in that most life forms have a response to being touched, while only a subset have sight and hearing.

In chimpanzees the sense of touch is highly developed. As newborns they see and hear poorly but cling strongly to their mothers. Harry Harlow conducted a controversial study involving rhesus monkeys and observed that monkeys reared with a "terry cloth mother," a wire feeding apparatus wrapped in soft terry cloth that provided a level of tactile stimulation and comfort, were considerably more emotionally stable as adults than those with a mere wire mother.(Harlow,1958)

Touching is treated differently from one country to another and socially acceptable levels of touching vary from one culture to another (Remland, 2009). In Thai culture, for example, touching someone's head may be thought rude. Remland and Jones (1995) studied groups of people communicating and found that touching was rare among the English (8%), the French (5%) and the Dutch (4%) compared to Italians (14%) and Greeks (12.5%).

Striking, pushing, pulling, pinching, kicking, strangling and hand-to-hand fighting are forms of touch in the context of physical abuse. In a sentence like "I never touched him/her" or "Don't you dare touch him/her," the term touch may be meant as a euphemism for either physical abuse or sexual touching. To "touch oneself" is a euphemism for masturbation.

Stoeltje (2003) wrote about how Americans are "losing touch" with this important communication skill. During a study conducted by University of Miami School of Medicine, Touch Research Institutes, American children were said to be more aggressive than their French counterparts while playing at a playground. It was noted that French women touched their children more.

Functions of nonverbal communication
Argyle (1970) put forward the hypothesis that whereas spoken language is normally used for communicating information about events external to the speakers, non-verbal codes are used to establish and maintain interpersonal relationships. It is considered more polite or nicer to communicate attitudes towards others non-verbally rather than verbally, for instance in order to avoid embarrassing situations.

Argyle (1988) concluded there are five primary functions of nonverbal bodily behavior in human communication:


 * Express emotions
 * Express interpersonal attitudes
 * To accompany speech in managing the cues of interaction between speakers and listeners
 * Self-presentation of one’s personality
 * Rituals (greetings)

In regards to expressing interpersonal attitudes, humans communicate interpersonal closeness through a series of nonverbal actions known as immediacy behaviors. Examples of immediacy behaviors are smiling, touching, open body positions, and eye contact. Cultures that display these immediacy behaviors are considered high-contact cultures.

Criticism
An interesting question is: When two people are communicating face-to-face, how much of the meaning is communicated verbally, and how much is communicated non-verbally? This was investigated by Albert Mehrabian and reported in two papers. The latter paper concluded: "It is suggested that the combined effect of simultaneous verbal, vocal, and facial attitude communications is a weighted sum of their independent effects - with coefficients of .07, .38, and .55, respectively." This "rule" that clues from spoken words, from the voice tone, and from the facial expression, contribute 7%, 38%, and 55% respectively to the total meaning, is widely cited. It is presented on all types of popular courses with statements like "scientists have found out that . . . ". In reality, however, it is extremely weakly founded. First, it is based on the judgment of the meaning of single tape-recorded words, i.e. a very artificial context. Second, the figures are obtained by combining results from two different studies which potentially cannot be combined. Third, it relates only to the communication of positive versus negative emotions. Fourth, it relates only to women, as men did not participate in the study.

Since then, other studies have analysed the relative contribution of verbal and nonverbal signals under more naturalistic situations. Argyle, using video tapes shown to the subjects, analysed the communication of submissive/dominant attitude and found that non-verbal cues had 4.3 times the effect of verbal cues. The most important effect was that body posture communicated superior status in a very efficient way. On the other hand, a study by Hsee et al. had subjects judge a person on the dimension happy/sad and found that words spoken with minimal variation in intonation had an impact about 4 times larger than face expressions seen in a film without sound. Thus, the relative importance of spoken words and facial expressions may be very different in studies using different set-ups.

Interaction of verbal and nonverbal communication
When communicating, nonverbal messages can interact with verbal messages in six ways: repeating, conflicting, complementing, substituting, regulating and accenting/moderating. Conflicting Verbal and nonverbal messages within the same interaction can sometimes send opposing or conflicting messages. A person verbally expressing a statement of truth while simultaneously fidgeting or avoiding eye contact may convey a mixed message to the receiver in the interaction. Conflicting messages may occur for a variety of reasons often stemming from feelings of uncertainty, ambivalence, or frustration.[23]When mixed messages occur, nonverbal communication becomes the primary tool people use to attain additional information to clarify the situation; great attention is placed on bodily movements and positioning when people perceive mixed messages during interactions

Complementing
Accurate interpretation of messages is made easier when nonverbal and verbal communication complement each other. Nonverbal cues can be used to elaborate on verbal messages to reinforce the information sent when trying to achieve communicative goals; messages have been shown to be remembered better when nonverbal signals affirm the verbal exchange.

Substituting
Nonverbal behavior is sometimes used as the sole channel for communication of a message. People learn to identify facial expressions, body movements, and body positioning as corresponding with specific feelings and intentions. Nonverbal signals can be used without verbal communication to convey messages; when nonverbal behavior does not effectively communicate a message, verbal methods are used to enhance understanding.

Clinical studies of nonverbal communication
From 1977 to 2004, the influence of disease and drugs on receptivity of nonverbal communication was studied by teams at three separate medical schools using a similar paradigm. Researchers at the University of Pittsburgh, Yale University and Ohio State University had subjects observe gamblers at a slot machine awaiting payoffs. The amount of this payoff was read by nonverbal transmission prior to reinforcement. This technique was developed by and the studies directed by psychologist, Dr. Robert E. Miller and psychiatrist, Dr. A. James Giannini. These groups reported diminished receptive ability in heroin addicts and phencyclidine abusers was contrasted with increased receptivity in cocaine addicts. Men with major depression manifested significantly decreased ability to read nonverbal cues when compared with euthymic men. In some subjects tested for ability to read nonverbal cues, intuitive paradigms were apparently employed while in others a  cause and effect approach was used. Subjects in the former group answered quickly and before reinforcement occurred. They could not give a rationale for their particular responses. Subjects in the latter category delayed their response and could offer reasons for their choice.The level of accuracy between the two groups did not vary nor did handedness.

Freitas-Magalhaes studied the effect of smile in the treatment of depression and concluded that depressive states decrease when you smile more often.

Obese women and women with premenstrual syndrome were found to also possess diminished abilities to read these cues. In contradistinction, men with bipolar disorder possessed increased abilities. A woman with total paralysis of the nerves of facial expression was found unable to transmit or receive any nonverbal facial cues whatsoever. Because of the changes in levels of accuracy on the levels of nonverbal receptivity, the members of the research team hypothesized a biochemical site in the brain which was operative for reception of nonverbal cues. Because certain drugs enhanced ability while others diminished it, the neurotransmitters dopamine and endorphin were considered to be likely etiological candidate. Based on the available data, however, the primary cause and primary effect could not be sorted out on the basis of the paradigm employed.

Young Children's Comprehension of Nonverbal Communtication
An increased emphasis on gestures exists when intonations or facial expression are used. It is best articulated in the study “Young children’s understanding of markedness in non-verbal communication” by the Journal of Human Language, stating; “Speakers often anticipate how recipients will interpret their utterances. It they wish some other, less obvious interpretation, they may “mark” their utterance (e.g. with special intonations or facial expressions).”  This specific emphasis known as ‘marking’ can be spotted as a learned form of non-verbal communication in toddlers. A groundbreaking study, from the Journal of Child Language has concluded that the act of marking a gesture is recognized by three-year-olds, but not by two-year-.

In the study, two and three-year-old toddlers were tested on their recognition of markedness within gestures. The experiment was conducted in a room with an examiner and the test subjects, which for the first study were three-year-olds. The examiner sat across from each child individually, and allowed them to play with various objects including a purse with a sponge in it and a box with a sponge in it. After allowing the child to play with the objects for three minutes, the examiner told the child it was time to clean up and motioned by pointing to the objects. They measured the responses of the children by first pointing and not marking the gesture, to see the child’s reaction to the request and if they reached for the objects to clean them up. After observing the child’s response, the examiner then asked and pointed again, marking the gesture with facial expression, as to lead the child to believe the objects were supposed to be cleaned up. The results showed that three-year-old children were able to recognize the markedness, by responding to the gesture and cleaning the objects up as opposed to when the gesture was presented without being marked. In the second study in which the same experiment was preformed on three-year-olds, the results were different. For the most part, the children did not recognize the difference between the marked and unmarked gesture by not responding more prevalently to the marked gesture, unlike the results of the three-year-olds. This shows that this sort of nonverbal communication is learned at a young age, and is better recognized in three-year-old children than two-year-old children, making it easier for us to interpret that the ability to recognize markedness is learned in the early stages of development, somewhere between three and four years of age.

Boone and Cunningham conducted a study to determine at which age children begin to recognize emotional meaning (happiness, sadness, anger and fear) in expressive body movements. The study included 29 adults and 79 children divided into age groups of four, five and eight year olds. The children were shows two clips simultaneously and were asked to point to the one that was expressing the target emotion. The results of the study revealed that of the four emotions being tested the 4-year-olds were only able to correctly identify sadness at a rate that was better than chance. The 5-year-olds performed better and were able to identify happiness, sadness and fear at better than chance levels. The 8-year-olds and adults could correctly identify all four emotions and there was very little difference between the scores of the two groups. Between the ages of 4 and 8 nonverbal communication and decoding skills improve dramatically. Boone and Cunningham concluded that their results are consistent with previous research on other nonverbal channels of communication.

Comprehension of Nonverbal Facial Cues
A byproduct of the work of the Pittsburgh/Yale/ Ohio State team was an investigation of the role of nonverbal facial cues in heterosexual nondate rape. Males who were serial rapists of adult women were studied for nonverbal receptive abilities. Their scores were the highest of any subgroup. Rape victims were next tested. It was reported that women who had been raped on at least two occasions by different perpetrators had a highly significant impairment in their abilities to read these cues in either male or female senders. These results were troubling, indicating a predator-prey model. The authors did note that whatever the nature of these preliminary findings the responsibility of the rapist was in no manner or level, diminished.

The final target of study for this group was the medical students they taught. Medical students at Ohio State University, Ohio University and Northest Ohio Medical College were invited to serve as subjects. Students indicating a preference for the specialties of family practice, psychiatry, pediatrics and obstetrics-gynecology achieved significantly higher levels of accuracy than those students who planned to train as surgeons, radiologists, or pathologists. Internal medicine and plastic surgery candidates scored at levels near the mean.

Conclusion
Nonverbal communication is the process of sending and receiving messages from another person. These messages can be conveyed through gestures, engagement, posture, and even clothing and hygiene. Nonverbal communication can convey a very different message than a verbal conversation. This can tell someone whether they are liked, interesting or hated. Nonverbal communication can have meanings in objects as well. Certain articles in a person’s life can say a lot about them and can sometimes even talk for them. A person’s handwriting can also tell a lot about the way they can communicate with others. Nonverbal communication can be easiest practiced when the two communicators are face to face. The nonverbal aspect of communication is easiest when the environment is right for all communicators involved, such as, when the environment is right or the moment is right. Nonverbal communication is an important aspect in any conversation skill people are practicing. Nonverbal communication will inhibit someone to be able to tell other person how they are really feeling without having to voice any opinions. People can interpret body signals better than they can talk most of the time.