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Back cover of the Voyager Golden Record with instructional engraving for intelligent extraterrestrial life The Sounds of Earth Record Cover - GPN-2000-001978.jpg
Back cover of the Voyager Golden Record with instructional engraving for intelligent extraterrestrial life

Communication (from Latin : communicare, meaning "to share" or "to be in relation with") [1] [2] [3] is "an apparent answer to the painful divisions between self and other, private and public, and inner thought and outer world." [4] As this definition indicates, communication is difficult to define in a consistent manner, [5] [6] because in common use it refers to a very wide range of different behaviours involved in the propagation of information. [7] John Peters argues the difficulty of defining communication emerges from the fact that communication is both a universal phenomenon (because everyone communicates) and a specific discipline of institutional academic study. [8] One definitional strategy involves limiting what can be included in the category of communication (for example, requiring a "conscious intent" to persuade [9] ). By this logic, one possible definition of communication is the act of developing meaning among entities or groups through the use of sufficiently mutually understood signs, symbols, and semiotic conventions.


In Claude Shannon's and Warren Weaver's influential [10] [11] model, human communication was imagined to function like a telephone or telegraph. [12] Accordingly, they conceptualized communication as involving discrete steps:

  1. The formation of communicative motivation or reason.
  2. Message composition (further internal or technical elaboration on what exactly to express).
  3. Message encoding (for example, into digital data, written text, speech, pictures, gestures and so on).
  4. Transmission of the encoded message as a sequence of signals using a specific channel or medium.
  5. Noise sources such as natural forces and in some cases human activity (both intentional and accidental) begin influencing the quality of signals propagating from the sender to one or more receivers.
  6. Reception of signals and reassembling of the encoded message from a sequence of received signals.
  7. Decoding of the reassembled encoded message.
  8. Interpretation and making sense of the presumed original message.

These elements are now understood to be substantially overlapping and recursive activities rather than steps in a sequence. [13] For example, communicative actions can start before a communicator formulates a conscious attempt to do so, [14] as in the case of phatics; likewise, communicators modify their intentions and formulations of a message in response to real-time feedback (e.g., a change in facial expression). [15] Practices of decoding and interpretation are culturally enacted, not just by individuals (genre conventions, for instance, trigger anticipatory expectations for how a message is to be received), and receivers of any message operationalize their own frames of reference in interpretation. [16]

The scientific study of communication can be divided into:

Communication can be realized visually (through images and written language), through auditory, tactile/haptic (e.g. Braille or other physical means), olfactory, electromagnetic, or biochemical means (or any combination thereof). Human communication is unique for its extensive use of abstract language.


Non-verbal communication

Nonverbal communication explains the processes that convey a type of information in a form of non-linguistic representations. Examples of nonverbal communication include haptic communication, chronemic communication, gestures, body language, facial expressions, eye contact etc. Nonverbal communication also relates to the intent of a message. Examples of intent are voluntary, intentional movements like shaking a hand or winking, as well as involuntary, such as sweating. [17] Speech also contains nonverbal elements known as paralanguage, e.g. rhythm, intonation, tempo, and stress. It affects communication most at the subconscious level and establishes trust. Likewise, written texts include nonverbal elements such as handwriting style, the spatial arrangement of words and the use of emoticons to convey emotion.

Nonverbal communication demonstrates one of Paul Watzlawick's laws: you cannot not communicate. Once proximity has formed awareness, living creatures begin interpreting any signals received. [18] Some of the functions of nonverbal communication in humans are to complement and illustrate, to reinforce and emphasize, to replace and substitute, to control and regulate, and to contradict the denotative message.

Nonverbal cues are heavily relied on to express communication and to interpret others' communication and can replace or substitute verbal messages.

There are several reasons as to why non-verbal communication plays a vital role in communication:

"Non-verbal communication is omnipresent." [19] They are included in every single communication act. To have total communication, all non-verbal channels such as the body, face, voice, appearance, touch, distance, timing, and other environmental forces must be engaged during face-to-face interaction. Written communication can also have non-verbal attributes. E-mails, web chats, and the social media have options to change text font colours, stationery, add emoticons, capitalization, and pictures in order to capture non-verbal cues into a verbal medium. [20]

"Non-verbal behaviours are multifunctional." [21] Many different non-verbal channels are engaged at the same time in communication acts and allow the chance for simultaneous messages to be sent and received.

"Non-verbal behaviours may form a universal language system." [21] Smiling, crying, pointing, caressing, and glaring are non-verbal behaviours that are used and understood by people regardless of nationality. Such non-verbal signals allow the most basic form of communication when verbal communication is not effective due to language barriers.

When verbal messages contradict non-verbal messages, observation of non-verbal behaviour is relied on to judge another's attitudes and feelings, rather than assuming the truth of the verbal message alone.

Verbal communication

Verbal communication is the spoken or written conveyance of a message. Human language can be defined as a system of symbols (also known as lexemes) and the grammars (rules) by which the symbols are manipulated. The word "language" also refers to common properties of languages. Language learning normally occurs most intensively during human childhood. Most of the large number of human languages use patterns of sound or gesture for symbols which enable communication with others around them. Languages tend to share certain properties, although there are exceptions. Constructed languages such as Esperanto, programming languages, and various mathematical formalisms are not necessarily restricted to the properties shared by human languages.

As previously mentioned, language can be characterized as symbolic. Charles Ogden and I.A Richards developed The Triangle of Meaning model to explain the symbol (the relationship between a word), the referent (the thing it describes), and the meaning (the thought associated with the word and the thing).

Communicators' diverse efforts to produce and interpret meaning in language are functionally constrained by that language's prototypical phonology (sounds that typically appear in a language), morphology (what counts as a word), syntax (word-order), semantics (conventional meaning of words), and pragmatics (which meanings are conventional to which contexts).

The meanings that are attached to words can be literal, or otherwise known as denotative; relating to the topic being discussed, or, the meanings take context and relationships into account, otherwise known as connotative; relating to the feelings, history, and power dynamics of the communicators. [22]

Contrary to popular belief, signed languages of the world (e.g., American Sign Language) are considered to be verbal communication because their sign vocabulary, grammar, and other linguistic structures abide by all the necessary classifications as spoken languages. There are however, nonverbal elements to signed languages, such as the speed, intensity, and size of signs that are made. A signer might sign "yes" in response to a question, or they might sign a sarcastic-large slow yes to convey a different nonverbal meaning. The sign yes is the verbal message while the other movements add nonverbal meaning to the message.

Written communication and its historical development

Over time the forms of and ideas about communication have evolved through the continuing progression of technology. Advances include communications psychology and media psychology, an emerging field of study.

The progression of written communication can be divided into three "information communication revolutions": [23]

  1. Written communication first emerged through the use of pictographs. The pictograms were made in stone, hence written communication was not yet mobile. Pictograms began to develop standardized and simplified forms.
  2. The next step occurred when writing began to appear on paper, papyrus, clay, wax, and other media with commonly shared writing systems. Communication became mobile.
  3. The final stage is characterized by the transfer of information through controlled waves of electromagnetic radiation (i.e., radio, microwave, infrared) and other electronic signals.

Communication is thus a process by which meaning is assigned and conveyed in an attempt to create shared understanding. Gregory Bateson called it "the replication of tautologies in the universe. [24] This process, which requires a vast repertoire of skills in interpersonal processing, listening, observing, speaking, questioning, analyzing, gestures, and evaluating enables collaboration [25] [26] and cooperation. [27] [ full citation needed ] [28] [29]

Communication models

Lasswells Model of Communication

Harold Lasswell was a major theorist in the world of communications. However, before then he was a political science student studying propaganda and public policy making. He completed his studying at the University of Chicago under Charles Merriam, Professor of political science. He graduated from University of Chicago in 1922 and received his PH.D in 1926. He completed his graduate studies from university of London, Paris, Berlin and Geneva. It was during his graduate studies he argued that the audience did not fully understand messages and did not make the most informed choices in the political sphere. He explored propaganda through his doctoral dissertation "Propaganda Technique In the World War " (1927) which has become a part of communication theory. [30]

He was a professor at Yale teaching law and political science from 1946 to 1970 as well at University of Chicago from 1922 to 1938. It was during his time at Yale, he developed the Laswell model of communication.

He is considered to be one of the primary founders of communication theories, he has written 4 million to 6 million words in academic lifetime. [31] He helped communications become a respected and legitimate study. [32]

Harold Lasswell is known for the Lasswell Model of communication, it is now used as an umbrella term for other models of communication due to its simplicities to allow for multiple and very different interpretations to theorize with. It was published in "The Structure and Function of Communication in Society" essay in 1948. Lasswell was thinking about mass media and the role radio played in the 1930s. It was extremely popular after the second world war. [30]

The Lasswell model is broken into five parts-the five W's, it focuses on the "who", "what", "whom", "which Channel" and "what effect". Lasswell brings up that there is three functions of communication, there is surveillance of the environment, correlation of components of society and cultural transmission between generation. [33]

Who, Communication is not only one person, it is newspapers, websites, television stations and radio stations. This communication is developed by people who run this organized institutions, reporters, editors etc.

Says What, refers to analyzing and identifying the content that was given.

To Whom, who is the audience and how does the audience receive this information,

Which Channel, refers to the media and how it is going to analyzed. The interactivity of Media

What effect, refers to what is taken from this piece of information

There are advantages as well as some critiques mentioned about the Lasswell Model. Some of the advantages are that the concept is easy and simple, it suits most types of communication and its the main concept of effect.

Some scholars believe that the Lasswell model of communication is no longer relevant, although at the time it was extremely significant. The critiques that have been brought up for the Lasswell model is the concept of feedback not mention, and the concept of noise is not mentioned. It was there where other theories started to come out to make up for the Lasswells method not having these factors in it, specially the Shannon and Weaver model. Another critique was that the Lasswell model is a linear model, it goes against other types of communications that show that it is more of a back and forth experience. It also does not mention power in the communication process. [34] Power was highlighted specially in Sturat Halls methods and concepts. Hall took parts from the Lasswell method and started reworking it to fit the idea of power in media, who has power and what message are they putting out. Hall examines how we view organizations and mass media and how they enforce certain meanings to appease their agenda.

Shannon and Weaver Model

Shannon and Weaver Model of Communication Communication shannon-weaver2.svg
Shannon and Weaver Model of Communication
Communication major dimensions scheme Communication emisor.jpg
Communication major dimensions scheme
Interactional Model of Communication Interaction comm model.svg
Interactional Model of Communication
Berlo's Sender-Message-Channel-Receiver Model of Communication Smcr.jpg
Berlo's Sender-Message-Channel-Receiver Model of Communication
Transactional model of communication Transactional comm model.jpg
Transactional model of communication
Communication code scheme Encoding communication.jpg
Communication code scheme
Linear Communication Model Linear comm model.svg
Linear Communication Model

The first major model for communication was introduced by Claude Shannon and Warren Weaver for Bell Laboratories in 1949 [35] The original model was designed to mirror the functioning of radio and telephone technologies. Their initial model consisted of three primary parts: sender, channel, and receiver. The sender was the part of a telephone a person spoke into, the channel was the telephone itself, and the receiver was the part of the phone where one could hear the other person. Shannon and Weaver also recognized that often there is static that interferes with one listening to a telephone conversation, which they deemed noise.

In a simple model, often referred to as the transmission model or standard view of communication, information or content (e.g. a message in natural language) is sent in some form (as spoken language) from an emitter (emisor in the picture)/sender/encoder to a destination/receiver/decoder. This common conception of communication simply views communication as a means of sending and receiving information. The strengths of this model are simplicity, generality, and quantifiability. Claude Shannon and Warren Weaver structured this model based on the following elements:

  1. An information source, which produces a message.
  2. A transmitter, which encodes the message into signals.
  3. A channel, to which signals are adapted for transmission.
  4. A noise source, which distorts the signal while it propagates through the channel.
  5. A receiver, which 'decodes' (reconstructs) the message from the signal.
  6. A destination, where the message arrives.

Shannon and Weaver argued that there were three levels of problems for communication within this theory.

The technical problem: how accurately can the message be transmitted?
The semantic problem: how precisely is the meaning conveyed?
The effectiveness problem: how effectively does the received meaning affect behavior?

Daniel Chandler [36] critiques the transmission model by stating:

It assumes communicators are isolated individuals.
No allowance for differing purposes.
No allowance for differing interpretations.
No allowance for unequal power relations.
No allowance for situational contexts.

In 1960, David Berlo expanded on Shannon and Weaver's (1949) linear model of communication and created the SMCR Model of Communication. [37] The Sender-Message-Channel-Receiver Model of communication separated the model into clear parts and has been expanded upon by other scholars.

Communication is usually described along a few major dimensions: message (what type of things are communicated), source/emisor/sender/encoder (from whom), form (in which form), channel (through which medium), destination/receiver/target/decoder (to whom). Wilbur Schram (1954) also indicated that we should also examine the impact that a message has (both desired and undesired) on the target of the message. [38] Between parties, communication includes acts that confer knowledge and experiences, give advice and commands, and ask questions. These acts may take many forms, in one of the various manners of communication. The form depends on the abilities of the group communicating. Together, communication content and form make messages that are sent towards a destination. The target can be oneself, another person or being, another entity (such as a corporation or group of beings).

Communication can be seen as processes of information transmission with three levels of semiotic rules:

  1. Pragmatic (concerned with the relations between signs/expressions and their users).
  2. Semantic (study of relationships between signs and symbols and what they represent).
  3. Syntactic (formal properties of signs and symbols).

Therefore, communication is social interaction where at least two interacting agents share a common set of signs and a common set of semiotic rules. This commonly held rule in some sense ignores autocommunication, including intrapersonal communication via diaries or self-talk, both secondary phenomena that followed the primary acquisition of communicative competences within social interactions.

In light of these weaknesses, Barnlund (2008) proposed a transactional model of communication. [39] The basic premise of the transactional model of communication is that individuals are simultaneously engaging in the sending and receiving of messages.

In a slightly more complex form a sender and a receiver are linked reciprocally. This second attitude of communication, referred to as the constitutive model or constructionist view, focuses on how an individual communicates as the determining factor of the way the message will be interpreted. Communication is viewed as a conduit; a passage in which information travels from one individual to another and this information becomes separate from the communication itself. A particular instance of communication is called a speech act. The sender's personal filters and the receiver's personal filters may vary depending upon different regional traditions, cultures, or gender; which may alter the intended meaning of message contents. In the presence of "communication noise" on the transmission channel (air, in this case), reception and decoding of content may be faulty, and thus the speech act may not achieve the desired effect. One problem with this encode-transmit-receive-decode model is that the processes of encoding and decoding imply that the sender and receiver each possess something that functions as a codebook, and that these two code books are, at the very least, similar if not identical. Although something like code books is implied by the model, they are nowhere represented in the model, which creates many conceptual difficulties.

Theories of coregulation describe communication as a creative and dynamic continuous process, rather than a discrete exchange of information. Canadian media scholar Harold Innis had the theory that people use different types of media to communicate and which one they choose to use will offer different possibilities for the shape and durability of society. [40] [ page needed ] His famous example of this is using ancient Egypt and looking at the ways they built themselves out of media with very different properties stone and papyrus. Papyrus is what he called 'Space Binding'. it made possible the transmission of written orders across space, empires and enables the waging of distant military campaigns and colonial administration. The other is stone and 'Time Binding', through the construction of temples and the pyramids can sustain their authority generation to generation, through this media they can change and shape communication in their society. [40] [ page needed ]

As academic discipline with distinct fields of study

The academic discipline that deals with processes of human communication is communication studies. The discipline encompasses a range of topics, from face-to-face conversation to mass media outlets such as television broadcasting. Communication studies also examines how messages are interpreted through the political, cultural, economic, semiotic, hermeneutic, and social dimensions of their contexts. Statistics, as a quantitative approach to communication science, has also been incorporated into research on communication science in order to help substantiate claims. [41]

Organizational communication

Business communication is used for a wide variety of activities including, but not limited to: strategic communications planning, media relations, internal communications, public relations (which can include social media, broadcast and written communications, and more), brand management, reputation management, speech-writing, customer-client relations, and internal/employee communications.

Companies with limited resources may choose to engage in only a few of these activities, while larger organizations may employ a full spectrum of communications. Since it is relatively difficult to develop such a broad range of skills, communications professionals often specialize in one or two of these areas but usually have at least a working knowledge of most of them. By far, the most important qualifications communications professionals must possess are excellent writing ability, good 'people' skills, and the capacity to think critically and strategically.

Business communication could also refer to the style of communication within a given corporate entity (i.e. email conversation styles, or internal communication styles).

The Classical Approach:

The classical approach comes from the management theory by Frederick Taylor who was the founder of the scientific management theory as well. [42] The main idea of the classical approach of organizational communication is that the theory compares organizations to a machine. The theory observed and analyze that workers perform the task they are given to in order to contribute to the overall well-being of the organization. Each member has their purpose in the group, just like a part of a machine works does its tasks while cooperate with other parts to have a well-managed, functioning machine. Additionally, just like a machine that collapse when one part fails to function. An organization will fall apart when members are not doing their designated task appropriately. [43]

The Human Relation Approach:

The human relation approach is based from several different theorists such as: Elton Mayo, McGregors's Douglas, Abraham Maslow, Mary Parker Follett's and Argyris. [42] The main idea of the human relation approach of organizational communication is that the theory compares organizations to a family. As this theory compares organization to a family, it focuses on workers satisfaction and the relationship within the organizations more compared to the work performance element. [44] The human relation approach emphasizes the importance of employee attitudes, and encourage organizations management team to focus on interpersonal relationships, group dynamics, and leadership styles in achieving organizational effectiveness. [45]

Political communication

Communication is one of the most relevant tools in political strategies, including persuasion and propaganda. In mass media research and online media research, the effort of the strategist is that of getting a precise decoding, avoiding "message reactance", that is, message refusal. The reaction to a message is referred also in terms of approach to a message, as follows:

Holistic approaches are used by communication campaign leaders and communication strategists in order to examine all the options, "actors" and channels that can generate change in the semiotic landscape, that is, change in perceptions, change in credibility, change in the "memetic background", change in the image of movements, of candidates, players and managers as perceived by key influencers that can have a role in generating the desired "end-state".

The modern political communication field is highly influenced by the framework and practices of "information operations" doctrines that derive their nature from strategic and military studies. According to this view, what is really relevant is the concept of acting on the Information Environment. The information environment is the aggregate of individuals, organizations, and systems that collect, process, disseminate, or act on information. This environment consists of three interrelated dimensions, which continuously interact with individuals, organizations, and systems. These dimensions are known as physical, informational, and cognitive. [47]

Interpersonal communication

In simple terms, interpersonal communication is the communication between one person and another (or others). It is often referred to as face-to-face communication between two (or more) people. Both verbal and nonverbal communication, or body language, play a part in how one person understands another, and attribute to one's own soft skills. In verbal interpersonal communication there are two types of messages being sent: a content message and a relational message. Content messages are messages about the topic at hand and relational messages are messages about the relationship itself. [48] This means that relational messages come across in how one says something and it demonstrates a person's feelings, whether positive or negative, towards the individual they are talking to, indicating not only how they feel about the topic at hand, but also how they feel about their relationship with the other individual. [48]

There are many different aspects of interpersonal communication including:

Family communication

Family communication is the study of the communication perspective in a broadly defined family, with intimacy and trusting relationship. [57] The main goal of family communication is to understand the interactions of family and the pattern of behaviors of family members in different circumstances. Open and honest communication creates an atmosphere that allows family members to express their differences as well as love and admiration for one another. It also helps to understand the feelings of one another.

Family communication study looks at topics such as family rules, family roles or family dialectics and how those factors could affect the communication between family members. Researchers develop theories to understand communication behaviors. Family communication study also digs deep into certain time periods of family life such as marriage, parenthood or divorce and how communication stands in those situations. It is important for family members to understand communication as a trusted way which leads to a well constructed family.


According to scholar Anne Beaufort, communication is also interested in rhetoric as a method of investigating "oral and written communications, particularly with regard to the desired effect on an audience, and lately, with visual communications as well." [58]

Barriers to effectiveness

Barriers to effective communication can distort the message or intention of the message being conveyed. This may result in failure of the communication process or cause an effect that is undesirable. These include filtering, selective perception, information overload, emotions, language, silence, communication apprehension, gender differences and political correctness. [59]

This also includes a lack of expressing "knowledge-appropriate" communication, which occurs when a person uses ambiguous or complex legal words, medical jargon, or descriptions of a situation or environment that is not understood by the recipient.


In any communication model, noise is interference with the decoding of messages sent over the channel by an encoder. There are many examples of noise:

To face communication noise, redundancy and acknowledgement must often be used. Acknowledgements are messages from the addressee informing the originator that his/her communication has been received and is understood. [65] Message repetition and feedback about message received are necessary in the presence of noise to reduce the probability of misunderstanding. The act of disambiguation regards the attempt of reducing noise and wrong interpretations, when the semantic value or meaning of a sign can be subject to noise, or in presence of multiple meanings, which makes the sense-making difficult. Disambiguation attempts to decrease the likelihood of misunderstanding. This is also a fundamental skill in communication processes activated by counselors, psychotherapists, interpreters, and in coaching sessions based on colloquium. In Information Technology, the disambiguation process and the automatic disambiguation of meanings of words and sentences has also been an interest and concern since the earliest days of computer treatment of language. [66]

Cultural aspects

Cultural differences exist within countries (tribal/regional differences, dialects and so on), between religious groups and in organisations or at an organisational level – where companies, teams and units may have different expectations, norms and idiolects. Families and family groups may also experience the effect of cultural barriers to communication within and between different family members or groups. For example: words, colours and symbols have different meanings in different cultures. In most parts of the world, nodding your head means agreement, shaking your head means "no", but this is not true everywhere. [67]

Communication to a great extent is influenced by culture and cultural variables. [68] [69] [70] [71] Understanding cultural aspects of communication refers to having knowledge of different cultures in order to communicate effectively with cross culture people. Cultural aspects of communication are of great relevance in today's world which is now a global village, thanks to globalisation. Cultural aspects of communication are the cultural differences which influence communication across borders.

  1. Verbal communication refers to a form of communication which uses spoken and written words for expressing and transferring views and ideas. Language is the most important tool of verbal communication. Countries have different languages. A knowledge of languages of different countries can improve cross-cultural understanding.
  2. Non-verbal communication is a very wide concept and it includes all the other forms of communication which do not use written or spoken words. Non verbal communication takes the following forms:
    • Paralinguistics are the elements other than language where the voice is involved in communication and includes tones, pitch, vocal cues etc. It also includes sounds from throat and all these are greatly influenced by cultural differences across borders.
    • Proxemics deals with the concept of the space element in communication. Proxemics explains four zones of spaces, namely intimate, personal, social and public. This concept differs from culture to culture as the permissible space varies in different countries.
    • Artifactics studies the non verbal signals or communication which emerges from personal accessories such as the dress or fashion accessories worn and it varies with culture as people of different countries follow different dress codes.
    • Chronemics deals with the time aspects of communication and also includes the importance given to time. Some issues explaining this concept are pauses, silences and response lag during an interaction. This aspect of communication is also influenced by cultural differences as it is well known that there is a great difference in the value given by different cultures to time.
    • Kinesics mainly deals with body language such as postures, gestures, head nods, leg movements, etc. In different countries, the same gestures and postures are used to convey different messages. Sometimes even a particular kinesic indicating something good in a country may have a negative meaning in another culture.

So in order to have an effective communication across the world it is desirable to have a knowledge of cultural variables effecting communication.

According to Michael Walsh and Ghil'ad Zuckermann, Western conversational interaction is typically "dyadic", between two particular people, where eye contact is important and the speaker controls the interaction; and "contained" in a relatively short, defined time frame. However, traditional Aboriginal conversational interaction is "communal", broadcast to many people, eye contact is not important, the listener controls the interaction; and "continuous", spread over a longer, indefinite time frame. [72] [73]


Every information exchange between living organisms — i.e. transmission of signals that involve a living sender and receiver can be considered a form of communication; and even primitive creatures such as corals are competent to communicate. Nonhuman communication also include cell signaling, cellular communication, and chemical transmissions between primitive organisms like bacteria and within the plant and fungal kingdoms.


The broad field of animal communication encompasses most of the issues in ethology. Animal communication can be defined as any behavior of one animal that affects the current or future behavior of another animal. The study of animal communication, called zoo semiotics (distinguishable from anthroposemiotics, the study of human communication) has played an important part in the development of ethology, sociobiology, and the study of animal cognition. Animal communication, and indeed the understanding of the animal world in general, is a rapidly growing field, and even in the 21st century so far, a great share of prior understanding related to diverse fields such as personal symbolic name use, animal emotions, animal culture and learning, and even sexual conduct, long thought to be well understood, has been revolutionized.

Plants and fungi

Communication is observed within the plant organism, i.e. within plant cells and between plant cells, between plants of the same or related species, and between plants and non-plant organisms, especially in the root zone. Plant roots communicate with rhizome bacteria, fungi, and insects within the soil. Recent research has shown that most of the microorganism plant communication processes are neuron-like. [74] Plants also communicate via volatiles when exposed to herbivory attack behavior, thus warning neighboring plants. [75] In parallel they produce other volatiles to attract parasites which attack these herbivores.

Fungi communicate to coordinate and organize their growth and development such as the formation of mycelia and fruiting bodies. Fungi communicate with their own and related species as well as with non fungal organisms in a great variety of symbiotic interactions, especially with bacteria, unicellular eukaryote, plants and insects through biochemicals of biotic origin. The biochemicals trigger the fungal organism to react in a specific manner, while if the same chemical molecules are not part of biotic messages, they do not trigger the fungal organism to react. This implies that fungal organisms can differentiate between molecules taking part in biotic messages and similar molecules being irrelevant in the situation. So far five different primary signalling molecules are known to coordinate different behavioral patterns such as filamentation, mating, growth, and pathogenicity. Behavioral coordination and production of signaling substances is achieved through interpretation processes that enables the organism to differ between self or non-self, a biotic indicator, biotic message from similar, related, or non-related species, and even filter out "noise", i.e. similar molecules without biotic content.

Pheromones are molecules released by one organism into the external environment to influence other individuals of the same species. Thus pheromone release is a form of communication. Pheromones promote sexual interaction (mating) in several fungal species. These include the aquatic fungus Allomyces macrogynus , the Mucorales fungus Mucor mucedo , Neurospora crassa and the yeasts Saccharomyces cerevisiae , Schizosaccharomyces pombe and Rhodosporidium toruloides . [76] [77] [78]

Bacteria quorum sensing

Communication is not a tool used only by humans, plants and animals, but it is also used by microorganisms like bacteria. The process is called quorum sensing. Through quorum sensing, bacteria can sense the density of cells, and regulate gene expression accordingly. This can be seen in both gram positive and gram negative bacteria. This was first observed by Fuqua et al. in marine microorganisms like V. harveyi and V. fischeri . [79]

Natural bacterial transformation involves the transfer of naked DNA from one bacterium to another through the surrounding medium, and can be regarded as a relatively simple form of sexual interaction. In several bacterial species transformation is promoted by the production of an extracellular factor, termed a competence factor, that when released into the surrounding medium induces a state of competence in neighboring cells. The state of competence is the ability to take up the DNA released by another cell. Bacterial competence factors are similar to pheromones in multicellular organisms. Competence factors have been studied in Bacillus subtilis [80] and Streptococcus pneumoniae . [81]

The History of Communication

Some of the oldest forms of human communication began as making sounds, dancing, acting, drawing or using symbols. Making sounds such as "Grunting or guttural sounds at a low pitch or high pitch would indicate either social communication or be a warning sign." Body language was also used as communication at this time. (SaHistory). [82]

Communication between humans began as language, symbols, songs, art, and dance. During this time cave drawings and murals that people painted on the walls told the story of their culture. "They would tell stories of battles, hunts and culture" [82]

See also

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Human communication, or anthroposemiotics, is a field of study dedicated to understanding how humans communicate. Humans ability to communicate with one another would not be possible without an understanding of what we are referencing or thinking about. Because humans are unable to fully understand one another's perspective, there needs to be a creation of commonality through a shared mindset or viewpoint. The field of communication is very diverse, as there are multiple layers of what communication is and how we use its different features as human beings.

Within the realm of communication studies, organizational communication is a field of study surrounding all areas of communication and information flow that contribute to the functioning of an organization. Organizational communication is constantly evolving and as a result, the scope of organizations included in this field of research have also shifted over time. Now both traditionally profitable companies, as well as NGO's and non-for-profit organizations, are points of interest for scholars focused on the field of organizational communication. Organizations are formed and sustained through continuous communication between members of the organization and both internal and external sub-groups who possess shared objectives for the organization. The flow of communication encompasses internal and external stakeholders and can be formal or informal.

Symbolic communication is the exchange of messages that change a priori expectation of events. Examples of this are modern communication technology and the exchange of information amongst animals. By referring to objects and ideas not present at the time of communication, a world of possibility is opened. In humans, this process has been compounded to result in the current state of modernity. A symbol is anything one says or does to describe something, and that something can have an array of many meanings. Once the symbols are learned by a particular group, that symbol stays intact with the object. Symbolic communication includes gestures, body language and facial expressions, as well as vocal moans that can indicate what an individual wants without having to speak. Research argues that about 55% of all communication stems from nonverbal language. Symbolic communication ranges from sign language to braille to tactile communication skills.

Communications management is the systematic planning, implementing, monitoring, and revision of all the channels of communication within an organization and between organizations; it also includes the organization and dissemination of new communication directives connected with an organization, network, or communications technology. Aspects of communications management include developing corporate communication strategies, designing internal and external communications directives, and managing the flow of information, including online communication. It is a mere process that helps an organization to be systematic as one within the bounds of communication.

<span class="mw-page-title-main">Nonverbal communication</span> Interpersonal communication through wordless (mostly visual) cues

Nonverbal communication (NVC) is the transmission of messages or signals through a nonverbal platform such as eye contact, facial expressions, gestures, posture, and body language. It includes the use of social cues, kinesics, distance (proxemics) and physical environments/appearance, of voice (paralanguage) and of touch (haptics). It can also include the use of time (chronemics) and eye contact and the actions of looking while talking and listening, frequency of glances, patterns of fixation, pupil dilation, and blink rate (oculesics).

Intercultural communication is a discipline that studies communication across different cultures and social groups, or how culture affects communication. It describes the wide range of communication processes and problems that naturally appear within an organization or social context made up of individuals from different religious, social, ethnic, and educational backgrounds. In this sense, it seeks to understand how people from different countries and cultures act, communicate, and perceive the world around them. Intercultural communication focuses on the recognition and respect of those with cultural differences. The goal is mutual adaptation between two or more distinct cultures which leads to biculturalism/multiculturalism rather than complete assimilation. It promotes the development of cultural sensitivity and allows for empathic understanding across different cultures.

Marketing Communications refers to the use of different marketing channels and tools in combination. Marketing communication channels focus on how businesses communicate a message to its desired market, or the market in general. It is also in charge of the internal communications of the organization. Marketing communication tools include advertising, personal selling, direct marketing, sponsorship, communication, public relations, social media, customer journey and promotion.

<span class="mw-page-title-main">Paul Watzlawick</span> Austrian-American psychologist and philosopher

Paul Watzlawick was an Austrian-American family therapist, psychologist, communication theorist, and philosopher. A theoretician in communication theory and radical constructivism, he commented in the fields of family therapy and general psychotherapy. Watzlawick believed that people create their own suffering in the very act of trying to fix their emotional problems. He was one of the most influential figures at the Mental Research Institute and lived and worked in Palo Alto, California.

Albert Mehrabian was born in 1939 to an Armenian family living in Iran. He is Professor Emeritus of Psychology at the University of California, Los Angeles. Although he originally trained as an engineer, he is best known for his publications on the relative importance of verbal and nonverbal messages. He also constructed a number of psychological measures including the Arousal Seeking Tendency Scale.

Interpersonal deception theory (IDT) is one of a number of theories that attempts to explain how individuals handle actual deception at the conscious or subconscious level while engaged in face-to-face communication. The theory was put forth by David Buller and Judee Burgoon in 1996 to explore this idea that deception is an engaging process between receiver and deceiver. IDT assumes that communication is not static; it is influenced by personal goals and the meaning of the interaction as it unfolds. The sender's overt communications are affected by the overt and covert communications of the receiver, and vice versa. IDT explores the interrelation between the sender's communicative meaning and the receiver's thoughts and behavior in deceptive exchanges.

<span class="mw-page-title-main">Social information processing (theory)</span>

Social information processing theory, also known as SIP, is an interpersonal communication theory and media studies theory developed in 1992 by Joseph Walther. Social information processing theory explains online interpersonal communication without nonverbal cues and how people develop and manage relationships in a computer-mediated environment. Walther argued that online interpersonal relationships may demonstrate the same or even greater relational dimensions and qualities (intimacy) as traditional FtF relationships. However, due to the limited channel and information, it may take longer to achieve than FtF relationships. These online relationships may help facilitate interactions that would not have occurred face-to-face due to factors such as geography and intergroup anxiety.

The hyperpersonal model is a model of interpersonal communication that suggests computer-mediated communication (CMC) can become hyperpersonal because it "exceeds [face-to-face] interaction", thus affording message senders a host of communicative advantages over traditional face-to-face (FtF) interaction. The hyperpersonal model demonstrates how individuals communicate uniquely, while representing themselves to others, how others interpret them, and how the interactions create a reciprocal spiral of FtF communication. Compared to ordinary FtF situations, a hyperpersonal message sender has a greater ability to strategically develop and edit self-presentation, enabling a selective and optimized presentation of one's self to others.

The following outline is provided as an overview of and topical guide to communication:

Judee K. Burgoon is a professor of communication, family studies and human development at the University of Arizona, where she serves as director of research for the Center for the Management of Information and site director for the NSF-sponsored Center for Identification Technology Research. She is also involved with different aspects of interpersonal and nonverbal communication, deception, and new communication technologies. She is also director of human communication research for the Center for the Management of Information and site director for Center for Identification Technology Research at the university, and recently held an appointment as distinguished visiting professor with the department of communication at the University of Oklahoma, and the Center for Applied Social Research at the University of Oklahoma. Burgoon has authored or edited 13 books and monographs and has published nearly 300 articles, chapters and reviews related to nonverbal and verbal communication, deception, and computer-mediated communication. Her research has garnered over $13 million in extramural funding from the National Science Foundation, the Department of Defense, the Department of Homeland Security, the Office of the Director of National Intelligence, Counterintelligence Field Activity, and the National Institutes of Mental Health. Among the communication theories with which she is most notably linked are: interpersonal adaptation theory, expectancy violations theory, and interpersonal deception theory. A recent survey identified her as the most prolific female scholar in communication in the 20th century.

In linguistics, the conduit metaphor is a dominant class of figurative expressions used when discussing communication itself (metalanguage). It operates whenever people speak or write as if they "insert" their mental contents into "containers" whose contents are then "extracted" by listeners and readers. Thus, language is viewed as a "conduit" conveying mental content between people.

<span class="mw-page-title-main">Interpersonal communication</span> Exchange of information between two or more people who are interdependent

Interpersonal communication is an exchange of information between two or more people. It is also an area of research that seeks to understand how humans use verbal and nonverbal cues to accomplish a number of personal and relational goals.

<span class="mw-page-title-main">Models of communication</span> Conceptual model used to explain the human communication process

Models of communication are conceptual models used to explain the human communication process. The first major model for communication was developed in 1948 by Claude Shannon and published with an introduction by Warren Weaver for Bell Laboratories. It is also important to note Lasswell's model of communication, which was also developed in 1948 by Harold Lasswell. Following the basic concept, communication is the process of sending and receiving messages or transferring information from one part (sender) to another (receiver).

Nonverbal influence is the act of affecting or inspiring change in others' behaviors and attitudes by way of tone of voice or body language and other cues like facial expression. This act of getting others to embrace or resist new attitudes can be achieved with or without the use of spoken language. It is a subtopic of nonverbal communication. Many individuals instinctively associate persuasion with verbal messages. Nonverbal influence emphasizes the persuasive power and influence of nonverbal communication. Nonverbal influence includes appeals to attraction, similarity and intimacy.

The sender-message-channel-receiver (SMCR) model of communication is an expansion of the Shannon-Weaver model of communication. David Berlo created this model, which separated Shannon and Weaver's linear model into clear parts, in 1960. It has been expanded upon by other scholars. Berlo described factors affecting the individual components in the communication making the communication more efficient.


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Further reading