Senin, 24 Oktober 2011

Animal communication

Main article: Animal language
Figure-Eight-Shaped Waggle Dance of the Honeybee (Apis mellifera) indicating a food source to the right of the direction of the sun outside the hive. The abdomen of the dancer appears blurred because of the rapid motion from side to side

The term "animal languages" is often used for non-human systems of communication. Linguists and semioticians do not consider these to be true "language", but describe them as animal communication on the basis on non-symbolic sign systems,[26] because the interaction between animals in such communication is fundamentally different in its underlying principles from human language. According to this approach, since animals aren't born with the ability to reason the term "culture", when applied to animal communities, is understood to refer to something qualitatively different than in human communities. Language, communication and culture are more complex amongst humans. A dog may successfully communicate an aggressive emotional state with a growl, which may or may not cause another dog to keep away or back off. Similarly, when a human screams in fear, it may or may not alert other humans of impending danger. Both of these examples communicate, but both are not what would generally be called language.

In several publicized instances, non-human animals have been taught to understand certain features of human language. Karl von Frisch received the Nobel Prize in 1973 for his proof of the sign communication and its variants of the bees.[27] Chimpanzees, gorillas, and orangutans have been taught hand signs based on American Sign Language. The African Grey Parrot, Alex, which possessed the ability to mimic human speech with a high degree of accuracy, is suspected of having had sufficient intelligence to comprehend some of the speech it mimicked. Though animals can be taught to understand parts of human language, they are unable to develop a language.

While proponents of animal communication systems have debated levels of semantics, these systems have not been found to have anything approaching human language syntax.[28]

Artificial languages

An artificial language is a language the phonology, grammar, and/or vocabulary of which have been consciously devised or modified by an individual or group, instead of having evolved naturally. There are many possible reasons to construct a language: to ease human communication (see international auxiliary language and code); to bring fiction or an associated constructed world to life; for linguistic experimentation; for artistic creation; and for language games.

The expression "planned language" is sometimes used to mean international auxiliary languages and other languages designed for actual use in human communication. Some prefer it to the term "artificial" which may have pejorative connotations in some languages. Outside the Esperanto community, the term language planning means the prescriptions given to a natural language to standardize it; in this regard, even "natural languages" may be artificial in some respects. Prescriptive grammars, which date to ancient times for classical languages such as Latin, Sanskrit, and Chinese are rule-based codifications of natural languages, such codifications being a middle ground between naive natural selection and development of language and its explicit construction.
The ASCII Table, a scheme for encoding character strings.

Mathematics, Logics and computer science use artificial entities called formal languages (including programming languages and markup languages, and some that are more theoretical in nature). These often take the form of character strings, produced by a combination of formal grammar and semantics of arbitrary complexity.

A programming language is a formal language endowed with semantics that can be utilized to control the behavior of a machine, particularly a computer, to perform specific tasks. Programming languages are defined using syntactic and semantic rules, to determine structure and meaning respectively.

Programming languages are employed to facilitate communication about the task of organizing and manipulating information, and to express algorithms precisely. Some authors[who?] restrict the term "programming language" to those languages that can express all possible algorithms; sometimes the term "computer language" is applied to artificial languages that are more limited.[citation needed]

Natural languages

Human languages are usually referred to as natural languages, and the science of studying them falls under the purview of linguistics. A common progression for natural languages is that they are considered to be first spoken and then written, and then an understanding and explanation of their grammar is attempted.

Languages live, die, polymorph, move from place to place, and change with time. Any language that ceases to change or develop is categorized as a dead language. Conversely, any language that is in a continuous state of change is known as a living language or modern language. It is for these reasons that the biggest challenge for a speaker of a foreign language is to remain immersed in that language in order to keep up with the changes of that language.

Making a principled distinction between one language and another is sometimes nearly impossible.[25] For instance, there are a few dialects of German similar to some dialects of Dutch. The transition between languages within the same language family is sometimes gradual (see dialect continuum).

Some like to make parallels with biology, where it is not possible to make a well-defined distinction between one species and the next. In either case, the ultimate difficulty may stem from the interactions between languages and populations. (See Dialect or August Schleicher for a longer discussion.)

The concepts of Ausbausprache, Abstandsprache and Dachsprache are used to make finer distinctions about the degrees of difference between languages or dialects.

A sign language (also signed language) is a language which, instead of acoustically conveyed sound patterns, uses visually transmitted sign patterns (manual communication, body language) to convey meaning—simultaneously combining hand shapes, orientation and movement of the hands, arms or body, and facial expressions to fluidly express a speaker's thoughts. Hundreds of sign languages are in use around the world and are at the cores of local Deaf cultures.

Origin

Theories about the origin of language can be divided according to their basic assumptions. Some theories are based on the idea that language is so complex that one can not imagine it simply appearing from nothing in its final form, but that it must have evolved from earlier pre-linguistic systems among our pre-human ancestors. These theories can be called continuity based theories. The opposite viewpoint is that language is such a unique human trait that it cannot be compared to anything found among non-humans and that it must therefore have appeared fairly suddenly in the transition from pre-hominids to early man. These theories can be defined as discontinuity based. Similarly some theories see language mostly as an innate faculty that is largely genetically encoded, while others see it as a system that is largely cultural, that is learned through social interaction.[21] Currently the only prominent proponent of a discontinuity theory of human language origins is Noam Chomsky. Chomsky proposes that 'some random mutation took place, maybe after some strange cosmic ray shower, and it reorganized the brain, implanting a language organ in an otherwise primate brain'. While cautioning against taking this story too literally, Chomsky insists that 'it may be closer to reality than many other fairy tales that are told about evolutionary processes, including language'.[22] Continuity based theories are currently held by a majority of scholars, but they vary in how they envision this development. Those who see language as being mostly innate, for example Steven Pinker, hold the precedents to be animal cognition, whereas those who see language as a socially learned tool of communication, such as Michael Tomasello see it as having developed from animal communication, either primate gestural or vocal communication. Other continuity based models see language as having developed from music.[23]

Because the emergence of language is located in the early prehistory of man, the relevant developments have left no direct historical traces and no comparable processes can be observed today. Theories that stress continuity often look at animals to see if, for example, primates display any traits that can be seen as analogous to what pre-human language must have been like. Alternatively early human fossils can be inspected to look for traces of physical adaptation to language use or for traces of pre-linguistic forms of symbolic behaviour.

It is mostly undisputed that pre-human australopithecines did not have communication systems significantly different from those found in great apes in general, but scholarly opinions vary as to the developments since the appearance of Homo some 2.5 million years ago. Some scholars assume the development of primitive language-like systems (proto-language) as early as Homo habilis, while others place the development of primitive symbolic communication only with Homo erectus (1.8 million years ago) or Homo heidelbergensis (0.6 million years ago) and the development of language proper with Homo sapiens sapiens less than 100,000 years ago.

Linguistic analysis, used by Johanna Nichols, a linguist at the University of California, Berkeley, to estimate the time required to achieve the current spread and diversity in modern languages today, indicates that vocal language arose at least 100,000 years ago.[24]

Language and culture

Languages, understood as the particular set of speech norms of a particular community, are also a part of the larger culture of the community that speak them. Humans use language as a way of signalling identity with one cultural group and difference from others. Even among speakers of one language several different ways of using the language exist, and each is used to signal affiliation with particular subgroups within a larger culture. Linguists and anthropologists, particularly sociolinguists, ethnolinguists and linguistic anthropologists have specialized in studying how ways of speaking vary between speech communities.

A community's ways of using language is a part of the community's culture, just as other shared practices are, it is way of displaying group identity. Ways of speaking function not only to facilitate communication, but also to identify the social position of the speaker. Linguists use the term varieties, a term that encompasses geographically or socioculturally defined dialects as well as the jargons or styles of subcultures, to refer to the different ways of speaking a language. Linguistic anthropologists and sociologists of language define communicative style as the ways that language is used and understood within a particular culture.[19]

Languages do not differ only in pronunciation, vocabulary or grammar, but also through having different "cultures of speaking". Some cultures for example have elaborate systems of "social deixis", systems of signalling social distance through linguistic means.[20] In English, social deixis is shown mostly though distinguishing between addressing some people by first name and others by surname, but also in titles such as "Mrs.", "boy", "Doctor" or "Your Honor", but in other languages such systems may be highly complex and codified in the entire grammar and vocabulary of the language. For instance, in several languages of east Asia, such as Thai, Burmese and Javanese, different words are used according to whether a speaker is addressing someone of higher or lower rank than oneself in a ranking system with animals and children ranking the lowest and gods and members of royalty as the highest.[20]

Syntax

Languages that use inflection to convey meaning often do not have strict rules for word order in a sentence. For example in Latin both Dominus servos vituperabat and Servos vituperabat dominus mean "the master was cursing the slaves", because servos "slaves" is in the accusative case showing that they are the grammatical object of the sentence and dominus "master" is in the nominative case showing that he is the subject. Other languages, however, use little or no inflectional processes and instead use the sequence of words in relation to each other to describe meaning. For example in English the two sentences "the slaves were cursing the master" and "the master was cursing the slaves" mean different things because the role of grammatical subject is encoded by the noun being in front of the verb and the role of object is encoded by the noun appearing after the verb.

Syntax then, has to do with the order of words in sentences, and specifically how complex sentences are structured by grouping words together in units, called phrases, that can occupy different places in a larger syntactic structure. Below is a graphic representation of the syntactic analysis of the sentence "the cat sat on the mat". The sentence is analysed as being constituted by a noun phrase, a verb and a prepositional phrase; the prepositional phrase is further divided into a preposition and a noun phrase; and the noun phrases consist of an article and a noun.

Morphology

Many languages use the morphological processes of inflection to modify or elaborate on the meaning of words. In some languages words are built of several meaningful units called morphemes, the English word "unexpected" can be analyzed as being composed of the three morphemes "un-", "expect" and "-ed". Morphemes can be classified according to whether they are roots to which other bound morphemes called affixes are added, and bound morphemes can be classified according to their position in relation to the root: prefixes precede the root, suffixes follow the root and infixes are inserted in the middle of a root. Affixes serve to modify or elaborate the meaning of the root. Some languages change the meaning of words by changing the phonological structure of a word, for example the English word "run" which in the past tense is "ran". Furthermore morphology distinguishes between processes of inflection which modifies or elaborates on a word, and derivation which instead creates a new word from an existing one - for example in English "sing" which can become "singer" by adding the derivational morpheme -er which derives an agentive noun from a verb. Languages differ widely in how much they rely on morphology - some languages, traditionally called polysynthetic languages, make extensive use of morphology, so that they express the equivalent of an entire English sentence in a single word. For example the Greenlandic word "oqaatiginerluppaa" "(he/she) speaks badly about him/her" which consists of the root oqaa and six suffixes.[18]