Phonetics
(physical nature of speech)
Phonology
(use of sounds in language)
Morphology
(word formation)
Syntax
(sentence structure)
Semantics
(meaning of words & how they combine into sentences)
Pragmatics
(effect of situation on language use)
Or, carving it up another way:
Theoretical
linguistics (pure and simple: how languages work)
Historical
linguistics (how languages got to be the way they are)
Sociolinguistics
(language and the structure of society)
Psycholinguistics
(how language is implemented in the brain)
Applied
linguistics (teaching, translation, etc.)
Computational
linguistics (computer processing of human language)
The second list -- theoretical, historical, socio- etc. -- tells us about possible connections between linguistics and external topics. Each of this second set of linguistic subdisciplines can in principle deal with any of the six levels of description in the first set. Thus sociolinguists study the social dimensions of pronunciation (phonetics or phonology), word and sentence structure (morphology and syntax), conversational styles (pragmatics), and so on. Psycholinguists have studied perception, production and learning of a similar range of topics. The list of topics related to language or language use is open-ended, and so the second list could be extended almost indefinitely.
Theoretical linguistics is distinguished by focusing not on any external topics, but rather on the nature of the linguistic system in and of itself. Linguistic theory again can deal with any of the six levels of description.
Follow this link for examples of the distinctions among levels of description.
Follow this one for examples of different connections to external topics.
Other phenomena come to be called "language" because of
more or less close connections or analogies to this central case: writing,
sign languages, computer languages, the language of dolphins or bees.
The ordinary-language meaning of the word reflects this process
of extension from a speech-related core . The etymology of the word, from
Fr. langue "tongue," makes the same point.
From the American Heritage Dictionary:
[lan-guage] (NOUN).
1. a. The use by human beings of voice sounds, and
often of written symbols that represent these sounds, in organized combinations
and patterns to express and communicate thoughts and feelings.
1. b. A system of words formed from such combinations
and patterns, used by the people of a particular country or by a group
of people with a shared history or set of traditions.
2. A nonverbal method of communicating ideas, as
by a system of signs, symbols, or gestures: ``the language of algebra.''
3. Body language.
4. The special vocabulary and usages of a scientific,
professional, or other group.
5. A characteristic style of speech or writing:
``ribald language.''
6. a. Abusive, violent, or profane utterance: ``language
that would make your hair curl (W.S. Gilbert).''
6. b. A particular manner of utterance: ``gentle
language.''
7. The manner or means of communication between
living creatures other than humans: ``the language of dolphins.''
8. Language as a subject of study.
9. The wording of a legal document or statute as
distinct from the spirit.
10. Computer Science. Machine language.
Note that the phenomena named by the extended senses are quite different from one another. Writing is a system of transcription for speech. Deaf sign languages are an expression in a different medium of the same underlying human capabilities and needs as spoken language. Computer languages are artificial systems with some formal analogies (of debatable significance) to the systems underlying human speech.
Some linguists think that the boundary between the patterns of spoken language and other modes of communication is not a sharp one, or even that it is entirely artificial. For them, the extended senses of the word "language" belong to the same subject matter as the core sense. A larger proportion of poets, philosophers and religious thinkers agree with them, often going on to view language as magically connected to the world it describes.
The core of the field of linguistics has always been the
analysis of linguistic structure, and this course will introduce the basic
concepts of this disciplinary core. However, there's a lot of intellectual,
practical and human interest in other aspects of the study of language,
and we'll survey these as well. [next]
Some of these connections are made within linguistics itself. For instance, the Penn linguistics department includes specialists in sociolingustics, psycholinguistics, historical linguistics and computational linguistics. In other cases, the work may be carried out within another field, or at least another department -- neurology, psychology, computer science, philosophy, history -- perhaps in consultation with a card-carrying linguist.
We could continue the list of connections almost indefinitely, and could also expand each item at length. During the course, we'll point out numerous connections of this kind.
We will give only a few illustrative examples here.
Semiotics is the study of signs and signalling systems. It was developed around the turn of the 20th century by the philosopher C.S. Peirce, the linguist Ferdinand de Saussure and others. It provides a general framework for thinking about meaning and communication, and many technical terms for expressing such thoughts. As a result, semiotic concepts and terminology are used in fields as diverse as anthropology, computer science and the history of art.
One example of useful semiotic terminology is the opposition among syntax (the relations among signs in combination), semantics (the relations between signs and the things they refer to), and pragmatics (the relations between signs and their users or circumstances of use).
Another example is the provided by the categories of index
(a sign that alludes to what it signifies through some sort of causal
link), icon (a sign that ressembles what it signifies) and
symbol (a sign connected to what it signifies by arbitrary convention).
The concepts and techniques of formal
language theory were originally developed by Noam
Chomsky in the 1950s, while he was a graduate student in linguistics
at Penn, in order to reason about the problems involved in (natural) language
learning. This field has since become part of the standard curriculum in
computer science, where it is applied to the design and analysis of computer
languages.
The mathematical technique of linear
prediction analysis is used by phoneticians to estimate the resonant
frequencies of the vocal tract during vowels. The basic technique was developed
by Norbert
Wiener during WW II in order to improve anti-aircraft aiming systems,
and has been applied to many problems involving stable control of feedback
systems and extraction of signals from noisy channels.
[next].
Some questions are entirely political: should governments try to accommodate speakers of minority languages? how important is it to maintain rigorous standards of usage? is it bad to borrow words from another languages rather than inventing native ones?
Other questions are factual, though they have immediate practical consequences: does bilingual education work? what are the consequences of oral education for deaf children? to what extent can ordinary citizens understand legal contracts? how well do computer speech recognition systems work?
A third set of questions are mainly interesting to those
who care about language itself:
are Korean and Japanese derived from the same historical
source? how much of linguistic structure is innate, and how much emerges
from the experience of communication? why will most English speakers delete
"that" in "this is the book [that] Kim told me about," but not in
"this is the book [that] impressed Kim so much"?
Reasonable and informed people can and do disagree about
these and innumerable other linguistic issues. Particular arguments may
be illogical, or particular claims may be false, as in any debate, but
our state of knowledge leaves room for a range of opinions.
[next]
On the other hand, there are
some disagreements about language where one side is just wrong, as wrong
as those who believe that the
earth is flat or that it was created out of nothing in 4004
BC .
In some cases, the "flat earth" position is only held by exceptionally ignorant people, and gives rise to jokes with punch lines like "if English was good enough for Jesus, it's good enough for me." However, there are plenty of misconceptions about language among otherwise reasonable people, not to mention French literary theorists or popular pundits. These are worth calling myths.
Here are some examples of linguistic myths from the sci.lang FAQ.
A couple of other examples:
Myth: speech and writing are parallel forms of
linguistic expression, different but equally fundamental types of text.
Fact: Speech is primary, writing is secondary
and is always derivative of speech.
Myth: non-standard dialects are degraded and errorful
versions of standard languages.
Fact: standard languages are either an arbitrary
choice among a range of geographical and social dialects, or an artificial
construct combining aspects of several dialect sources. Ways of speaking
that happen not to be "standardized" in this way have their own history,
at least equally valid even if lacking in prestige.
Myth: Primitive cultures have primitive languages,
at a lower level of development and less well able to express a wide range
of ideas.
Fact: There are no primitive languages; there
are no demonstrated differences in fundamental communicative efficacy among
languages.
[on to the next lecture]
Yes, Jacques Derrida really believes that writing both "precedes and follows speech, it comprehends it," and that "there is no linguistic sign before writing," because "a certain model of writing was necessarily but provisionally imposed ... as instrument and technique of representation of a system of language. And ... this movement, unique in style, was so profound that it permitted the thinking, within language, of concepts like those of the sign, technique, representation, language."
This leads him to conclude that