[其它课程]新编语言学教程chapter 9课件.ppt

Chapter 9 Psycholinguistics,What do these activities have in common?,What kind of process is involved in producing and understanding language?,Chapter 9 Psycholinguistics,Questions,What is psycholinguistics? What are the main topics of psycholinguistics?,Question 1,What is psycholinguistics?,9.1 Introduction,* Psycholinguistics is the study of the language processing mechanisms. Psycholinguistics deals with the mental processes a person uses in producing and understanding language. It is concerned with the relationship between language and the human mind, for example, how word, sentence, and discourse meaning are represented and computed in the mind.,9.1 Introduction,* As the name suggests, it is a subject which links psychology and linguistics. Psycholinguistics is interdisciplinary in nature and is studied by people in a variety of fields, such as psychology, cognitive science, and linguistics. It is an area of study which draws insights from linguistics and psychology and focuses upon the comprehension and production of language.,The scope of psycholinguistics The common aim of psycholinguists is to find out the structures and processes which underline a humans ability to speak and understand language. Psycholinguists are not necessarily interested in language interaction between people. They are trying above all to probe into what is happening within the individual.,The scope of psycholinguistics,At its heart, psycholinguistic work consists of two questions. What knowledge of language is needed for us to use language? What processes are involved in the use of language?,The “knowledge” question,Four broad areas of language knowledge: Semantics deals with the meanings of sentences and words. Syntax involves the grammatical arrangement of words within the sentence. Phonology concerns the system of sounds in a language. Pragmatics entails the social rules involved in language use. It is not ordinarily productive to ask people explicitly what they know about these aspects of language. We infer linguistic knowledge from observable behavior.,The “process” question, “ordinary use of language”: e.g. understanding a lecture, reading a book, writing a letter, and holding a conversation, etc. “cognitive processes”: processes like perception, memory and thinking. Although we do few things as often or as easily as speaking and listening, we will find that considerable cognitive processing is going on during those activities.,What cognitive processes are involved in the ordinary use of language?,Two possible directions of study in psycholinguistics,Language as a way of explaining psycholinguistic theories and processes: language influences memory, perception, attention and learning. The effects of psychological constraints on the use of language: how memory limitations affect language production and comprehension.,Question 2,What are the main topics of psycholinguistics?,Topics to be covered include,General issues of psycholinguistics: language acquisition (how human beings learn language) language production (how we create and express meaning through language) language comprehension (how we perceive and understand speech and written language) The relationship between language and thought,Psycholinguistics is interested in the acquisition of language: how children acquire their mother tongue. The study of the acquisition of language by children is often called developmental psycholinguistics.,9.2 Language Acquisition,9.2 Language Acquisition,The psycholinguist Steven Pinker makes a strong case for considering the elements of linguistic knowledge to be innate. This is consistent with the Chomskyan concept of universal grammar: the idea that there is a common underlying structure to every language, the knowledge of which we are born with.,Many linguists feel that if we can understand the internal mechanism which enables children to learn language so quickly we shall have penetrated one of the deepest secrets of the mind.,Language acquisition refers to the learning and development of a persons language. The learning of a native or first language is called first language acquisition, and the learning of a second or foreign language is called second language acquisition.,Overgeneralization/Overextension(the extension of a rule beyond its proper limits) Undergeneralization/Underextension(a child uses a word in a more limited way than adults do ),Two basic notions in first language acquisition,It is shown by psycholinguistics that childrens use of language is rule-governed. For example, children frequently say tooths and mouses, instead of teeth and mice, and holded, goed, runned and finded, instead of held, went, ran and found. Can you find more examples of overgeneralizations in your English acquisition?,Examples of overgeneralization,Overgeneralization is a frequent phenomenon in language development. It can be found not only in syntactic usage but also in word meanings. moons: all round objects cars: all vehicles dogs: all four-legged animals,Examples of overgeneralization,Most psycholinguists believe that the intonational, gestural, and contextual clues make it clear that children are using single-word sentences, exactly as adults often do in a conversation. Milk(Do you have any milk?/ Id like some milk.),Examples of overgeneralization,Children also undergeneralize. When a child uses a word in a more limited way than adults do (e.g. refusing to call a taxi a car), this phenomenon is called undergeneralization or underextension. Shoes only refers to his mothers shoes. Hat only refers to his own hat.,Undergeneralization,On some occasions, childrens conceptual categories may actually differ from those adults. On other occasions, they may know perfectly well that a cow is not a dog but not know what it is called. On still other occasions, the childs misuse of words may reflect an attempt at humor.,Reasons for overgeneralization and undergeneralization,Stages of first language acquisition,The prelinguistic stage牙牙學語期 The one-word stage 单词期 The two-word stage兩詞期 The multiword stage多語期,The prelinguistic stage牙牙學語期,By the age of six months when they are able to sit up, children are heard producing a number of different vowels and consonants. At the babbling（牙牙學語）stage, the sound and syllables that children utter are as yet meaningless.,The one-word stage,At some point in the late part of the first year or the early part of the second year. Childrens one-word utterances are also called holophrastic 全句字(以一個字表示整句的意思), because they can be used to express a concept or prediction that would be associated with an entire sentence in adult speech.,The two-word stage兩詞期,In general, the two-word stage begins roughly in the second half of the childs second year. Childrens two-word utterances can express a certain variety of grammatical relations indicated by word order, i.e. “Baby chair”.,The multiword stage多語期,Between two and three years old. When a child starts stringing more than two words together, the utterances may be two, three, four, or five word or longer, e.g. Cathy build house.,9.3 Language production,1.The definition of language production 2. Stages of language production,Language production,Language production refers to the cognitive processes that convert nonverbal communication intentions into verbal action. Language production involves two simultaneous processes 1) the thought process, which is global and holistic, involving a type of thinking in mentalese (心理语言 ) that is not yet speech. 2) the speech process, which is serial and linear assemblage of the units of language. (William James 1980),Language production,According to Levelt (莱维尔特) (1989), language production contains four stages: 1)conceptualizing 2)formulating 3)articulating 4)self-monitoring,First, we must conceptualize what we wish to communicate; Second, we formulate this thought into a linguistic plan; Third, we execute the plan through the muscles in the speech system; Finally, we monitor our speech, accessing whether it is what we intended to say and whether we said it the way we intended to.,Conceptualization,Where do ideas come from? In what form do ideas exist before they are put into words? These are difficult questions to answer, partly because we still dont know enough about how language is produced, partly because they deal with mental abstractions so vague that they elude empirical investigation. As to the second question, psycholinguists generally agree that some form of mentalese exists-a representation system which is different from language.,Conceptualizing,Conceptualzing involves conceiving of an intention, selecting the relevant information to be expressed for the realization of this purpose, ordering this information for expression, the sum total of these mental activities will be called conceptualizing. According to Levelt, conceptualizing is responsible for generating message.,Formulating,Formulation refers to converting the thought (which is conceptualized in the first stage) into linguistic plan, to generating a framework on which to hang the units of speech. Formulation is the second stage of speech production. This stage consists of three phases: identifying the meaning selecting a syntactic structure generating an intonation contour.,Three phases of formulating,1. identifying the meaning This framework begins with the thought you want to express and the searches for definition that best match the thought, like consulting a dictionary in reverse-defining the meaning and then finding the word to match it. words meaning,Three phases of formulating,2.selecting a syntactic structure This step involves finding the appropriate syntactic structure, three models could be used. 1) tree diagram 2) semantics-based framework 3) the connectionist model,2.selecting a syntactic structure,1)Similar to use tree diagrams to parse sentences with a phrase structure grammar, here we can use tree diagram to generate sentences, starting with a sentence-level representation (S), and flesh out the phrases (NP+VP), then the constituents within phrases (N, V, etc.) e.g. S NP VP det N V NP,2) Semantics-based framework: using not tree diagrams but cases, themes, or roles assigned to the main verbs and nouns in the sentence. We would find the appropriate nouns and verbs that describe the actions, actors and objects in the conceptualization. For instance, the word “stab” would activate agent, patient, and instrument roles.,2.selecting a syntactic structure,2. selecting a syntactic structure,3)The connectionist model: a sentence to be spoken would be represented by spreading activation through a network of nodes representing phonological, lexical, and morphological levels. Finding the syntactic frame could be using any of these three models.,Three phases of formulating,3 Generating an intonation contour 'kntu Whether you are going to ask a question or make a statement, and the constituents in the utterance that need to be emphasized or stressed have to be tagged at this point. Here is where we layout the stress pattern in the sentence to be produced. e.g. Mike like baby .(to emphasize object ) Mike like baby. (to emphasize subject ),Formulation,Speech errors are made by speakers unintentionally. In formulating speech, we are often influenced by the sound system of language. The scientific study of speech errors, commonly called slips of the tongue or tongue-slips, can provide useful clues to the processes of language production.,Table: major types of slips of the tongue,Articulation,Articulation of speech sounds is the third and a very important stages of production. Once we have organized our thoughts into a linguistic plan, this information must be sent from the brain to the muscles in the speech system so that they can then execute the required movements and produce the desired sounds. We depend on vocal organs to produce speech sounds so as to express ourselves. In the production of speech sounds, the lungs, larynx and lips may work at the same time and thus form co-articulation.,Self-regulation,Self-regulation is the last stage of speech production. To err is human. So each person would do some self-correction over and over again while conversing. According to some psycholinguists, errors are committed only by non-native speakers. Native speakers often make “mistakes” and correct themselves immediately. Native speakers often use different ways to edit their linguistic performance. Speech production or written production is not a one-way linear process; it is a parallel, two-way system involving production and self-regulation in the production.,9.4 Language Comprehension,Understanding language, like producing it, is such an automatic task that it seems to be a relatively straightforward process. What is apparent from the vast research into the comprehension of spoken and written language is that people do not process linguistic information in a neat, linear fashion; they do not move smoothly from one linguistic level to another. The research shows that in most situations, listeners and readers use a great deal of information other than the actual language being produced to help them find the meaning of the linguistic symbols they hear or see.,1 Sound Comprehension,Sound comprehension is not a passive process. It often depends on the context from which listeners expect to hear. People understand the meaning as a whole. They do not listen to each word individually. Distinguishing similar sounds, such as /b/ and /p/, /t/ and /d/ in English, is another type of sound comprehension. People often recognize the differences of sounds based on the length of producing time. In a word, the successful comprehension of speech sounds is a combination of the innate ability of humans to distinguish minute differences between speech sounds, and the ability to adjust to the acoustic categories of the language they are exposed to.,2 Word Comprehension,Word comprehension is a very complex psycholinguistic process and is much more complex than the processing of speech sounds. That is because there are mountains of words in the vocabulary which not only consist of sounds, but also convey meanings. Psycholinguists use parallel distributed processing (PDP) to explain the complex process of word understanding.,PDP is a model of cognition developed from neurology, computer science and psychology. It is a way in which people use several seperate and paralell processes at the same time to understand spoken or written language. For example, understanding a word involves: remember the word; search the meaning of the word; spell word pronounce the word,A PDP model of comprehension can be used to explain lexical access. In our mind we have stored many words, some of which are easily accessible, but some of which are not. As a rule, high-frequency words are rapidly and frequently activated, and low-frequency words