二语习得(L3)正模版ppt课件.ppt

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1、Lesson Three Interlanguage and the natural route of development,Tasks:1 writing a paper on the topic on the natural route of development of L2 2 writing a paper on the topic success analysis instead of error analysis 3 writing a paper on the topic An analysis of English fossilization of student at s

2、ome level,1.What are mentalist views of L1 acquisition?2.What are the assumptions underlying interlanguage theory?3.What are the principal processes operated in interlanguage?4.What is fossilization?Why?5.What are the essential Characteristics of Language-learner language?6.What are the differences

3、between Error analysis and Contrastive Analysis?7.What information about interlanguage does Error Analysis provide?8.What are the empirical evidences for the interlanguage hypothesis?9.What are the problems with the empirical researches?,Introduction,Background theory and research in L1 acquisition(

4、a fixed order are based on a theory of learning that stresses the learner-internal factors)The notion of interlanguage(theoretical construct used to identify the stages of development)natural route of development(The principal goal of this chapter)Discussion of the L2=L1 hypotesisCaveats(regarding t

5、he centrality of learner-internal processes in accounts of SLA),Mentalist accounts of first language acquisition,Chomsky LennebergMcNeill,Language acquisition device,Chomsky assumes that children are born with a language acquisition device(LAD).This LAD is made up of a set of general principles call

6、ed universal grammar.These general principles can be applied to all the languages in the world.,Definition of acquisition,Acquisition can be broadly defined as the internalization of rules and formulas which are then used to communicate in the L2.In this sense the term acquisition is synonymous with

7、 the term learning.However,Krashen(1981)uses these terms with different meaning.Acquisition for Krashen,consists of the spotaneous process of rule internalization that results from natural language use,while learning consists of the development of conscious L2 knowledge through formal study.,Acquisi

8、tion device,Nativist theories of language acquistion emphasize the importance of the innate capacity of the language learner at the expence of environmental factors.Each learner is credited with an acquisition device which directs the process of acquisition.This devece contains information about the

9、 possible form that the gramar of any language can take.,Chomsky,Chomskys(1959)stressed the active contribution of the child and minimized the importance of imitation and reinforcement.Chomsky claimed that the childs knowledge of his mother tongue was derived from a Universal Grammar which specified

10、 the essential form that any natural language could take.,This view of FLA was represented in the form of a model(e.g.Chomsky 1966):primary linguistic data AD G,Primary linguistic data served only as a trigger for activating the device.It did not shape the process of acquisition,which was solely the

11、 task of the AD.AD contained the UG to work and required the learner access to primary linguistic data.For Chomsky the task of the linguist(or psychologist)was to specify the properties of the AD that were responsible for the grammar.,Definition of Universal grammar,Cook(1985)summarizing the Chomsky

12、an position,defines universal grammar as the properties inherent in the human mind.Universal grmmar consists of a set of general priciples that apply to all languages rather than a set of particular rules.,Universal Grammar existed as a set of innate linguistic principles which comprised the initial

13、 state and which controlled the form which the sentences of any given language could take.Also part of the Universal Grammar was a set of discovery procedures for relating the universal principles to the data provided by exposure to a natural language.,普遍语法在母语与第二语言习得过程中所起的作用?,普遍语法的两大组成部分是普遍原则(princi

14、ples)和参数(parameters),两者合称为核心语法(core grammar)是语言中最本质的部分,是不用学的,天生的。要学的是具体的语法和词汇知识,这些知识因母语的不同而不同,它们的习得是通过参数值的设定。儿童由于具有这种习得机制,在广泛接触语言素材中,通过假说验证与先天的普遍语言相比较,认识到母语的语言规则,即取得了语言能力。,第二语言习得就是在已有的语言参数的基础上习得另一种可能与现有语言参数相同或不同的语言。语言习得过程就是根据所接触的语言材料建立语言参数值的过程。例如,任何一种语言都具有核心词和修饰词(如形容词+名词),这是一个普遍规律.但是有的语言修饰词在核心词之前,有的

15、则在核心词之后。比如,中文说“红色的书”,而法语则说:“Le livre rouge”(书红色的)。在习得过程中,如果所接触的语言是修饰词在核心词之前,学习者对这一规律的参数值即定位修饰词+核心词;如果接触相反的语言材料,参数就定在相反值上。,第二语言习得与第一语言习得二者的相同点:a.它们的发展模式相同;b.均受年龄因数的影响;c.语言输入与输出不对称;不同：第一语言和第二语言不一致的前提下,普遍语法通过第一语言做用在第二语言习得上。第二语言习得不同于第一语言习得。第一语言习得是在大脑的初始状态下进行的。所谓初始状态是指普遍语法还没有转化为具体语言的语法,因此第一语言的习得过成是参数值的确立

16、过程;第二语言习得是在大脑的稳定状态下进行的,在这种状态下,普遍语法已经转换为具体语言的语法,因此第二语言的习得过程是参数值再确立(parameter-resetting)的过程。正因为有这种差别,第一语言习得是无意识的,而第二语言习得是有意识的。在结果上,第一语言习得是百分之百的成功、圆满,而第二语言习得很难达到圆满。,普遍语法一定是处于初始状态的，被具体语法代替后自然消失。二语学习中，学员接触第二语言实例时会不由自主地将其与第一语言具体语法作比较，发现两者不一致时，修正参数，建立第二语言具体语法，储存大脑。大脑处于初始状态时参数是原则的限制范围，儿童通过假设验证过程确定某个具体语法后，参数

17、与原则相对稳定结合。,Lenneberg(1967)emphasized the biological prerequisites of language.Only homo sapiens was capable of learning language.Lenneberg argued that the childs brain was specially adapted to the process of language acquisition,but that this innate propensity was lost as maturation took place.He ar

18、gued that there was an age of resonance,during which language acquisition took place as a genetic heritage.,McNeill believes that the child built up his knowledge of his mother tongue by means of hypothesis testing.,What are mentalist views of L1 acquisition?,Mentalist views of L1 acquisition:1 Lang

19、uage is a human-specific faculty.2 Language exists as an independent faculty in the human mind i.e.although it is part of the learners total cognitive apparatus,it is separate from the general cognitive mechanisms responsible for intellectual development.3 The primary determinant of L1 acquisition i

20、s the childs acquisition device.Which is genetically endowed and provides the child with a set of principles about grammar.4 The acquisition device atrophies with age.5 the process of acquisition consists of hypothesistesting,by which means the grammar of the learners mother tongue is related to the

21、 principles of the universal grammar.,The primary determinant of L1 acquisition is the childs acquisition device.Why?(P45),The first is that many of the childrens early utterances were unique,in the sense that no native speaking adult could have produced them.If the childs linguistic output does not

22、 match the input the explanation must lie in the internal processing that has taken place.The second is that development was continuous and incremental,but could be characterized as a series of stages.a)the length of childrens utterances gradually increases.b)knowledge of the grammatical system is b

23、uild up in steps.(P46),According to mentalist accounts of FLA,language acquisition is a universal process.The term process is used with two related meanings.1.refers to the stages of development that characterize the route the child follows;it is a descriptive term.2.concerns how the child construct

24、s internal rules and how he adjusts them from stage to stage;it is an explanatory term.,What is Interlanguage?,Interlanguage is the term coined by Selinker(1972)to refer to the systematic knowledge of a second language which is independent of both the learner first language and the target language.T

25、he term has come to be used with different but related meanings:1)to refer to the system that is observed at single stage of development(i.e.an interlanguage).2)to refer to the series of interlocking systems which characterize acquisition,(i.e.the interlanguage continuum)3)to refer to particular mot

26、her tongue/target language combinations(e.g.French mother tongue/English target langue vs German mother tongue/English target language)Nemser approximative systems Corder-idiosyncratic dialects,transitional competence,What are the assumptions underlying interlanguage theory?,The assumptions underlyi

27、ng interlanguage theory-Nemser(1971)1)at any given time the approximative system is distinct from the L1and L2.2)the approximative systems form an evolving series.3)in a given contact situation,the approximative systems of learners at the same stage of proficiency roughly coincide.,The concept of hy

28、pothesis-testing was used to explain how the L2 learner progressed along the interlanguage continuum,in much the same way as it was used to explain L1 acquisition.Coder(1967)made this comparison explicit by proposing that at least some of the strategies used by the L2 learner were the same as those

29、by which FLA takes place.Particularly,Corder suggested that both L1 and L2 learners make errors in order to test out certain hypotheses about the nature of the language they are learning.He saw the making of errors as a strategies,evidence of learner-internal processing.,What are the principal proce

30、sses operated in interlanguage?(P48),Five principal processes operated in interlanguage-Selinker1)language transfer2)overgeneralization of target language rules3)transfer of training4)strategies of L2 learning5)strategies of L2 communication,Then interference was seen as one of several processes res

31、ponsible for interlanguage.Five processes together constitute the ways in which the learner tries to internalize the L2 system.The five processes are the means by which the learner tries to reduce the learning burden to manageable proportions Widdowson(1975b)suggested that the five processes can be

32、subsumed under the general process of simplification.(This concept on Page 304),What is fossilization?,Fossilization(P48):Selinker noted that many L2 learners(perhaps as many as 95 per cent)fail to reach target language competence.That is,they do not reach the end of the interlanguage continuum.They

33、 stop learning when their interlanguage contains at least some rules different from those of the target langue system.He referred to this as fossilization.,Fossilized structures can be realized as errors or as correct target language forms.When fossilization occurs,the learner has reached a stage of

34、 development in which feature x in his interlanguage has assumed the same form as in the target language,then fossilization of the correct form will occur.If the learner has reached a stage in which feature y does not have the same form as the target language,the fossilization will manifest itself a

35、s error.Fossilized structures may not be persistent.Selinker and Lamendella(1978a)argue that the causes of fossilization are both internal and external.,According to Chomsky and others,the true determinant of L1 acquisition was the childs acquisition device,but this changed with the age such that au

36、tomatic,genetically-endowed language acquisition was not possible after puberty.The question for SLA,then,was this:how did adults succeed in learning a L2 at all if resource to the acquisition device responsible for L1 acquisition was not possible?,Selinker suggested that those adults who successful

37、ly achieve native-speaker proficiency in the TL do so because they continue to make use of the acquisition device,or,as Lenneberg put it,latent language structure.,Relatively few adult L2 learners reach native-speaker competence.Selinker explained this by suggesting that these adult L2 learners fall

38、 back on a more general cognitive mechanism,which he labelled latent psychological structure,which is still genetically-determined,but does not involve resource to UG.,Therefore,according to Selinker,SLA can proceed in two different ways.It can utilize the same mechanisms as FLA,or it can make use o

39、f alternative mechanisms,which are presumably responsible for other types of learning apart from language.(cognitive organizer),What are the essential Characteristics of Language-learner language?,Language-learner language is permeable.The L2 learners interlanguage is permeable,in the sense that rul

40、es that constitute the learners knowledge at any one stage are not fixed,but are open to amendment.Language-learner language is dynamic.The L2 learners interlanguage is constantly changing.However,he does not jump from one stage to the next,but rather slowly revised the interim systems to accommodat

41、e new hypotheses about the target langue system.Language-learner language is systematic.Despite the variability of interlanguage,it is possible to detect the rule-based nature of the learners use of the L2.,What are the differences between Error analysis and Contrastive Analysis,Error analysis is a

42、procedure used by both researchers and teachers.It involves collecting samples of learner language,identifying the errors in the sample,describing these errors,classifying them according to their hypothesized causes,and evaluating their seriousness.Early interlanguage theory was closely associated w

43、ith Error Analysis,which constituted an attempt to explain errors.In mentalist theory errors serve as evidence of the learners active contribution to acquisition.Contrastive Analysis was devised to justify procedures for predicting errors.In accordance with Behaviourist learning theory,the preventio

44、n of errors was more important than the identification of errors.In behaviorist accounts errors were treated as evidence of non-learning.,What are the procedures for Error Analysis spelled out in Corder?(1974)(P51),1.A corpus of language is selected.2.The errors in the corpus are identified.3.The er

45、rors are classified.4.The errors are explained.5.The errors are evaluated.,The context for the new interest in errors was the recognition that they provided information about the process of acquisition.This term has two meanings.Thus two questions can be asked therefore.1.what light can the study of

46、 learner errors throw on the sequence of development the interlanguage continuum through which learners pass?2.What light can shed on strategies that the learner uses to assimilate the rules of L2?These two questions are of central importance to the main theme of this chapter natural order of develo

47、pment,What information about interlanguage does Error Analysis provide?(53),Error Analysis provides two kinds of information about interlanguage;Linguistic types of errorsPsycholinguistic type of errors:overgeneralization(comed)Ignorance of rule restrictions Incomplete application of rules False con

48、cepts hypothesized(he is speaks French),The most significant contribution of EA,apart from the role it played in the reassessment of the Contrastive Analysis Hypothesis,lies in its success in elevating the status of errors from undesirability to that of a guide to the inner workings of the language

49、learning process.As a result of interlanguage theory and the evidence accumulated from Error Analysis,errors were no longer seen as unwanted forms,but as evidence of the learners active contribution to SLA.,What are the empirical evidences for the interlanguage hypothesis?,Empirical evidence for the

50、 interlanguage hypothesis from:Cross-sectional researchLongitudinal studies,Empirical evidences for the interlanguage hypothesis,What evidences for the interlanguge hypothesis do the researchers try to find?creative construction interpretation of the interlanguage continuum.Claims that SLA follows a