Presentation on theme: "Theories of second language acquisition (week four)"— Presentation transcript:
1Theories of second language acquisition (week four) Group workPresentationByMiqdad AliMA Student in Applied Linguistics
2Variability versus uniformity of language development The nativist position is that every child is programmed to construct a grammar for his native language, containing the universal categories and relations of which he has knowledge. Though in its pure form, the claim is about knowledge not about performance it has seemed to many people that the identical and invariant knowledge that all children have should be reflected in their performance; in the way they understand and produce utterances in the course of their development. The claim about innate knowledge has no necessary implication for performance.
3If the knowledge is to have any psychological reality, the performance data should be in conformity with what can be predicted from the postulated knowledge. Regardless of theoretical models, if the innate component is large, the effect of the child’s general cognitive capacities and of his environment should be comparatively small, and there should be a large degree of uniformity for all children both in the way the development takes place, and in the general standard reached.
4If any variation is found it should be predictable from consideration of associated factors, such as the general learning ability of the children and the kind of environment they grow up in. Or it could be a matter of individual variations, children taking different paths for no obvious external reasons.
5Associated Factors: 1. General Cognitive Capacities: Beginning to speak early is popularly taken as a sign of intelligence, and cross-sectional studies have confirmed over and over again the relationship between early language development and general learning ability. The disparity between children can be very large.Graham (1968) showed in an experiment the importance of memory for sentence processing. He found that children who could repeat correctly two unconnected items could also repeat correctlyThere is a bird flying in the air.but they could not repeatThe dog that chased the duck is black.The children who could repeat five unconnected items could also manage the second sentence.
6Demonstrations that language development and general cognitive development are closely related can be interpreted in two ways:Nativists will argue that Graham experiment shows that it is only the limitation on memory span which prevents a child from applying his knowledge of the structure of sentences.Non-nativists would take the findings to show that children can begin to learn to process structures such as inserted relative clauses only when they have developed the cognitive capacity for dealing with them.
7L2 acquisition Theoretical and practical importance How L is presented in the mindHow L are learned leads to effective teaching TEQ
8Linguistic and Psychological theories Theories of l2 learningLinguistic and Psychological theoriesSome linguists have suggested that language acquisition is based on the presence of a specialized module of the human mind containing innate knowledge of principles common to all languages.in contrast, most psychologists have argued that language is processed by general cognitive mechanisms that are responsible for a wide range of human learning and information processing and requires no specialized module.
9UGUG: Universal grammar is a theory in linguistics that suggests that there are properties that all possible natural human languages have. Usually credited to Noam Chomsky, the theory suggests that some rules of grammar are hard-wired into the brain, and manifest themselves without being taught. There is still much argument whether there is such a thing and what it would be.Some language researchers noted that parents did not provide systematic feedback when young children produced speech that did not match the adult language.Chomsky inferred that children must have an innate language faculty, this faculty originally referred to LAD, and later as UGThe UG of human language originated with Chomsky’s (1968) view on L1 acquisition. He argued that, the kind of information which mature speakers of a language eventually have of their L1could not have been learned from the language they hear round them. This problem came to be called the ‘logical problem of language acquisitionChildren learn L1 while they face difficulties in grasping other kinds of knowledge. (cognitive development)Children with impaired intellectual ability can learn“logical problem of language acquisition”LAD and later UGChildren have L principles, they just have to use them.
10UG and L2 Critical age hypothesis and UG in L2, a controversial issue In L1 no feedback on errorsIn L2 competence is monitored not the performance(The tiger chases the lion or contrary of it?)This is to test a child’s competence through performance
11focuses on communicating messages and meanings Monitor theroyAn early and influential model of second language acquisition was the “Monitor Model”, developed by Krashen in 1970, and it is based on five basic hypotheses:The Acquisition-Learning HypothesisThe Monitor HypothesisThe Natural Order HypothesisThe Comprehensible input HypothesisThe Affective Filter HypothesisIt shares a number of UG’s assumptions but its scope is L2.L2 is acquired without instruction or feedback on errors.Krashen draws a line between acquisition and learningfocuses on communicating messages and meaningsdescribed as a conscious process
12Monitor theroyAn early and influential model of second language acquisition was the “Monitor Model”, developed by Krashen in 1970, and it is based on five basic hypotheses:The Acquisition-Learning HypothesisThe Monitor HypothesisThe Natural Order HypothesisThe Comprehensible input HypothesisThe Affective Filter Hypothesis
13The Monitor Hypothesis: What has been learned could be used as a monitor for the L2 learner to focus on the accuracy of the message.Natural order hypothesis: Learners go through the same predictable stages that the L1 learners do.Comprehensible input hypothesis: exposure to the varied and meaningful linguistic input.The affective filter hypothesis: the motivation of the learner is important for L2 learning.
14Definition of behaviourism Behaviourism is described as a developmental theory that measures observable behaviours produced by a learner’s response to stimuli. Responses to stimuli can be reinforced with positive or negative feedback to condition desired behaviours. Punishment is sometimes used in eliminating or reducing incorrect actions, followed by clarifying desired actions.
15BehaviourismAccording to B. Theory all learning including L learning occurs through a process of imitation, practice, reinforcement and habit formationEnvironment provides feedback on learners performanceChomsky attacked it and said that children utter novel words they do not repeat only.One of the points of B. Is that L1 habits which the learners have interfere with new habits in L2.
16Contrastive Analysis Hypothesis (CAH) says L1 helps in L2 learning in case of similarities between L1 and L2 structures. But in case of existence of differences between L1 and L2 problems would face L2 learners.Finally many researches concluded that L1 does not support learning L2.
17Cognitive psychologyCognitive psychology is the branch of psychology that studies mental processes including how people think, perceive, remember and learn. As part of the larger field of cognitive science, this branch of psychology is related to other disciplines including neuroscience, philosophy and linguistics.
18Cognitive psychologyNo need for brain linguistic structure as linguists sayLearner should exert efforts and pay attentionTheorists say L is acquired via Declarative knowledge which is intentional learning, then it becomes procedural knowledgeOther theorists use Controlled and Automatic processing.
19Controlled processing Controlled proc. is not always intentionalIn controlled proc. the learner access new or complex informationControlled proc. requires mental efforts.Someone is good in social conversation but not good in another field.
20Automatic processingIt occurs quickly and with minimal attention and effortLanguage itself is largely automatic, attention can be focussed on the contentVia repeated practice controlled knowledge becomes automatic
21information processing model Learning accurse through repeated practice, controlled knowledge becomes automatic.
22restructuringIt is a cognitive process in which the previously acquired information that has been somehow stored in separate categories is integrated and this integration expands the learner’s competence.New errors are made:Do you know what the children are doing?*Do you know what are the children doing?Some researchers of second language acquisition have argued that nothing is learned without (noticing)
23(chunk of information are stored in brain) connectionismConnectionists, emergentist and parallel distributed approach, all of them hypothesizes development of strong association between items that are frequently encountered together (events and objects too).She goes.I go.(chunk of information are stored in brain)
24Multidimensional model One of the central questions within psychological accounts of second language acquisition is why it is that L1 and L2 learners go through a series of predictable stages in their acquisition of grammatical features?Multidimensional model was originally developed as a result of the acquisition of German word order and on the basis of research with L2 learners of English. L2 learners acquire certain syntactic and morphological features of the L2 in predictable stages. These features were referred to as developmental, variation: appeared to be learned by some of the learners.
25Developmental features: L2 learners acquire certain syntactic and morphological features in predictable stagesWithin L2 acquisition the multidimensional model represents a way to relate underlying cognitive processes to stages in the L2 learner’s development. Each stage reflected an increase in complexity; a learner had to grasp one stage before moving to the next.
26Pedagogical implication One of the pedagogical implications drawn from the research related to the multidimensional model is the (teachability hypothesis) that learners can only be taught what they are psycholinguistically ready to learn.
27Interactionist perspective Social interaction has a role in L2 acquisitionSpeakers adjust their speech to the learnersLearners use variety of techniques and adjustment in order to negotiate meaningAdjustments include simplification and modification of phonology, syntax, vocabulary, and discourse.Krashen puts focus on comprehension in language acquisition.But meaning negotiation is not the only way to develop L2, it needs vocabulary, syntax etc...Interactional adjustments improve comprehension and comprehension allows acquisition.
28Sociocultural perspective There is a close tie between culture and mindAll learning is first social then individualDialogic conversation helps learners jointly construct knowledge then it is internalized by the individuals.The theorists in this field regard for the social, cultural and biological factors.
29Learner languageAccording to some researchers, the language produced by L2 learners did not conform to the target language, and the (errors) that learners made were not random, but reflected a systematic, knowledge of the L2.The term “Interlanguage” was coined to characterize this developing linguistic system of the L2 learner.Researchers found that many of the L2 errors were not influenced by L1.L1 and L2 learners of English over generalize the same errors (two mouses and she goed)Influence of L1 in L2 was completely rejectedResearchers focus on similarities in all L2 learners in a particular language
30Developmental sequences Brown’s longitudinal research on three children while acquiring L1The three of them acquired the grammatical morphemes in the same way, they made the same mistakes (‘s and ...ed)They acquired interrogative and negative sentences in the same wayThey made the same errors (foot = *foots), this is logical generalizationThus language learning goes through an internal process
31Eventually, according to researchers L2 learners, like L1 learners, governed partially by internal mechanismsL2 learners were observed to acquire other grammatical features of the language in a predictable order. They have been observed in the language of L2 learners learning a variety of target languages.For example in French and English, L2 learners acquire negative and integrative features in a similar way that they acquire L1 in their L. also in German L2 learners acquire word order features in predicable stages when they have L1 background .
32L1 influneceSome researchers and teachers believe that learners build on their knowledge of other LS. when they try to learn a new one.Current studies show L1 influence on L2 developing. Learners can’t transfer all patterns from L1, they will learn more about the L1 and L2 differences by changes that take place.pronunciation and word order are more likely to show L1 influence than grammatical morphemes.Learners will learn it’s not possible to use grammatical rules of a language in other languages, the learners will find that some forms are unusual or idiomatic so they can’t be transferred.
33L1 influenceWhen learners reach a developmental stage, they may slowed down because of particular interlanguage pattern is similar to a pattern in their L1. e.g. Spanish learners may use pre-verbal negation (*I no like that) longer more than learners that their L1 does not have pre-verbal negationGerman English learners may say: (He plays not baseball)French learners of E, when reach an advanced stage: Accept (Can he play baseball?) but reject (Can John play baseball?)
34Instruction and second language acquisition What is the role of instruction in L2?Instruction can have an important effect on L2 acquisition in terms of rate of learning and long term success to use language accurately so instruction does not prevent learners from developingAccording to Krashen instruction may interfere in the process of learning, for him exposure to the natural language is important as well as exposure to the comprehensible input.Certain type of instruction may appear to alter the developmental path of L2 acquisition. (exposure to one grammatical form after another in classroom)(in this way learners learn unusual learner characteristics)
35Communicative and content-based language teaching are two good methods But still there are shortcomings, like not all that can be communicated outside the class could be taught. The tenses cannot be exactly taught, for instance in classes about history in French, or differences between tu and vous.Such teaching lack high level of accuracy, like grammatical accuracy
36Learners can benefit from instruction while they make semantic or lexical errors, because they cause the flow of communication stop. But syntactic errors not.Errors that are influenced by L1 and do not interfere with meaning might be difficult. A French-speaking learner of English says “she is wearing a skirt red”Overall findings have shown learners in communicative and content-based classes benefit from opportunities to focus on language form when the instructional input is explicit in nature.
37conclusionSince 960 L2 learning has received a lot of attention and has become a field in its own right.In 1980 it was possible to read everything written about L2 acquisitionToday it has enormous scope and depth both in terms of variety of topics under investigation and the research approaches used to investigate them.