Early Morphological Acquisition

Early Morphological Acquisition

A.  Two Kinds of Words

Lexical Class: carry major meanings of sentences: noun, verb, adjective, adverb

Functional Class: modulate the meanings of lexical class words

• Bound vs. Free morphemes

Bound Categories

- functional categories affixed to lexical categories

Noun: plural {-s}, e.g. two cat/s

possessive {-s}, e.g. cat/’s paw

Verb Inflections:

progressive {-ing} e.g. walk/ing

regular present {-s} e.g. walk/s

past tense {-ed}, e.d. walk/ed

Free Categories

- separate words

Prepositions, e.g. ‘in’, ‘on’, ‘under’

Articles, ‘the’, ‘a’

Pronouns, ‘he’ ‘him’ ‘she’ her’ etc.

Acquisition

• Children begin to acquire functional categories around the time they begin to make word combinations

• They are acquired over several years

B.  Influencing Factors

�� Semantic Complexity, e.g. {-ing} vs. {-ed}

�� Syntactic Complexity, e.g. agreement present tense {-s} vs. past tense {-ed}

‘I walk’ ‘he walk/s’

‘I walk/ed’ ‘he walk/ed’

�� Perceptual Salience, e.g. present {-s} vs. progressive {-ing}

�� Frequency,

e.g. {-s} vs {-ing}

e.g. ‘in’ vs. ‘between’

�� Allomorphy: variants of a single morpheme

E.g. ‘plural’ {-s}

cats /s/ dog /z/ bush /ez/

- children need to acquire all the variants

{-ing} has no variants

C.  Some Studies

Brown (1973)

14 Grammatical Morphemes

Obligatory Occurrence

I ‘on’ ‘plural’

II ‘ing’, ‘in’, past irregular

IV possessive

Brown’s Conclusions

�� Few grammatical morphemes acquired during the first 4 stages

�� Irregular past preceded regular past

�� Plural and –ing first inflections acquired

Cazden (1968)

Adam, Eve, Sarah

5 inflections

Measures:

• Correct use

• Inappropriate Use, e.g. ‘one dogs’

• Overgeneralizations, e.g. ‘two foots’

Interpretation

�� Inappropriate Use precedes overgeneralization

�� Inappropriate Use is a lexical error

�� Overgeneralization only occurs when there is a high rate of success

Marcus et al. 1992

• English past tense

• 11,521 irregular past tense verbs, 83 SS

• Low rate of overgeneralization 2.5%

Explanation:

• Irregulars are memorized; rule for regulars

• Retrieval of irregular blocks rule

• Errors are retrieval errors; i.e. when retrieval fails, rule is applied

Berko (1958)

• 5 & 6 year olds

• A range of English morphemes

• Nonsense words

Berko’s Results

�� Accurate use of all allomorphs takes a long time

�� Not just phonological, I.e. plural, possessive, & 3^rd person show different scores

Summary

�� Morphological acquisition covers several years

�� Different factors influence learning

�� Measures vary

D.  General Early Morphological Acquisition

One of the first steps in acquiring a morphology system is discovering which phonetic stringscorrespond to morphemes. These phonetic strings can then be further analyzed in order to determinetheir grammatical privileges and contribution to meaning and thus to bootstrap into a functionalmorphology system. In order to model acquisition of morphological forms by children, an automatic morphology discovery system must have the following characteristics. First, since morphemes must be acquired by the child, any morphology discovery system must use a plausible learning mechanism. This entails not only using information available to the language learner, but also using mechanisms that children possess. Second, because morphemes can appear as (multiple) prefixes, suffixes, and infixes in affixing languages, any morpheme discovery system must have flexibility in terms of the position in the word where the morpheme occurs. Third, it must generate a robust list of morphemes which is minimally sufficient to allow the child to bootstrap into the rest of the morphological system. Finally, given that grammatical morphemes generally occur with a large number of other morphemes (especially root morphemes) across various contexts, grammatical morphemes should play an especially important role in acquiring a morphological system.

The frequent sound sequence approach, when combined with the frames approach, provides a highly plausible model of the beginning stages of morpheme acquisition. Given the important role of homogenous environments, one can speculate that this method would be effective cross-linguistically, and thus could represent a general approach used by children acquiring a wide variety of affixing languages.

In the early stages of acquisition, when the learner has only been exposed to a relatively small amount of data, only a few rules can be learned. As more words are observed, rarer morphological patterns can rise above the noise and be learned.

In addition to identifying surface forms of morphemes, children are also acquiring the syntactic uses of morphemes and determining allophones. It is known in the acquisition literature (Slobin, 1973,1986) that acquisition of homophonous morphemes is delayed since a child must sort out the different syntactic functions of morphemes, whereas acquisition of unambiguous

morphemes is faster.

Children typically begin to say their first words between twelve and twenty months of age. And they produce systematic morphological modulations of those words within their first year of talking. As they move to more complex expression of their meanings, they add grammatical morphemes – prefixes, suffixes, prepositions, postpositions, and clitics. On nouns, for example, they start to add morphemes to mark such distinctions as gender, number, and case; on verbs, they add markers for aspect, tense, gender, number, and person. Within a particular language, children's mastery of such paradigms may take several years. There are at least three reasons for this: (a) some meaning distinctions appear to be more complex conceptually than others, and so take longer to learn; (b) some paradigms are less regular than others, and they too take longer to learn; and (c) language typology may affect the process of morphological acquisition: suffixes, for instance, are acquired more readily, and earlier, than prefixes.In order to acquire noun and verb morphology, children must first analyze the structure of words heard in input, identify stems and affixes, map consistent meanings onto them, and then begin to use those stems and affixes in new combinations. This process of analyzing form and assigning meaning is a prerequisite for the acquisition of inflectional morphology.

REFERENCES

Pdf file of Early Morphological Acquisition

Aronoff, Justin M., Nuria Giralt, and Toben H. Mintz. Stochastic Approaches to Morphology Acquisition, University of Southern California (Pdf file)

Lignos, Constantine., Chan, Erwin. Yang, Charles., P. Marcus, Mitchell. Evidence for  Morphological Acquisition Model from Development Data. University of Pensylvania, University of Arizona

sumber : http://citrariski.blogspot.com/p/makalah.html

Introduction The devalopment of children’s language is an interesting matter to discuss in phonology. We have already discussed clearly about LAD in our previous meeting. Here, we would like to take another object as matter of our discussion. Now, we try to use our previous discussion as one of source. We take some part in it and we try to analyse some distinction bwtween the development of western and Indonesian baby. This article address for how to Western and Indonesian baby produce sound in the phonological processes. It also attaches some differences within the producing sound. In this case, actually we have to know it, why the processes are different. In previous discussion there are some aspects which do not be addressed yet that become our current discussion, such as, first Language Acquisition for Indonesian baby since we are not native speaker for English Language, so we never know how actually the phonological processes develop for Western baby by comparing the processes and implementations between Western and Indonesian baby. Hopfully it is able to support the deeper understanding about Language Acquisition of students. Discussion 1. Stage of development There are some stage where the baby developes their language. 1. Vegetative sound (0-2 months) The sounds used in this stage are simply the natural sounds that babies make, e.g. crying, coughing, burping, and swallowing. These sounds have no real communicative significance as such: the baby cries reflexively (reflexive crying) because he or she is hungry or uncomfortable; the child burps because of wind, and so on. 2. Cooing and laughter (2-5 months) These vocalizations usually occur when the baby is comfortable and content. They are typically made up of vowel and consonant sounds. 3. Vocal play (4-8 months) At this stage the infant engages in longer and more continuous streams of either vowel or consonant sounds. 4. Babbling (7-13 months) This is the stage most commonly thought of as being associated with language development. Most parents will remember their child passing through this stage. There is no significant difference between Western and Indonesian stage of development. The moments above also uccur for Indonesian baby since all babies in the world actually have the same processes. 2. Children’s Phonological Simplifying Processes Young children have insufficient ability to co-ordinate the movement of their vocal apparatus. Therefore, they simplify the production of complex words. These simplifications are not random but predictable. Many phonological processes have been identified. This article considers structural simplifications such as reduplication, deletion, metathesis and cluster reduction, and systemic simplifications such as substitutions and assimilations. Structural Simplification involves 3 alterations to the structure of a particular word, they are: a) Reduplication occurs whenever the initial CV syllable in multisyllabic word is repeated. Example: Western baby Javanese baby Bottle said as bobo. biscuit being said as bibi Water being said as wawa. Dik kono said as nono Mrene said as nene b) Deletion occurs omit particular speech segments. There are two main speech segments that are typically deleted: (1) Consonant deletion occurs whenever a consonant in syllable-initial or syllable-final position is omitted. Western baby Indonesian baby (Initial consonant deletion), e.g. catbecomes at, boat becomes oat or at the ends of words (final consonant deletion), e.g. lidbecomes li, cup becomes cu. mobil said as /bi/. (2) Weak syllable deletion occurs whenever the unstressed or weak syllable of a multi-syllabic word is omitted. Western baby Indonesian baby Banana may become nana; octopus may become ocpus. - c) Cluster reduction occurs when one or more consonants in a cluster are omitted. Western baby Indonesian baby . Plan (CCVC) becomes an (VC); mast (CVCC) becomes ma (CV). Plan (CCVC) may become pan (CVC) or lan(CVC); mast (CVCC) may become mas (CVC) or mat (CVC). - d) Metathesis occurs when two consonants within a syllable are placed in a different order. Western baby Indonesian baby Cup becomes puc; dog becomes god. - Here we can see some difference between implementation of phonologycal process for western baby and Indonesian baby. Structural simplyfication happens to all children whenever they are. On the another hand, Indonesian babies are unable to produce all categories in structural simplyfication, such as metathesis, cluster reduction, and in weak syllable deletion since Indonesian words includes Javanese do not have the same pattern as in English langiuage. The common situatuation that happen in Indonesia are: · Reduplication such as, disana said as nana · Deletion such as, mobil said as bil · Tend to use the last syllable such as, sepeda said as da. This happen based on Slobin oppinion that whereever children stay, they tend to pay attention to the last pattern of word. It happens regularly to Indonesian children then to western children since the pattern used in Indonesia has complex pattern or polysyllabic while the most words English language is monosyllabic. Here the children in Indonesia have to decide which syllable that will be produced then; they choose the last syllable based on reason above. · Deletion the front consonant such as: Uyung artinya burung Onyet artinya monyet Ambu artinya jambu Isang artinya pisang Eyuk artinya jeruk Systemic simplifications involves 2 alterations to the structure of a particular word, they are: a) Substitutions there are many different types of substitutions that can be made in typically developing speech. The following ways are how to operate the Phonological Processes: - Fronting occurs when any consonant that is made posterior to the alveolar ridge is substituted by another consonant that is made at or in front of the alveolar ridge. Examples: Western baby Indonesian baby goat may be said as doat cod being said as tod gun being said as dun kuku being said tutu gajah being said dajah didi being said gigi - Backing occurs whenever a non-velar or non-glottal consonant (i.e. a bilabial, labio-dental, dental, alveolar, post-alveolar or palatal consonant) is substituted by a velar /k ɡ ŋ/ or glottal /h ʔ/consonant. Examples: Western baby Indonesian baby bun may be said as gun door being said as goor tar being said as car duduk being said guguk tali being said kali (this example usually occurs in a baby using ‘dot’ in fairly long time) - Stopping occurs when continuant consonants (nasals, fricatives, affricates and approximants) are substituted with a stop consonant /p b t d k g ʔ/. Examples: Western baby Indonesian baby consider the word sock. The initial ‘s’ sound is sustainable, i.e. we are able to prolong this sound when we say it. Try it now by taking a deep breath and see how long we can say the single sound ‘ssss…’ It is evident that we can hold this sound for several seconds. But now try and sustain the sound‘t’ (as in the words tip andhot). We will see that this sound cannot be sustained. ‘t’ is plossive (actually it is the same with western) e.i. topi and sikat. ‘s’ is fricative (it is also the same with Western) e.i. satu. b) Assimilations occur when one speech segment is transformed into another owing to the influence of a neighbouing segment. Why the first sound produced by baby is mama and papa? There are some reasons to why the first sound produced by baby is mama and papa such as: from the aspect of one step of development process, and neorobiologis. There are also some different oppinion between the linguist and psicolog. When we discuss about this case, it’s better for us to have a look to the one step of development language process, babbling. Here, children have produced different vowel and consonant like frikative and nasal. They begin to mix consonant and vowel. Babling begins with consonant and followed by vowel. It happens around 8 months, in this agethe pattern K-V being repeted such as: K1 V1 K1 V1 K1 V1…papapa mamama bababa… Then many linguists argue that mama and papa can not be indicated as the name called for the mother and father since it is the only part of children articulation. On the contrary, some spycolog argue that there some emotional involve to the baby because of the near dictance among them and because of them the exist of the baby is mediated. So, the baby wants that name to be said for the first time. From neurobiology we get the key, reduplication of words.Baby’s brain give good respons to it. (Judit Gervain, University British-Columbia expert). He found trough his observation involve 22 babies. When some reduplication words given, babies temporal brain and frontal give reaction. On the contrary, when unreduplication words given, there is no any respon from any part of baby’s brain. Then, it is clear enough why the words "mama" atau "papa", "tata", "dada", become the easier word to train children. This attemp also indicates that ability in knowing words which are reduplication is base ability of people brain. Finaly, it happens to both children in Indonesia and western baby. They produces mama and papa pattern in their development language process. Conclusion What are the differences between Western and Indonesian phonological processes? 1. The structure of words 1. Monosyllable >< polysyllable English Indonesia 2. English : many structures pattern CCVC cluster reductrion Indonesia : not many CCVC are found in Indonesian word structure since most Indonesian word structures pattern CVCV. Those differences has influenced significantly to the production of speech sound. 2. The different society between Western and Indonesian babies that exist in their environment inflicts the different process. That has been prooved by comparing the process of symplification both English and Indonesian baby. Reference - Bowen, C. (1998). Developmental phonological disorders. A practical gide for families ang teachers. Melbourne: ACER Press. - Grunwell, P. (1997). Natural phonology. In M. Ball & Kent (Eds.), The new phonologies: Developments in clinical linguistics. San Diego: Singular Publishing Group, Inc. - www.superduperinc.com - CLINIC FOR CHILDREN http://childrenclinic.wordpress.com/ - Dardjowidjojo, Soenjono. Psikolinguistik: Pengantar Pemahaman Manusia. Jakarta: Yayasan Obor Indonesia, 2003. - Tarigan, Henry Guntur. Psikolinguistik. Bandung: Penerbit Angkas, 1986. - Mar’at, Samsunuwiyati. Psikolingustik: Suatu Pengantar. Bandung: PT Refika Aditama, 2005.

Introduction

The devalopment of children’s language is an interesting matter to discuss in phonology. We have already discussed clearly about LAD in our previous meeting. Here, we would like to take another object as matter of our discussion. Now, we try to use our previous discussion as one of source. We take some part in it and we try to analyse some distinction bwtween the development of western and Indonesian baby.

This article address for how to Western and Indonesian baby produce sound in the phonological processes. It also attaches some differences within the producing sound. In this case, actually we have to know it, why the processes are different. In previous discussion there are some aspects which do not be addressed yet that become our current discussion, such as, first Language Acquisition for Indonesian baby since we are not native speaker for English Language, so we never know how actually   the phonological processes develop for Western baby by comparing the processes and implementations between Western and Indonesian baby.

Hopfully it is able to support the deeper understanding about Language Acquisition of students.

Discussion

1.     Stage of development

There are some stage where the baby developes their language.

1.      Vegetative sound (0-2 months)

The sounds used in this stage are simply the natural sounds that babies make, e.g. crying, coughing, burping, and swallowing. These sounds have no real communicative significance as such: the baby cries reflexively (reflexive crying) because he or she is hungry or uncomfortable; the child burps because of wind, and so on.

2.      Cooing and laughter (2-5 months)

These vocalizations usually occur when the baby is comfortable and content. They are typically made up of vowel and consonant sounds.

3.       Vocal play (4-8 months)

At this stage the infant engages in longer and more continuous streams of either vowel or consonant sounds.

4.      Babbling (7-13 months)

This is the stage most commonly thought of as being associated with language development. Most parents will remember their child passing through this stage.

There is no significant difference between Western and Indonesian stage of development. The moments above also uccur for Indonesian baby since all babies in the world actually have the same processes. 

2.     Children’s Phonological Simplifying Processes

Young children have insufficient ability to co-ordinate the movement of their vocal apparatus. Therefore, they simplify the production of complex words. These simplifications are not random but predictable. Many phonological processes have been identified. This article considers structural simplifications such as reduplication, deletion, metathesis and cluster reduction, and systemic simplifications such as substitutions and assimilations.

Structural Simplification involves 3 alterations to the structure of a particular word, they are:

a)      Reduplication occurs whenever the initial CV syllable in multisyllabic word is repeated.

Example:

Western baby	Javanese baby
Bottle said as bobo. biscuit being said as bibi Water being said as wawa.	Dik kono said as nono Mrene said as nene

b)      Deletion occurs omit particular speech segments. There are two main speech segments that are typically deleted: (1) Consonant deletion occurs whenever a consonant in syllable-initial or syllable-final position is omitted.

Western baby	Indonesian baby
(Initial consonant deletion), e.g. catbecomes at, boat becomes oat or at the ends of words (final consonant deletion), e.g. lidbecomes li, cup becomes cu.	mobil said as /bi/.

(2) Weak syllable deletion occurs whenever the unstressed or weak syllable of a multi-syllabic word is omitted.

Western baby	Indonesian baby
Banana may become nana; octopus may become ocpus.	-

c)      Cluster reduction occurs when one or more consonants in a cluster are omitted.

Western baby	Indonesian baby
. Plan (CCVC) becomes an (VC); mast (CVCC) becomes ma (CV). Plan (CCVC) may become pan (CVC) or lan(CVC); mast (CVCC) may become mas (CVC) or mat (CVC).	-

d)     Metathesis occurs when two consonants within a syllable are placed in a different order.

Western baby	Indonesian baby
Cup becomes puc; dog becomes god.	-

Here we can see some difference between implementation of phonologycal process for western baby and Indonesian baby. Structural simplyfication happens to all children whenever they are. On the another hand, Indonesian babies are unable to produce all categories in structural simplyfication, such as metathesis, cluster reduction, and in weak syllable deletion since Indonesian words includes Javanese do not have the same pattern as in English langiuage.

The common situatuation that happen in Indonesia are:

·         Reduplication such as, disana said as nana

·         Deletion such as, mobil said as bil

·         Tend to use the last syllable such as, sepeda said as da.

This happen based on Slobin oppinion that whereever children stay, they tend to pay attention to the last pattern of word. It happens regularly to Indonesian children then to western children since the pattern used in Indonesia has complex pattern or polysyllabic while the most words English language is monosyllabic. Here the children in Indonesia have to decide which syllable that will be produced then; they choose the last syllable based on reason above.

·         Deletion the front consonant such as:

Uyung artinya burung

Onyet artinya monyet

Ambu artinya jambu

Isang artinya pisang

Eyuk artinya jeruk

Systemic simplifications involves 2 alterations to the structure of a particular word, they are:

a)      Substitutions there are many different types of substitutions that can be made in typically developing speech. The following ways are how to operate the Phonological Processes:

-          Fronting occurs when any consonant that is made posterior to the alveolar ridge is substituted by another consonant that is made at or in front of the alveolar ridge.

Examples:

Western baby	Indonesian baby
goat may be said as doat cod being said as tod gun being said as dun	kuku being said tutu gajah being said dajah didi being said gigi

-          Backing occurs whenever a non-velar or non-glottal consonant (i.e. a bilabial, labio-dental, dental, alveolar, post-alveolar or palatal consonant) is substituted by a velar /k ɡ ŋ/ or glottal /h ʔ/consonant.

Examples:

Western baby	Indonesian baby
bun may be said as gun door being said as goor tar being said as car	duduk being said guguk tali being said kali (this example usually occurs in a baby using ‘dot’ in fairly long time)

-          Stopping occurs when continuant consonants (nasals, fricatives, affricates and approximants) are substituted with a stop consonant /p b t d k g ʔ/.

Examples:

Western baby	Indonesian baby
consider the word sock. The initial ‘s’ sound is sustainable, i.e. we are able to prolong this sound when we say it. Try it now by taking a deep breath and see how long we can say the single sound ‘ssss…’ It is evident that we can hold this sound for several seconds. But now try and sustain the sound‘t’ (as in the words tip andhot). We will see that this sound cannot be sustained.	‘t’ is plossive (actually it is the same with western) e.i. topi and sikat. ‘s’ is fricative (it is also the same with Western) e.i. satu.

b)     Assimilations occur when one speech segment is transformed into another owing to the influence of a neighbouing segment.

Why the first sound produced by baby is mama and papa?

There are some reasons to why the first sound produced by baby is mama and papa such as: from the aspect of one step of development process, and neorobiologis. There are also some different oppinion between the linguist and psicolog.

When we discuss about this case, it’s better for us to have a look to the one step of development language process, babbling. Here, children have produced different vowel and consonant like frikative and nasal. They begin to mix consonant and vowel. Babling begins with consonant and followed by vowel. It happens around 8 months, in this agethe pattern K-V being repeted such as:

K1 V1 K1 V1 K1 V1…papapa mamama bababa…

Then many linguists argue that mama and papa can not be indicated as the name called for the mother and father since it is the only part of children articulation.

            On the contrary, some spycolog argue that there some emotional involve to the baby because of the near dictance among them and because of them the exist of the baby is mediated. So, the baby wants that name to be said for the first time.

From neurobiology we get the key, reduplication of words.Baby’s brain give good respons to it. (Judit Gervain, University British-Columbia expert). He found trough his observation involve 22 babies. When some reduplication words given, babies temporal brain and frontal give reaction. On the contrary, when unreduplication words given, there is no any respon from any part of baby’s brain.

Then, it is clear enough why the words "mama" atau "papa", "tata", "dada", become the easier word to train children. This attemp also indicates that ability in knowing words which are reduplication is base ability of people brain.

Finaly, it happens to both children in Indonesia and western baby. They produces mama and papa pattern in their development language process.

Conclusion

What are the differences between Western and Indonesian phonological processes?

1. The structure of words

            1. Monosyllable           ><        polysyllable

                    English                            Indonesia

            2. English        : many structures pattern CCVC                                cluster reductrion

Indonesia    : not many CCVC are found in Indonesian word structure since most

                       Indonesian word structures pattern CVCV.

    Those differences has influenced significantly to the production of speech sound.

2. The different society between Western and Indonesian babies that exist in their environment inflicts the different process. That has been prooved by comparing the process of symplification both English and Indonesian baby.

Reference

-          Bowen, C. (1998). Developmental phonological disorders. A practical gide for families ang teachers. Melbourne: ACER Press.

-          Grunwell, P. (1997). Natural phonology. In M. Ball & Kent (Eds.), The new phonologies: Developments in clinical linguistics. San Diego: Singular Publishing Group, Inc.

-          www.superduperinc.com

-          CLINIC FOR CHILDREN

http://childrenclinic.wordpress.com/

-   Dardjowidjojo, Soenjono. Psikolinguistik: Pengantar Pemahaman Manusia. Jakarta: Yayasan Obor Indonesia, 2003.

-     Tarigan, Henry Guntur. Psikolinguistik. Bandung: Penerbit Angkas, 1986.

-     Mar’at, Samsunuwiyati. Psikolingustik: Suatu Pengantar. Bandung: PT Refika Aditama, 2005.

First Language Acquisition

Introduction

Language acquisition is one of the central topics in cognitive science. Every theory of cognition has tried to explain it; probably no other topic has aroused such controversy. Possessing a language is the quintessentially human trait: all normal humans speak, no non human animal does. Language is the main vehicle by which we know about other people's thoughts, and the two must be intimately related. Every time we speak we are revealing something about language, so the facts of language structure are easy to come by; these data hint at a system of extraordinary complexity. Nonetheless, learning a first language is something every child does successfully, in a matter of a few years and without the need for formal lessons. With language so close to the core of what it means to be human, it is not surprising that children's acquisition of language has received so much attention. Anyone with strong views about the human mind would like to show that children's first few steps are steps in the right direction.

Definition

Acquisition is the cognitive process of acquiring skill or knowledge. Whereas language acquisition is the process how language is acquired or learned. First language refers to the first language which is heard by infant. In this case, children try to express their mother tongue into ungrammatical rules because they still hear from people say and imitate them. First language acquisition is always collateral with second language acquisition. It means that first language acquisition study about mother tongue or native language whereas second language acquisition study about additional language. For example, people who born in Java. First language, Javanese, which they heard is first language and Indonesian as second language. 

The stages of language acquisition

There are four stages, how infants develop their first language acquisition. First stage is word goo-goo- gaa-gaa. Those are the first languages which are expressed by baby. In this stage, baby try to express what they want but baby only can speak goo-goo-gaa-gaa to express anything. Whether baby is happy or hungry, baby always speak those words.  The second stage appears when children begin to say simple word such as mama and water. In this stage, children have memorized some word in their mind. They also try to imitate what is other people around them say. Then they say in simple word to express something. Third stage, children try to the real communication. In this stage children start to say in a short sentence into ungrammatical such as “give milk” means that they want milk and daddy home means that their father has returned. Forth stage, children start to develop more and more complex word in a grammatical concept or rule. In the age four and five, they can indentify word whether its word plural or singular such as book and books. Actually in this stage, children still have some errors in grammatical rules but, it is not commonly taught in American schools until children are twelve or older.

Beginning of language development

Pre birth

·         Has been scientifically proven that a baby Music can develop a baby’s brain.

·         can recognise the mothers voice.

·         Before the child is born it can recognize words.

Stage 1: Basic Biological Noise Stage (0-8 Weeks)

·         Child expresses itself through crying.

·         They show reflexive responses and not conscious responses.

·         Child starts with vowel ‘A’ sounds.

·         They learn to control their air stream mechanism.

Stage 2: Cooing & Laughing Stage (8-20 Weeks)

·           Make different cooing noises – e.g. ‘coo’, ‘goo’ ‘ga-ga’

·           Recognise parents faces and speech.

·           Towards the end of the stage they begin to string cooing noises.

·           They recognise language has a structure.

·           Learn to express themselves through laughing and chuckling.

·           Have control over their tongue.

Stage 3: Vocal Play (20-30 Weeks)

·         Begin to use consonant and vowel sounds.

·         Able to adjust pitch.

·         playing and experimenting’

Stage 4: Babbling Stage (25-50 Weeks)

·           2 types of babbling sounds-

·           Re-Duplicating- Repeat Sounds (E.G. Woof Woof)

·           Varigated- use different sound patterns and put them together.

·           The words have no meaning to the child as they think they are just making sounds. 

Stage 5: Melodic Utterance Stage (10-13 Months)

·                     A variation in rhythm, melody and tone is shown

·                     The child begins to see some meaning to what they say.

·                     Proto words used- when the child doesn’t say words it recognizes but realizes that words are parts of a sound.

Age 12-18 Months

·           Developments occur rapidly.

·           Intonations used to show feelings and purpose.

·           Children begin to develop at different levels.

·           Single word utterances – concrete nouns

·           Holophrastic phrases – couple of words put together which have no grammatical concept

·           Child learns about 10-20 words each month.

·           Over extension – when child uses one word to describe lots of things.

·           no concept of differentiating

·           e.g. 4 legged object = dog

·           Under extension - have yet to acquire the knowledge that there are many numbers of the same thing in the world ( e.g. lots of cars in world)

·           have yet to acquire the concept of concrete nouns.

·           Mismatch – get the name of something wrong (e.g. car = doll)

·           Begin to use modifiers so add extra words in front of another word (e.g. go sleep)

Age 18-24 Months

·           Have a vocabulary of 200 words – shows how quickly they are learning.

·           Pronunciation  - some syllables dropped (e.g. tomato = mato)

·           Consonant clusters avoided i.e. sky - guy

·           Re-duplicate sounds- e.g. baby = baybay

·           no consistency of speaking

Expressive Language Learning to Speak, and to Use Language

-        Birth

Newborn babies make sounds that let others know that they are experiencing pleasure or pain.

-        0-3 Months

Your baby smiles at you when you come into view. He or she repeats the same sound a lot and "coos and goos" when content. Cries "differentiate". That means, the baby uses a different cry for different situations. For example, one cry says "I'm hungry" and another says "I have a pain".

-        4-6 months

Gurgling sounds or "vocal play" occur while you are playing with your baby or when they are occupying themselves happily. Babbling really gets going in this age range, and your baby will sometimes sound as though he or she is "talking". This "speech-like" babbling includes many sounds including the bilabial (two lip) sounds "p", "b" and "m". The baby can tell you, using sounds or gestures that they want something, or want you to do something. They can make very "urgent" noises to prompt you into action.

-        7-12 months

The sound of your baby's babbling changes. This is because it now includes more consonants, as well as long and short vowels. He or she uses speech or other sounds (i.e., other than crying) in order to get your attention and hold on to it. And your baby's first words (probably not spoken very clearly) have appeared! ("MaMa", "Doggie", "Night Night", "Bye Bye")

-        1-2 years

Now your baby is accumulating more words as each month passes. he or she will even ask 2-word questions like "Where ball?" "What's that?" "More chippies?" "What that?", and combine two words in other ways to make the Stage 1 Sentence Types ("Birdie go", "No doggie", "More push"). Words are becoming clearer as more initial consonants are used in words.

-        2-3 years

Your two or three year old's vocabulary is exploding! He or she seems to have a word for almost everything. Utterances are usually one, two or three words long and family members can usually understand them. Your toddler may ask for, or draw your attention to something by naming it ("Elephant") or one of its attributes ("Big!") or by commenting ("Wow!").

-        3-4 years

Sentences are becoming longer as your child can combine four or more words. They talk about things that have happened away from home, and are interested in talking about pre-school, friends, outings and interesting experiences. Speech is usually fluent and clear and "other people" can understand what your child is saying most of the time. If stuttering occurs, see a speech-language pathologist. Stuttering is not a normal part of learning to talk, and neither is persistent hoarseness.

-        4-5 years

Your child speaks clearly and fluently in an easy-to-listen-to voice. He or she can construct long and detailed sentences ("We went to the zoo but we had to come home early because Josie wasn't feeling well"). He or she can tell a long and involved story sticking to the topic, and using "adult-like" grammar. Most sounds are pronounced correctly, though he or she may be lisping as a four year old, or, at five, still have difficulty with "r", "v" and "th". Your child can communicate easily with familiar adults and with other children. They may tell fantastic "tall stories" and engage strangers in conversation when you are out together.

Theories of Language Acquisition

Over the last fifty years, several theories have been put forward to explain the process by which children learn to understand and speak a language. They can be summarized as follows:

Theory	Central Idea	Individual most often associated with theory
Behaviorist/ imitation	Children imitate adults. Their correct utterances are reinforced when they get what they want or are praised.	Skinner
Innateness	A child's brain contains special language-learning mechanisms at birth.	Chomsky
Cognitive	Language is just one aspect of a child's overall intellectual development.	Piaget
Interaction	This theory emphasizes the interaction between children and their care-givers.	Bruner

1.      Behaviorism

The behaviorist psychologists developed their theories while carrying out a series of experiments on animals. For example rats or birds, they could be taught to perform various tasks by encouraging habit-forming. It also will happen to the children or infant, if they do some activities continuosly and they get motivation to do that, it can form their habit.  Moreover, by looking at the adults behavior the children can imitate adults behavior, because they have ability to remember and imitate what they looking at.

Then the behaviorist B. F. Skinner proposed this theory as an explanation for language acquisition in humans.  In Verbal Behavior (1957), he stated:

"The basic processes and relations which give verbal behavior its special characteristics are now fairly well understood.  Much of the experimental work responsible for this advance has been carried out on other species, but the results have proved to be surprisingly free of species restrictions. Recent work has shown that the methods can be extended to human behavior without serious modifications." (Cited in Lowe and Graham, 1998, p68)

Skinner suggested that a child imitates the language of its parents or carers. Successful attempts are rewarded because an adult who recognizes a word spoken by a child will praise the child and/or give it what it is asking for.  Successful utterances are therefore reinforced while unsuccessful ones are forgotten.

Limitations of Behaviourism

Beside there some truth in Skinner's explanation, but there are many objections to it, such as:

·         Language is based on a set of structures or rules.

·         The vast majority of children go through the same stages of language acquisition.

·         Children are often unable to repeat what an adult says

·         Few children receive much explicit grammatical correction.

2.      Innateness

Noam Chomsky published a criticism of the behaviourist theory in 1957.  In addition to some of the arguments listed above, he focused particularly on the impoverished language input children receive. Adults do not typically speak in grammatically complete sentences.  In addition, what the child hears is only a small sample of language.

Chomsky concluded that children must have an inborn faculty for language acquisition. According to this theory, the process is biologically determined - the human species has evolved a brain whose neural circuits contain linguistic information at birth.  The child's natural predisposition to learn language is triggered by hearing speech and the child's brain is able to interpret what s/he hears according to the underlying principles or structures it already contains.  This natural faculty has become known as the Language Acquisition Device (LAD). This ability enable the human to learn any language in this world.

For example, the LAD already contains the concept of verb tense.  By listening to such forms as "worked", "played" and "patted", the child will form the hypothesis that the past tense of verbs is formed by adding the sound /d/, /t/ or /id/ to the base form. This, in turn, will lead to the "virtuous errors" mentioned above.  It hardly needs saying that the process is unconscious.

3.      The Cognitive Theory

The Swiss psychologist Jean Piaget placed acquisition of language in the context of a child's mental or cognitive development.  He argued that a child has to understand a concept before she/he can acquire the particular language form which expresses that concept.

A good example of this is seriation. There will be a point in a child's intellectual development when s/he can compare objects with respect to size. This means that if you gave the child a number of sticks, s/he could arrange them in order of size.  Piaget suggested that a child who had not yet reached this stage would not be able to learn and use comparative adjectives like "bigger" or "smaller".

Object permanence is another phenomenon often cited in relation to the cognitive theory. During the first year of life, children seem unaware of the existence of objects they cannot see.  An object which moves out of sight ceases to exist.  By the time they reach the age of 18 months, children have realized that objects have an existence independently of their perception. The cognitive theory draws attention to the large increase in children's vocabulary at around this age, suggesting a link between object permanence and the learning of labels for objects.

4.      Input or Interactionist Theories

In contrast to the work of Chomsky, more recent theorists have stressed the importance of the language input children receive from their care-givers.  Language exists for the purpose of communication and can only be learned in the context of interaction with people who want to communicate. Interactionists such as Jerome Bruner suggest that the language behavior of adults when talking to children (known by several names by most easily referred to as child-directed speech or CDS) is specially adapted to support the acquisition process.  This support is often described to as scaffolding for the child's language learning.  Bruner also coined the term Language Acquisition Support System or LASS in response to Chomsky's LAD.  Colwyn Trevarthen studied the interaction between parents and babies who were too young to speak.  He concluded that the turn-taking structure of conversation is developed through games and non-verbal communication long before actual words are uttered.

Scaffolding Theory was first introduced in the late 1950s by Jerome Bruner, a cognitive psychologist. He used the term to describe young children's oral language acquisition. Helped by their parents when they first start learning to speak, young children are provided with instinctive structures to learn a language, for example are bed-time stories and read aloud. Scaffolding represents the helpful interactions between adult and child that enable the child to do something beyond his or her independent efforts. The construction of a scaffold occurs at a time where the child may not be able to articulate or explore learning independently. The scaffolds provided by the tutor do not change the nature or difficulty level of the task; instead, the scaffolds provided allow the student to successfully complete the task.

The functions of children’ language

There are some of the functions of children’ language, namely:

1.      Instrumental function

Child uses language to express needs and get what they want.

E.g. want drink

2.      Regulatory function

In this function that language  is used to tell others what to do and child realizes language is a useful tool as by using language they can get what they want.

E.g. go away

3.      Interactional function

Language which is used to communicate with other people and make a relationship.

E.g. love you, daddy, thank you.

4.      Personal function

-        When the child used language to express feelings and opinions

-        Realise language is more than demanding and get praised for using language.

E.g. me good girl,

Those functions help the child to satisfy its physical, emotional and social needs.

5.      Heuristic funtion

Language is used to get info about the environment or world. Child uses language to ask questions about everything and he/she is  always seeking an answer.

E.g. what that tractor doing?

6.      Imaginative function

-        Language is used to tell stories and to create an imaginary situation.

-        Child is able to recognize an object can be called many things.

E.g. creating an imaginary friend.

These functions  help the child come to make interaction with the environment around them.

7.      Informative function

-        Child begins to use language to talk about kinds of new things.

-        They learn to represent themselves using language.

E.g. telling a story about what happened to them. 

This function is representational stage where the child uses language to convey facts and information.  

Conclusion

Language acquisition is the process by which humans acquire the capacity to perceive, produce and use words to understand and communicate. First language acquisition is the ability of human to acquire their mother tongue from their early age. There are four theories to describe the process of children in understanding and practicing their first language, behaviorist/imitation, innateness, cognitive,interaction.

The significance of first language acquisition for children are to express needs and get what they want, used to tell others what to do, and  tell stories and to create an imaginary situation.