A- child lg learning is typical, similar from child to child, spontaneous, creative.
B-We say that children learn their lg typically because there are, indeed exceptions, which always involve very exceptional circumstance: either great phycical handicaps of child, or family settings in which adequate input for learning is absent.
C- Similarity of lg learning= Regularly seen stages: babbling- about 6 months, first words- about 1 year, first grammatical morphemes- about 2 years, basic mastery- by about 4 years, continued learning, especially of vocabulary, indeed throughout life.
D- We say children learn lgs spontaneously because there`s obviously a drive, a strong or innate motivation, by children to learn lg, so that instruction in the usual sense is unnecessary. This is evident when we compare the learning of speech and writing by children.
E- As lg is not speech, learning lg is not learning to speak.
F- Deaf children who receive suitable visual input learn lg perfectly- manually signed lg. => Lg exists fully apart from speech.
G- Lg is not speech but sth abstract & mental, underlying speech (a system of signs), & the forms, or medium, of lg can as well be speech, writing, gestures, or, conceivably, some other.
H- Stages in learning of Eng.: lg readiness- cooing- babbling- word recognition, first words- first meaning- intonation- phoneme learning order- phoneme substitutions- word structure- overextension & underextension of meaning- MLU, two word sentences- telegraphic speech- syntax of two word senteces- 200 word vocabulary, basic mastery- vocabulary growth- first grammatical morphemes.
I- Cooing: 6- 8 weeks old; the regular production of velar consonants & back vowles.
J- Babbling: a period of regular production by child of unrecognizable but word like vocalization; begining at about 6 months; non Eng. phones, such as bilabial fricatives, front rounded vowels, & retroflex stops may be produced; children practices the phones of the lg(s) they hear & will grow to speak; deaf children babble too, if they are exposed to signing, but their babbling is with hands.
K- The meaning of first words are concrete.
L- In the child`s early vocabulary, typically: names ( so called proper Ns) are among the first words; Ns are more common than Vs; first Vs are action Vs such as go and eat; and first Adjs concern vivid meaning such as dirty and funny.
M- The most frequent words of adult lg, grammatical morphemes such as the & of, are at first absent, since they are: abstract in meaning, low in infor. value compared to lexical morphemes, & short & unstressed.
N- Intonation: the first words may be heard as little sentences.
O-There are regularities concerning phneme acqusition: nasals & orals are relatively early, /m, n, p, b , k/; early voiceless stops tend to be unaspirated; early vowels are typically /a/, and/ or /i/, then often /u/; labial consonants /p, b, f, m, w/ will often be masterd earlier than those are at other places of articulation; certain phones, including /l, r, th, th/ of Eng. are relatively late.
P- When words are pronounced in non- adult ways, certain phoneme substitutions are observed; fronting, stopping, perservance & anticipation.
P1- Fronting: conconants with more forward articulation replace those with less forward articulation.
P2- Stopping: stops replace other manners of articulation.
P3- Perserverance: a preceeding phones replaces the following one.
P4- Anticipation: a following phone replaces a preceding one.
Q- Word structure: the first words of first lg learners takes the form CV, of simple "open" sylables or CVCV; if CVCV, the consonants are often the same because of perserverance and anticipation phonomena; have few closed" sylables"; fricatives may first appear as final consonants.
R- Overextension: dog may be used for cats & other stuffed animals.
S- Underextension: dog may be used for a single & special dog.
T- MLU= Mean Lenght of Utterance; it express the average number of morphemes in one of the child utterances- not always recognizable as sentences. Often no bound morphemes is used early, so each morpheme is a word.
U- Telgraphic Speech: about 18 months; lacking grammatical morphemes.
V- Syntax of two word sentences: Words appear to be classified by the child into two groups: object words= pre nouns, growing & relatively open class, such as pudding & baby; relation words= pivot words= pre verbs= action words, a more closed class, such as up, there & night night.
V1- An action word followed by an object word, such as there baby, hi juice & night night mommy; the reverse order is less often observed.
W- By age 2, the vocab of most children surpass 200 words, a great majority of which are Ns, especially proper & concret Ns, somewhat fewer Vs & a few Adjs, social words like yes, no, hey, good bye, &, untill late in the second year, no grammatical morphemes.
X- 18 months,100 words- 24m,200w- 30m,400w- 36m
Y- Sleepy time monologues: 24 months; private practice, before sleep.
Z- First grammatical morphemes: Vs+ing
Aa- The is the most frequent word in Eng., but it goes unlearned before age 3.
Bb- Negative sentences: about 18 months by no & not; before age 3 by can`t & don`t.
Cc- A 3 year old child often seems to talk like an adult. By age 4, many children are so accomplished linguistically that they often seem to have fully learned lg.
Dd- Continued Learning: a mid teenager may begin to use complex tense sequences.