stages of first language acquisition online powerpoint 2 14
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STAGES O
F FIR
ST
LANGUAGE A
CQUISIT
ION
DR
. C
OM
F OR
T P
RA
T T
STAGES OF FIRST LANGUAGE DEVELOPMENTAge Accomplishment Examples
0-2 months Crying (express hunger and discomfort)
2-4 months Cooing (express satisfaction or pleasure) aaa, ooo
4-9 monthsBabbling, gurgling, changing to echolalic babbling
gagaga, mamamama
9-18 months
One-word utterances; refer to people and objects in baby’s life
juice; mama
18 months—2 ½ years
Two-word utterances; the beginning of syntax, expanding to three-word utterances; allows for more communicative functions (commenting, negating, requesting, & questioning)
more juicejuice fall down
Daddy go?
2 ½ years —4 years
Telegraphic Stage (S-V-O): Expanded syntax and vocabulary; omit key grammatical markers and function words
I eated bread
DEVELOPMENTAL SEQUENCESStages are universal.
Year 1 – Involuntary crying when they are
hungry or uncomfortable Babbling and gurgling Can distinguish between sounds
DEVELOPMENTAL SEQUENCES
1 yr.
2 yrs.
STAGES OF LANGUAGE DEVELOPMENT
EMERGENCE AND DEVELOPMENT OF LANGUAGE FEATURES♣ Universal♣ Related to children’s cognitive
development♣ No temporal adverbs until they
develop a sense of time (tomorrow, last week)
STAGES OF ACQUISITION OF GRAMMATICAL MORPHEMES
Roger Brown et al. (1973) did a longitudinal study of three children –Adam, Eve and Sarah
Jill & Peter de Villiers (1973) confirmed it in a cross-sectional study of 21 children
STAGES OF ACQUISITION OF GRAMMATICAL MORPHEMES
Order of acquisition
1. Present progressive
2. Plural
3. Irregular past forms
4. Possessive
5. Copula
STAGES OF ACQUISITION OF GRAMMATICAL MORPHEMES
♣6. Articles ♣7. Regular past ♣8. Third person singular simple present ♣9. Auxiliary
EARLY SENTENCE PRODUCTION
When?
DEVELOPMENT OF SENTENCE PRODUCTION
STAGE I
Example Communicative Intent
DEVELOPMENT OF SENTENCE PRODUCTION
STAGE II
Form Example
DEVELOPMENT OF SENTENCE PRODUCTION
STAGE IIIForm Example
DEVELOPMENT OF SENTENCE PRODUCTION
STAGE IVForm Example
DEVELOPMENT OF SENTENCE PRODUCTION
STAGE VForm Example
CRITIC
AL PERIO
D
HYPOTH
ESIS
DR
. C
OM
F OR
T P
RA
T T
CRITICAL PERIOD HYPOTHESIS
Lenneberg
Some experiments:
Victor
Genie
CRITICAL PERIOD HYPOTHESIS
CRITICAL PERIOD HYPOTHESIS
THE END
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