Language Development Flashcards
photo-conversation
a caregiver smiles and speaks to an attentive infant , who smiles and vocalize back to the caregiver
Language Development: Required
Competencies for Learning Language
-phonological development
-semantic development
-syntactic development
-pragmetic development
Phonological
development
- Acquisition of knowledge
about phonemes, the elementary
units of sound that distinguish
meaning
ex; lake and rake
morphemes
the smallest unit of meaning
ex:dog,chairs,unkind
Semantic
development
Learning the system for expressing meaning in a language, beginning
with morphemes, the smallest unit of meaning in a language
Syntactic
development
Learning the
syntax or
rules for
combining
words
Pragmatic
development
Acquiring knowledge of how language is used, which includes understanding
a variety of conversational conventions
ex: irony and metaphors
Language requires biological preparedness
Critical Periods
Evidence of critical
period for language
development
Difficulties feral children
(such as Genie) have in
acquiring language in
adolescence - vocabulary dosnt have critical period)
Comparisons of the effects of
brain damage suffered at
different ages on language
Language capabilities of
bilingual adults who acquired
their second language at
different ages
Test of Critical-period Hypothesis:
Performance on a test of English
grammar by adults originally from
Korea and China was directly related
to the age at which they came to the
United States and were first exposed
to English. What do you see?
as they get older their scores become lower
Acquiring the Native Language
Major Production Milestones
Reduplicated babbling by 8 mos
First words by 10-12 mos
Combining words by 18 mos
Complex clauses and sentences by 2-3 yrs
Comprehension begins much earlier
Respond to name by 4 mos
Recognize common words by 6 mos ex: understand what hand is
** Perceptual Attunement provides the first step**
Phonological Development:
Speech perception: Perceptual attunement
Phonology: Prosody
Prosody
- Includes spoken language characteristics above the phoneme:
rhythm, tempo, cadence, melody, intonational patterns - Accounts for much variation in sound of language within and between cultures (including accents)
- Prosody correlated with word order
- Language specific cues facilitate word and phrase segmentation
- And may support acquisition of grammar
Language
Development:
Comprehension and
Production
Children master basic structure of their native language, whether spoken
or manually signed by age five.
- Language requires comprehension and production.
- Comprehension precedes production.
By the age of 5, children are capable of
generating totally novel sentences that
are correct in terms of the phonology,
semantics, and syntax of their native
language.
They are also able to make
appropriate pragmatic inferences
regarding the content of their
partner’s utterances.
What Is Required for
Language?
A human environment
- Infant-directed talk (IDT)
- Distinctive mode of speech
that adults adopt when talking
to babies and very young
children - Common throughout the world,
but not universal - Includes warm and affectionate
tone, high pitch, extreme
intonation, and slower speech
accompanied by exaggerated
facial expressions - Preferred by infants
But – the imperative to communicate is so strong
- If no language models to learn from
- Hearing children, just like the deaf children, will nvent a language
- But only if there is someone to communicate with!
The Process of Language Acquisition:
Early Word Learning
Early word segmentation & recognition > Infants first recognize words > Then comprehend > them Then begin to produce them