Dev of Language + Symbol Use (ch. 6) Flashcards
Symbols
System for representing our thoughts, feelings, and knowledge by communicating them to others
- use fo this frees us from the present
Language Comprehension
Understanding what others say (or write or sign)
Language Production
The process of speaking (or signing/writing)
Generative
A system in which a finite set of words can be combined to generate an infinite number of sentences, thus expressing infinite ideas
Phonemes
smallest units of meaningful sound
(rake and lake differ by “r” and “l” and have diff meanings)
Syntax
Rules specifying how words from diff categories (nouns, verbs, etc) can be combined
(in English, the order of the words in a sentence is crucial)
Morphemes
Smallest units of meaning in a language (dog vs dogs –> 1 morpheme vs 2 morphemes)
Pragmatics
Knowledge about how language is used in specific cultural contexts
Lang Dev + Human Brain
- This is the key
- language is a species-specific behavior = only humans acquire lang in the normal course of deve
- it’s also species-universal = language learning is achieved by typically developing children across the globe
Brain-language Lateralization
right handed = left hemisphere controls language
- life long signers process sign languages in left-lateralized language centers in the brain, whereas non-signers don’t
- suggests left-hem regions aren’t solely specialized for spoken language
Sensitive period for language dev
- Early years constitute a sensitive period during which languages are learned relatively easily
- after this ends (betw ~5yrs and puberty) language acquisition outcomes become more variable and less successful
- As you get older, more difficult to learn a new language
- suggestion of changes in plasticity for diff ages could be for this proficiency difference
- ALSO, children’s native leang knowledge impinges on 2nd language learning
Exposure to Language (Environment)
-Infants identify speech as something important early on
- Infants prefer human speech over artificial sounds
Infant directed speech
- the distinctive mode of speech used when speaking to infants and toddlers
- greater pitch variability, slower speech, shorter utterances, more repetition and questions
- coupled with exaggerated facial expressions
- draws infants attention to speech, they have a preference for this compared to adult-directed speech
Bilingualism
- evidence shows that being bilingual improves aspects of cognitive function in childhood and beyond
- Can begin prenatally = mothers who spoke two languages with fetus, they have equal preference for them
- bilingual infants attention to speech cues is heightened
Speech Perception (Prosody)
- the characteristic rhythmic and intonation patterns with which a language is spoken
- differences in prosody are responsible for why languages sound so diff from one another
- speech perception involves determining which differences between speech sounds are important and what can be ignored
Categorical perception of speech sounds
Both adults and infants perceive sounds (phonemes) as belonging to categories
Voice onset time (VOT)
the length of time between when air passes through the lips and when the vocal cords start vibrating
Dev changes in speech perception
Infants increasingly hone in on sounds of their native lang, and by 12 mo, can become less sensitive to the differences between nonnative sounds
- at 6 to 8 mos, English-learning infants discriminated between on-English phonemes (Hindi vs Indigenous lang)
- BUT by 10 to 12 mos, they no longer perceived the differences they had detected earlier
Word Segmentation
discovering where words begin and end in fluent speech
- infants appear to be very good at pulling out words from speech
Distributional Properties
in any language, certain sounds are more likely to occur together than are others (remember how infants are skilled in statistical learning)
- infants will listen to repetitions of their name than repetitions of a diff name
Babbling
Begins between 6 + 10 mos, average 7mos
- produce strings of consonant-vowel syllables drawn from a fairly limited set of sounds
- language exposure is a key component to this
- deaf infants exposed to ASL babble with their hands!
- with time, eventually take on the sounds, rhythms, and intonational patterns of the language infants hear
Intersubjectivity + Joint attention
- successful communication requires two interacting partners who share a mutual understanding.
- the foundation of intersubjectivity is joint attention = caregiver follows the baby’s head looking and commenting on whatever the infant looks at
- by 12mos, infants have begun to understand the communicative nature of pointing
Early world recognition
- by 6mos hear ‘mom” or “dad” they turn their head to the image of the appropriate person
- infants understand more words than they can actually produce
- parents think infants know LESS words than they actually do
Rapid word comprehension
Infants become skilled in this with linguistic experience
- 15 most presented a pair of objects and hear one of them labeled; they wait until the entire word is heard to then look at correct object, whereas 24mos looked at correct object after hearing only the first part of its label, just as adults do