Language Development Flashcards
themes of language development
- nature vs. nurture
- sociocultural context
- individual differences
- active child
what is language?
- Non-human animals have complex systems of communication that we can call language
- We share characteristics of communication with non-human animals (ie. Different vocalizations for different meanings, body language, etc.)
what makes human language unique?
symbols and generativity
symbols (vs. signs)
- arbitrarily represent objects, ideas, places, etc.
- Not signs (which share connection with that they represent -> ex. Onomatoepia “beep”)
- Ex. A drawing of a cat is a sign, the word “cat” is a symbol -> it’s not connected to a cat (would make more sense to call cats “meows”, etc.)
- Most of human language is symbolic
generativity
- ability to generate novel ideas that have never been produced before and can be understood by our con-specifics
- Ex. “purple giraffes fly through space on their way to Mars” -> sentence we’ve never heard before, but we can understand it and visualize it
parts of language
- phoneme
- morpheme
- semantics
- syntax
- pragmatics
- metalinguistics
phonemes
- smallest unit of sound recognizable as speech rather than random noise
- Ex. Consonants and vowels
- Each of the words languages have a unique set of phonemes, but not all languages use all phonemes (English has 36)
- Some languages have contrastive phonemes that other languages do not have -> Ex. R vs. L (Japanese doesn’t have this)
infants’ perceptual narrowing and phonemes
- Young infants (younger than 9 months) can discriminate auditorily between many of the world’s phonemes, but this ability disappears due to perceptual narrowing after 9-10 months
- This is also true for discriminating signs from sign language and visual speech on the face
- Perceptual narrowing is not an entirely negative phenomenon -> reduction of sensitivity to irrelevant phonemes leads to specialization in discrimination of native phonemes
- Infants whose narrowing occurs earlier in the first year of life have an improved productive vocabulary a year later (but other infants catch up to them over time)
morpheme
- smallest unit of sound that carries meaning
- What’s the smallest number of phonemes needed to make a morpheme? -> 1
- Ex. “s” -> indicates plural
- Can only break words down into morphemes that are still relevant to the words
- Ex. “hiking” -> 2 morphemes: hike, ing (don’t include hi or king because they’re not relevant to the whole word)
- Ex. “cats” -> 2 morhemes: cat, s
- Ex. “walrus” -> 1
- Ex. Overwhelmingly -> 4: over, whelm, ing, ly
semantics
words
Syntax
- combination of semantics into meaningful phrases
- Syntactical rules differ across all the world’s languages
- Some languages are verb-object (emphasize objects/nouns; kids use more nouns in early childhood language development) -> English: “I built my son a house”, Spanish, Nahuatl
- Most languages, however, are object-verb (emphasize verbs; kids use more verbs in early childhood development)
pragmatics
intonation and body language that can change the meaning of words
metalinguistics
using language to discuss/play with language
infant-directed speech (IDS)
- Most cultures’ IDS is different from that culture’s adult-directed speech
- Different languages have different types of IDS
- Bilingual parents may emphasize the differences in their two languages by exaggerating vowel and consonant differences when speaking IDS
English IDS
- We raise the pitch of our speech
- We have more pitch modulations
- We emphasize nouns more than verbs
- We use very clear vowels (unlike when we’re speaking to each other)
when do children have phonological/sound development?
- Before birth until adolescence
- Babies begin learning sounds of native language in utero
- Learn to differentiate (perceive) sounds of native language
- Much perceptual phonological development complete by 10 months
- Learn to produce sounds of native language (6 months – adolescence)
when do children have semantic development?
- Begins at birth, lasts throughout entire lifespan
- Very high rates of acquisition after 10 months through early school age (2 “bursts” of language development)
- Requires segmentation of speech (statistical learning)
- In English, semantic development consists mostly of nouns
when do children have morphemic development?
- Begins around pre-school age (after 2nd birthday)
- Engage in overregularization (overapplying morphemic rules to irregular nouns and verbs)
when do children have syntactic development?
- After 1 year to adolescence
- Sentences (simple combinations of words) emerge by the end of the second year of life (after age 1)
- Telegraphic speech: two-word utterances (“more juice”)
- Four-word sentences may emerge by 2 ½ (or later) and sentences may become more complex
- Development continues through adolescence
theories of language development
- behaviourist account
- nativist account
- connectionist account
- social interactionist account
behaviourist account
- Caregivers support language learning through reinforcement or punishment (operant conditioning)
- Parents correct children when they make mistakes and reward them when they’re correct
- For this to be true, parents would need to consistently reward/punish language, which is untrue
- Even parents who consistently correct don’t have that much of an influence