Week 8: Language Development Flashcards
(69 cards)
What is critical in the first 1000 days in terms of language development?
Communication, it’s important to keep talking to a baby as it impacts the architecture of their brain - neural connections form rapidly in this period
It’s important how you speak -> don’t just give commands - converse expose the child to words it wouldn’t otherwise have heard
What is the difference between the number of words some children have heard by age 4 compared to others?
By the age of 4 some children have heard 30 million words more than others
Is there a ‘word gap’ between higher and lower income families?
This is an outdated study that said there was a difference in the number of words that children from low income families knew compared to high income families
Critics say this is an outdated study. A new version of the study at MIT was conducted with a lot more participants were they recorded conversations and analyzed MRIs
They found that conversations helps brain development independent of SES I.e. lots of conversations -> lots of development regardless of what background you come from
What are some examples of factors in modern life that are influencing language development?
-Phones -> interrupt face to face interactions
-Prams being faced away from the parent
-How early some children go into preschool
List the components of language… What are each governed by?
*Phonology
*Morphology
*Syntax
*Semantics
*Pragmatics
-> all of these are rule systems
Phonology
The sounds used by the speakers of a particular language
Phonemes
-Subset of Phonology
-The smallest sound unit in a language
* Can affect the meaning of a word e.g. substituting the phoneme
/p/ for /b/ in the word bit changes the meaning of the word.
Morphology
The rule system that governs how words are
formed
How many phonemes are there in the world? How many are used by english?
There are approximately 2000 phonemes in languages around the word
English language only uses about 45 Phonemes
First challenge in learning a language (whether that is in adulthood or childhood) is to learn what phonemes are used. Phonemes are not the same across all languages
Morphemes
A word or a part of a word that cannot be
broken into a smaller meaningful part
- e.g. the word “view” = 1 morpheme BUT the word “review” = 2 morphemes
-e.g Happy = 1 morpheme, Unhappy = 2 morphemes – un and happy, Unhappiness = 3 morphemes – un, happy and ness - These have an important role to play when it comes to grammar e.g. convey past tense with ed, plural with s
Syntax:
Rules specifying how words can be combined to form meaningful
sentences
Semantics
The aspect of language centring on meanings
The bicycle talked the boy into buying a chocolate bar!!!
* Syntactically correct/incorrect?
* Semantically correct/incorrect?
Semantically incorrect but syntactically correct
Pragmatics
The rules for engaging in appropriate and effective communication
Includes things like facial expressions, gestures, turn taking. Pragmatics are the glue that hold conversations together.
The exercise used to demonstrate this in class was to turn our backs to each other and try have a conversation without some of these essential communication cues
Prelinguistic development : What are babies aware of before they start talking? Do they lose any abilities in terms of language as they progress? What can they do from about 6 months?
- Babies acquire a great deal of language specific information before they begin talking.
- Young babies are sensitive to a wider range of phonemes than the ones that exist in their own first language(s)
- By 6-8 months babies begin to STOP paying attention to the sounds that will not assist them with mastering their own native language(s). -> this is an example of pruning
- From 6 months babies begin to detect the internal structure of both sentences and words.
Think of all the terms that are used to describe what is informally known as ‘baby talk’?
-Infant directed speech
-Child directed speech
-Parentese
-Used to be called motherese but that term has gone out of favour
What is infant directed speech or Parentese?
-The term used to describe how adults commonly talk to a baby differently than you would a adult
-Parents across the world do it, it’s a very natural thing that we seem to be able to slip into
What are the features of Infant directed speech or parentese? What is the purpose?
high pitch
short sentences
sing song voice
clear pronunciation
vowels drawn out
animated facial expression
distinct pauses
lots of repetition
All of these things help the baby to learn language faster as they are more interesting for the baby to pay attention to
Brain scans of babies study in relation to parentese
This study investigated what happens in babies’ brains as they listen to “parentese”—the sing-song style of speech adults often use with infants.
It found that babies stay engaged with parentese but lose interest in normal adult speech.
This is because parentese contains a strong, synchronized rhythm that enhances the acoustic landmarks the brain uses to process speech. Interestingly, the babies’ brain activity synchronized with this rhythm.
How does statistics have a place in language development?
From a very young age—even in the first year of life—babies’ brains are like little data analysts. They’re constantly listening to the sounds in the language(s) around them and picking up on patterns. This includes:
Which sounds occur most frequently
(“ba”, “da”, “ma” might come up a lot in English)
Which sounds tend to appear together
(like “pre” often followed by “tty” = “pretty”)
Over time, babies start to:
-Pay more attention to the sounds they hear often – These frequent sounds become more familiar and easier to recognize.
Ignore or “prune” the sounds they rarely hear – If certain sounds don’t show up often (like click sounds in Xhosa or tonal shifts in Mandarin), the brain treats them as less relevant and becomes less sensitive to them
So, in a nutshell:
Babies use statistics to figure out which sounds matter in their language, and their brains rewire accordingly.
What are examples of early sounds in babies? What are their function?
Crying
Burps
Grunts
Sneezes
-> have a role and exercising vocal cords (2 muscles that join and vibrates together)
-> Help the child learn how air flow and different mouth positions effect sounds
Does the development of non-speech sounds happen similarly across cultures? Why is this?
From birth to around 18 months, non-speech sound development follows a similar pattern across all languages.
This early vocal development is influenced by physical changes in the baby’s mouth, throat, and larynx. At birth, babies don’t have much control over these structures, so most of their sounds are reflexive—like crying, grunting, or fussing.
As they grow, the larynx gradually drops and the vocal tract lengthens, giving babies more control over their sound production.
When do babies begin cooing?
-6-8 weeks
-Cooing = soft, vowel-like noises often associated with comfort or pleasure. These coos are different from cries, as they often happen when babies are content or responding to a caregiver’s soothing or happy voice.
-Turn taking can be present from here i.e. parent talks -> cooing -> parent talks -> cooing
When do babies begin producing consonant sounds?
3-4 months