-
Piaget's theories of development
- -constructivist: knowledge and meaning are generated from an interaction between experiences and ideas (experiencing things is how we learn)
- -children: 1) are active 2) learn lessons on their own 3) are intrinsically motivated to learn
-
adaptation
the tendency to respond to the demands of the environment to meet one’s goals
-
Organization
the tendency to integrate particular observations into coherent knowledge
-
Assimilation
the process by which people translate incoming information into a form they can understand
-
Accommodation
the process by which people adapt current knowledge structures in response to new experiences
-
Equilibration
the process by which people balance assimilation and accommodation to create stable understanding
-
There are Four Stages of Piaget’s Cognitive Development
- 1) sensorimotor: 0-2
- 2) preoperational: 2-7
- 3) concrete operational: 7-12
- 4) formal operational: 12+
-
Sensorimotor
- includes:
- -object permanence: happens at 4-8 mo; when babies know objects still exist even though they not visible
- -A-Not-B error happens during this stage, at about 8-12 mo; babies reach for objects where they've been found before, not where they're last hidden
- -deferred imitation is the first sign that babies have enduring memories; happens at 18-24 mo; is when they repeat behaviors a substational amount of time after they've observed the behavior
-
preoperational (2-7)
'mix of both impressive cognitive acquisitions AND limitations'
- acquisitions:
- -symbolic representation: using one object to stand for another
- limitations:
- -egocentrism: seeing the world only from one's own perspective (the 3 mountain task)
- -centration: tendency to focus on a single, striking feature of an object (ex. the balance scale)
- -children in this stage LACK the conservation concept: the idea that changing the appearance of objects doesn't change their properties (tested using glasses of liquid, playdough & coins in a row [spread out or closer together])
-
concrete operations (7-12)
- -children reason logically about the world
- -understand the conservation problems, but reasoning is limited to concrete situations
- -still have difficulty thinking systematically
-
Inhelder and Piaget’s Pendulum Problem
- -children below the age of 12 usually CANNOT do it
- -task: compare the motion of a pendulum depending on string length and the weight attached; the way they decide is usually faulty
-
Formal Operations (12+)
- -here, cognitive ability is 'developed' when you can think abstractly and reason hypothetically
- -in this stage individuals can
- 1) imagine alternate worlds
- 2) reason systematically
- -attainment of this stage is not universal!
-
Weaknesses of Piaget's Theory
- 1) children don't think as consistantly as the the stage model makes the out to
- 2) BUT infants & young children are more competent cognitively than Piaget thought
- 3) his theory understates the contribution of the social world to development
- 4) it doesn't outline specifics about the cognitive processes that give rise to thinking and the mechanisms that produce cognitive growth
-
Information-Processing Theories
- supports the view that children undergo continuous cognitive change
- -continuous:
- 1) changes occur constantly (are not restricted to special transition periods between stages like with Piaget)
- 2) Cognitive growth happens in small increments not abrupt changes
- 1) precisely defines the processes involved in children’s thinking
- -Task analysis: how information-processing researchers
- understand/predict children’s behavior
2) thinking is a process that occurs over time
3) there's an emphasis on structure & processes (s & p?)
-
Limited-Capacity Processing System
- -in information processing theories, this is how the child is viewed
- -the child is a computation system
- Cognitive development happens when children gradually overcome processing limitations by:
- -using basic processes more efficiently
- -have a better memory capacity
- -use new strategies
- -have more knowledge
-
The Child is a Problem Solver
- -also a tennant of information processing theories
- -children are viewed as active problem solvers
- -problem solving: involves a goal, perceived obstacle, and a strategy or rule.
- -children’s cognitive flexibility helps them pursue goals
-
what makes information-processing theories unique?
- -their emphasis on precise descriptions of how change occurs
- -main idea is to reconcile the influence of nature vs. nurture on development
-
Memory System Components (3)
1) Sensory memory: the immediate perception of sights, sounds, and other sensations that just enter the cognitive system; they're briefly held in raw form until identified; a moderate amount of information can be held for a fraction of a second; its capacity stays constant over development
2) Working memory: a workspace in which information from the environment and relevant knowledge are brought together, given attention and actively processed; is limited in capacity & duration; its capacity & speed of operation increases greatly over childhood & into adolescence
3) Long-term memory: information retained on an enduring basis; can retain an unlimited amount of information forever; its capacity increases enormously over development
-
basic processes
- the simplest and most frequently used mental activities:
- -associating events with one another
- -recognizing objects as familiar
- -recalling facts and procedures
- -generalizing from one instance to another
-
encoding
allows the perceived item of interest to be converted into a construct that can be stored within the brain and recalled later from short or long term memory
the process of representing in memory information specific features of objects and events
-
Sources (3) of Learning & Memory Development
- 1) processing speed: the speed that children
- execute basic processes increases over the course of childhood; biological maturation & experience
- contribute to increased processing speed; especially myelination and increased connectivity among brain regions are 2 processes that decrease processing speed
2) mental strategies: emerge between ages 5 & 8; eg. rehearsal and selective attention
3) content knowledge:
-
mental strategies (2)
rehearsal: process of repeating information over and over to aid memory
selective attention: process of intentionally focusing on information that's most relevant to the current goal
-
autobiographical memory
important type of content knowledge; it's knowledge of the events of one’s life
-
infantile amnesia
the phenomenon that most adults remember nothing that occurred before the age of three years
-this type of amnesia probably ends because of verbal encoding, conversations with parents, and physiological maturation
-
overlapping-waves theory
- children solve problems using a variety of approaches

-
planning
- -contributes to successful problem-solving; children begin to form simple plans by their first birthday
- -as children get older, making a variety of plans helps them solve a a broader range of problems
-frontal lobe (inhibition) is important for planning but is one of the last parts of the brain to mature; young children tend to be over-optimistic & incorrectly believe they can succeed without planning
-
analogical reasoning
reasoning that applies between specific objects or cases, where what's known about one thing is used to infer new information about a different thing; the basic intuition behind analogical reasoning isthat when there are substantial parallels across different situations, there are likely to be further parallels
-
Ramani and Siegler: Information-Processing Analysis Applied to Numerical Understanding
- -kids either played color or number board game for 2 weeks
- conclusion: numerical board games are a good way to improve the numerical knowledge of low-income preschoolers before they begin formal education
-
Core-Knowledge Theories
- -believe infants’ and young children’s think sophisticatedly in areas that are evolutionarily important throughout history
- -depict children as active learners, striving to solve problems and to organize understandings into coherent wholes
- -DIFFERENCE: core-knowledge theorists think children enter the world with specialized learning abilities that allow them to quickly/easily acquire information of evolutionary importance
-
evidence for specialized learning abilities:
- 1) face perception: from birth onward, infants prefer faces to objects
- 2) language: universality of language acquisition; left hemisphere appears to be attuned for language
-
Domain Specificity
the idea that basic understanding are domain-specific, i.e. limited to a particular area, such as living things or inanimate objects; theory proposed by core-knowledge theorists
-
Naive Theories
- -infants begin life with a primitive theory of physics.
- -the first theories of psychology and biology may emerge at about 18 months & three years of age, respectively
-
personification
young children’s extrapolation from what they know about people to predict the qualities of other animals; is important to address in correcting some misconceptions in children’s early biological understanding
-
Sociocultural Theories
-focus on the contribution of other people and the surrounding culture to children’s development
- -guided participation: more knowledgeable
- people help less knowledgeable ones engage in activities
- they wouldn’t be able to manage on their own
-Vygotsky originated the approach to cognitive development; his views differ greatly from piaget
-
private speech
children develop their self-regulation and problem-solving abilities by telling themselves what to do; the second phase of Vygotsky’s internalization-of-thought process
-
Tomasello: Humans have 2 crucial unique characteristics
- 1) the inclination to teach others
- 2) the inclination to attend to and learn from such teaching
-
intersubjectivity
the mutual understanding that people share during communication
-joint attention: a process by which social partners intentionally focus on a common referent in the external environment
-
Social scaffolding
a process through which more competent people provide a temporary framework that supports children’s thinking at a higher level than children could manage on their own
-the quality of scaffolding that people provide tends to increase as people age & gain experience
-important when forming autobiographical memories; sometimes parents push kids to remember more details
-
Dynamic Systems Theories
- -theories that focus on how change occurs over time in complex systems
- -at ALL points in develoment, thought and action change from moment to moment in response to the child’s current situation & past
- -children acquire skills at different ages & in different ways
- -development entails regression, as well as progress
- -theories are unique in their emphasis on how children’s
- specific actions shape their development
-
Dynamic-Systems Theories Sample from the Other Theories
- -Emphasizes children’s innate motivations to explore
- the environment (Piaget)
- -Emphasize precise analysis of problem-solving activity (information-processing)
- -Emphasize early emerging competencies (core-
- knowledge)
- -Emphasize the formative influence of other people
- (sociocultural)
-
self-organization
bringing together and integrating components as needed to adapt to a continuously changing environment
- - dynamic-systems theories see development as a process of self-organization
- -sometimes called soft organization: b/c components and their organization are subject to change
-
How Change Occurs:
Variation: different behaviors being generated to produce the same goal
Selection: an increasing choice of behaviors that are effective in meeting goals and a decreasing choice of less effective behaviors
-
-
Sensation
processing of basic information from the external world by the sensory receptors in the sense organs and brain
-
Perception
the process of organizing and interpreting sensory information
-
research method to study infants' vision
1) preferential-looking technique: involves showing infants two patterns or two objects at a time to see if the infants have a preference for one over the other
- 2) habituation: involves repeatedly presenting an infant
- with a given stimulus until the response declines
-
By 8 months (think barcode):
the sharpness of infants' visual discrimination approaches that of adults; is fully developed by 6 years of age
-
young infants prefer patterns of:
high visual contrast; this is because they have poor contrast sensitivity (ability to detect differences in light and dark areas)
-
very young infants have limited:
color vision; but by 2-3 months their color vision is similar to that of adults
-
Visual Scanning and Tracking
- Scanning: 1-month-olds scan the perimeters
- of shapes ---- 2-month-olds scan both the perimeters & the interiors of shapes.
Tracking: although infants begin scanning the environment right away, they cannot track even slowly moving objects smoothly unt il 2 to 3 months of age
-
skip ahead to chp 6 packet
almost over
-
language comprehension
understanding what others say or sign or write; ex. a child who can understand his parents words but not speak yet
-
language production
only when a child speaks (not just understands) languages is she producing language
-
style
the strategies young children use when beginning to speak; individual difference in style appear to have no long-term effects on children's ultimate language abilities
-
phonological development
the learning of a sound system of a language
-
collective monologues
young children's talk with one another that often involves a serious of unrelated statements; common between preschoolers
-
modularity hypothesis
the argument that the human brain contains an innate, self-contained language component seperate from other aspect of cognitive funcitoning; supported by the fact that all humans exposed to language successfulyl acquire it, whereas no other animals do
-
pragmatic development
learning knowledge about how language is used; ex. knowing that culturally, ships are considered female in the English language
-
dual representation
the notion that the use of a symbolic artifact requires mentally representing it both as a real object and as a symbol for something other than itself; ex. for a map, this involves understanding it's a tangible piece of paper with line & colors and an understanding that lines and colors represent roads, water, mountians, etc.
-
categorical perception
the perception of speech sounds as belonging to discrete categories; infants do categorical perception for speech sounds they've never heard before --- means it's innate/independent of experience
-
voice onset time
the length of time between when air passes through the lips and when the vocal cords start vibrating; /Hb/ & /E/ differ only in voice onset time???
-
connectionism
type of information-processing approach that emphasizes the simultaneous activity of numerous interconnected (processing) units; researchers taking this approach have developed computer simulations of language acquisition
-
holophrastic period
the stage in which infants use one word at a time; ex. a child who uses 'nap nap' to say they want to take a nap is probz in this period
-
generativity
the notion that we can put together an infinite number of sentences to express an infnite number of ideas using the finite set or words in our vocabulary; as a result, it is possible to form a sentence that has never been uttered by anyone else on earth
-
telegraphic (speech)
child's first sentences; are usually 2-word utterances; these sentences omit nonessential elements, such as word endings and function words
-
semantic development
the learning of the system for expressing meaning in language
-
narratives
descriptions of past events that have the basic structure of a story
-
syntactic development
the learning of grammar of a language
-
metalinguistic knowledge
the understanding of properties and function of language; ex. knowing all languages have words, and that sentences are made up of words
-
Perceptual constancy
the perception of objects as being of constant size, shape, color, etc., in spite of physical differences in the retinal image of the object
-
Stereopsis
the process by which the visual cortex combines the differing neural signals sent to the brain by the two eyes; emerges at 4 months of ageq
-
monocular or pictorial cues
cues of depth that can be achieved by one eye alone; happens around 6–7 months of age
ex. relative size, interposition
-
Pictorial Representations
infants and toddlers attempt to treat pictures as though they were real objects; have to learn their symbolic nature
-
hearing does not approach adult levels until age:
5 or 6; but is well developed at birth
-
symbols
systems for representing thoughts, feelings, and knowledgable and communicating them to other people; eg. pictures, numbers, models, maps
-
phonemes
the elementary use of meaningful sound that produces language; eg. in English, the words 'cat' and 'hat' differ in only one phoneme
-
expressive style
1st utterances made by children with this style tend to be long "sentences" made up of hardly any recognizable words but uttered with perfect rythm and intonation
-
-
fast mapping
the process of rapidly learning a new word simply from the contrastive use of a familiar and unfamiliar word
-
wait-and-see style
speech strategy that results in children beginning to talk at a comparatively late age
-
distributional properties
-
-
-
critical period for language
-
syntactic bootstrapping
the strategy of using the grammatical structure of a whole sentence to determine the meaning of novel words
-
referential style
universal grammar
-
prereaching movements
clumsy swiping movements by young infants toward the general vicinity of objects they see
-Infants begin successfully reaching for objects at around 3 to 4 months of age
-at 7 months infants can sit on their own and reaching becomes stable
-by 10 months, the way an infant reaches for an object is affected by what they plan to do with it
-
self-locomotion
crawl at 8 mo; walk at 11-12 mo
-
scale errors
chilren try to do something with a miniature replica object that is much too small for the action to be completed
-
differentiation
the extraction from the constantly changing environment those elements that remain stable
-
affordances
the possibilities for action offered by objects and situations and the relation between objects and humans
-
statistical learning
involves picking up information from the environment, forming associations among stimuli that occur in a statistically predictable pattern
-
violation-of-expectancy procedure
where infants are shown an event that should evoke surprise or interest if it violates something that the infant knows or assumes to be true
-shows that infants are able to represent invisible objects better than Piaget thought
-
by 5 years of age children have mastered:
the basic structure of their native language, whether spoken or manually signed
-
required competancies for learning language:
1) phonological development: knowledge about phonemes, the elementary units of sound that distinguish meaning
2) semantic development: learning the system for expressing meaning in a language, beginning with morphemes (smallest unit of meaning in a language)
- 3) syntactic development: learning the syntax or
- rules for combining words
4) pragmatic development: acquiring knowledge of how language is used, which includes understanding a variety of conversational conventions
-
aphasia
impairment of language ability; provides evidence for laterization of language in left hemisphere
- -damage to Broca’s area, near the motor cortex, is associated with difficulties in producing speech
- -damage to Wernicke’s area, which is near the auditory cortex, is linked to difficulties with meaning
-
Infant-directed talk (IDT)
- the distinctive mode of speech that adults adopt when talking to babies
- !!is not universal!!
- -warm and affectionate tone, high pitch, extreme intonation, and slower speech accompanied by exaggerated facial expressions; infants prefer it
-
intersubjectivity
the sharing of a common focus of attention by two or more people
-
Joint attention
established when the baby and the parent are looking at and reacting to the same thing in the world around them
-
prosody
the rhythm, tempo, melody, intonational patterns, and so forth with which a language is spoken
-variations in prosody are responsible for why languages sound different from one another
-
Infants’ ability to discriminate between speech sounds NOT in their native language:
- -declines between 6 and 12 months of age
- -by 10 mo, English-speakers can't discriminate between syllables in Hindi and Nthlakapmx
-
Infants first:
- -recognize words
- -then comprehend them
- -then begin to produce some of the words they learned.
-
babbling
- -sometime between 6 and 10 months of age, infants begin
- to babble
- -key component of the development of babbling is
- receiving feedback about the sounds one is producing
- -silent babbling: babies exposed to the sign language of their deaf parents engage in “silent babbling"
-
problem of reference
after infants begin to recognize recurrent sounds from the speech they hear, they have to start associating words with meanings; this can happen by 6 months
-
Overextension
using a given word in a broader context than is appropriate, represents an effort to communicate despite a limited vocabulary (I still do this)
- -1st word: 10-15 months old
- -vocabulary spurt: 19 months
- -simple sentences: 24 months
-
whole-object assumption
leads children to expect a novel word to refer to a whole object, not a part
-
mutual exclusivity assumption
leads children to expect that a given entity will have only one name
-
Current Theoretical Issues in Language Development:
- 1) Nativist Views: using a language requires a set of abstract, unconscious rules – a universal grammar that is innate and common to all languages; argues that the cognitive abilities that support language development are specific to language
- -CRITICISM: focuses only on syntax not the communicative role of language
- 2) Interactionist Views: language development is influenced by its communicative function
- -CRITICISM: limited attention to syntactic development
3) Connectionist Views: presents language development as the result of the gradual strengthening of connections in the neural network
|
|