Cognitive development
Piaget’s stages of cognitive development emphasize the impact of a child’s increasing ability to think in terms of schemas.
Schemas = ways of interacting with objects in the world and ideas about those objects.
Accommodation = when new information causes children to modify their schemas.
Piaget accomodation
when new information causes children to modify their schemas.
Paiget’s schemas
think= mental categories
Sensorimotor
Stage 1
Sensorimotor
Age: 0–2
Characteristics
No schemas; the contents of infants’ thoughts are related exclusively to their current sensations; out-of- sight, out-of-mind.
Related concepts
Object permanence: After ~8 months, infants begin to understand that an object does not cease to exist when out-of-sight.
Preoperational
Stage 2
Preoperational
Age: 2–7
Characteristics-
Child learns to use language and ideas/schemas to represent objects in the world but cannot yet relate these ideas to one another.
EGOCENTRIC= kids are super egocntric self centered, tjey maintain an egocentric world view adn have difficuty taking the persepctive of otehrs!
Related concepts-
Conservation: A child may not understand that matter is conserved when it is moved into big or small containers.
Conservation definition= Before a certain age, two kids want glass of milk can pour into two glasses and say look now we have twice as much and
they will not blink becuase they do not understand conservation of matter! an older kid could get on bard of sharing the choclate milk becuase they will
know it is less chocolate milk usually by age of 5 or so kids do NOT make conservation errors they understand that if you pour the
chocolate milk into two glasses they wil be getting half, understanding conservation of matter!
SAY STOPS AT AGE 5***
Concrete Operational
Concrete Operational
Age: 7-12
Characteristics-
Children learn to think logically about representations of concrete objects but not abstract ideas.
Related Concepts-
No more conservation errors.
inductive reasoning is developed, kids become more lgoical in concrete thinking. deductive reasonign the reverse is not developed yet. They now understand conservation= quantiity remains the same despite changes in its shape or container
Formal Operational
Formal Operational
Age: 12+
Characteristics-
Adolescents can think logically about both concrete and abstract representations.
Related concepts-
Can now think about hypothetical situations.
Theory of mind
Refers to a child’s developing capacity for social cognition—for understanding the motivation for his own behavior and intuiting others’ mental states.
Theory of mind 2
all of this is called theory o fmind, the basis for understanding other people’s point of view. ohter people have a point of view and trying to figure out
what it might be
Cultural influences shape which skills a child learns and how fast she learns them.
Examples:
Zone of proximal development
= refers to the range of cognitive accomplishments that are within reach for a child but that cannot be achieved without guidance from an adult.
-different cultures have different styles of monitoring a child’s progress and frustration and teaching accordingly.
Parenting styles
Parenting styles: can influence cognitive and social development; four types:
Authoritarian: highly demanding and controlling of children’s behavior; not very responsive to their needs.
Permissive: not very demanding/controlling but highly responsive; few rules.
Authoritative: highly demanding/controlling but also highly responsive to children’s opinions and requests.
Disengaged: undemanding, few rules, but also unresponsive; overwhelmed.
Nature versus nurture fallacy:
Nature versus nurture fallacy: Cognitive development and intelligence are always influenced by genetics (heredity), environmental factors, and interactions between the two.
cannot separate the two, always a combination
Heredity
Studies suggest that intelligence—especially fluid intelligence—is strongly influenced by genetics.
Twin studies: compare IQ scores for identical (monozygotic) twins and fraternal (dizygotic) twins.
-Both types of twins share similar environments but identical twins share 100% of their DNA vs. 50% for fraternal twins; IQ scores are much more similar in identical twins.
Adoption studies: compare IQ scores for identical twins who were adopted by different families vs. twins who grew up together with their biological parents.
-IQ scores are still closely related whether or not the twins grew up together.
cognitive changes in late adulthood
Sensory decline (e.g., speed and accuracy in identifying spoken words or letters on an optometrist’s chart) occurs relatively late in life (70+) but can occur rapidly thereafter.
Crystallized intelligence—knowledge accumulated over a lifetime—usually does not decline with age.
Fluid intelligence—strategies for solving novel problems—declines steadily beginning around age 30.
Sensory decline
Sensory decline (e.g., speed and accuracy in identifying spoken words or letters on an optometrist’s chart) occurs relatively late in life (70+) but can occur rapidly thereafter.
Crystallized intelligence
Crystallized intelligence—knowledge accumulated over a lifetime—usually does not decline with age.
“crystallized form” not going anywhere
Fluid intelligence
Fluid intelligence—strategies for solving novel problems—declines steadily beginning around age 30.
selective attention
• Attending to some inputs and not others can involve at least two processes:
Orienting: selects for particular sensory inputs by physically adjusting the sensory machinery, e.g., turning your head or rolling your eyes toward the source of a loud bang.
Priming: selects for particular inputs through mental adjustments of how the mind perceives; can be bottom-up or top-down.
bottom up priming
priming someone tells you list of words whiskers, milk etc then given visual scene to look at and asked to find the cat, you will be
primed* to pick up the cats- THINK HOLT THRASHER****
top-down priming= expecting to see the most beautiful watermellons at the supermarket in your life, you will pay more attention to the
water mellons*
top-down priming
Top-down priming: driven by expectations and usually conscious and intentional.
If you are expecting to see an image of a cat, you will locate it more quickly in a complex visual scene, but this comes with a cost—you may be slower to locate an image of a car.
Spatial priming: an example of top-down priming; you can attend to a particular location in space and you will be faster to respond when a change occurs in that location.
Divided attention
Simultaneously attending to two aspects of visual scene comes with a cost:
•
•
Feature selection vs. conjunction selection: e.g., If you are shown a series of images containing many colored horizontal or vertical lines, it is easier to attend to just one feature (orientation: “respond when you see a vertical line”) than to a conjunction of features (orientation and color: “respond when you see a vertical line that is also red”).
Feature selection feels effortless and occurs just as quickly when there are 100 lines as when there are just four lines.
Conjunction selection is effortful and performance declines when there are more items to attend to.
Many studies have documented the costs of divided attention.
• Examples: Laws against texting and cell phone use while driving were motivated by studies that showed drivers were slower to respond when they were simultaneously attending to a conversation.
Divided attention 2
in grammer conjunctions are linker words like and, so for conjeunction task
you are asked to find shapes that are RED AND X, so as soon has have to sort for two things
we are MUHC MUCH Slower, as soon as two critera get much slower*
this has morphed into research on why we are terrible at multitasking* like driving
and talking on a cell phone, very bad at divided attention* b/c we have to do two things*
Feature selection vs. conjunction selection: e.g., If you are shown a series of images containing many colored horizontal or vertical lines, it is easier to attend to just one feature (orientation: “respond when you see a vertical line”) than to a conjunction of features (orientation and color: “respond when you see a vertical line that is also red”).
Feature selection feels effortless and occurs just as quickly when there are 100 lines as when there are just four lines.
Conjunction selection is effortful and performance declines when there are more items to attend to.
Kinds of problems
Well-defined problems: The goal is clear and so are the options that are available for accomplishing that goal. • E.g., solving an anagram.
no ambiguiuty
Impediments to problem solving: