Piaget - cognitive development Flashcards
Lecture 7 (21 cards)
What is cognition
- How we think about things and understand the world
- Attention, memory, language, logic, problem solving, decision making
Cognitive developmental theory
- How our cognition develop over time
- Focuses on things like memory, problem solving, attention concept formation
- Doesn’t look at social behaviour
Piaget
- Philosopher and biologist
- Interested in origins of knowledge - genetic epistemology
- Studied intellectual development of his own children
- Studied children’s acquisition of knowledge because cognitive change is most pronounced in childhood
Before Piaget
- Developmental processes aren’t scientifically examined
2 .Miller - surprising features of children’s thinking, physics (object permanence), numbers (with preschoolers, the more spread out a number of things the more there are), liquid quantity, morality, psychology (children don’t realise what they know isn’t known by everyone else)
Structure of cognitions
- As we develop, we acquire cognitive structures
- Cognitive structures - mental representations or rules we use to understand the world, how we solve problems
- Representations of reality
- Structures are how we organise and interpret our experiences
- Mental schemata
- concepts
Schemata
- Schema - a mental representation of an action which includes the knowledge and experience we have acquired relating to the action
- E.g. reflexes are the only schema available from birth
Concepts
Rules that describe the properties of environmental events and how they relate to other concepts
How do we learn mental structures
- Assimilation - when a schema is adapted to other objects but is not changed
2 .Equilibrium - process of adapting schemata without any real change - Disequilibrium - coming across an object for which the existing schema is a poor fit, creating a state of disequilibrium
- Accommodation - process of changing an existing schema
- Equilibration - back and forth between disequilibrium and accommodation
Piaget’s theory of cognitive development stages
- Sensorimotor - birth to 2 years, discovery of relations between sensation and motor behaviour
- Preoperational - 2 to 7 years, use of symbols to represent objects internally, especially through language
- Concrete operations - 7 to 11 years, mastery of logic and development of rational thinking
- Formal operations - 11 onwards, development of abstract thinking and hypothetical reasoning
Piaget’s theory - key claims
- Each new stage derives from and improves upon the previous stage
- Invariant sequence
- Stages are universal
Sensorimotor period
- Children’s thinking is on a physical level
- Development of familiarity with objects through senses and own motor actions
- Major characteristics - object permanence develops (object continues to exist even if its not visible)
Preoperational thought
- Thinking separates from movement
- Thinking capacity increases greatly in speed
- Children acquire verbal skills
- Evidence of thinking abstractly
- Children are egocentric
6.Centration - focusing on salient aspect of a situation
Features:
Symbolism - more symbolic thought
Egocentrism - child is unable to appreciate other people’s perspectives
Centration - exclusive focus on one salient aspect of a problem
Lack of reversibility - can’t grasp that the effects of events are reversed when the process is reversed
Concrete operations
- Logical thinking
Increasingly flexible thinking - Child is able to infer other mental states
- Child begins to grasp abstract concepts
- Understanding of conservation develops
- Conservation - a recognition that some properties of objects remain fundamentally unchanged even if there are external perceptual changes in appearance
- Three ways conservation happens:
Compensation
Reversibility
Identity - By understanding the logic or testing out, the child comes to understand conservation
Formal operations
- Endpoint in terms of development of structure
2 Formal, abstract and rational thought - Hypothetical thinking
- Use of metaphors and analogies
- Exploring beliefs, values, philosophies
- “Operations on operations”
Theory of development
- Theory is constructivist
- Structuralist - organisation of functions and behaviour is important
- Stage based
- Charts adaptation to environment
- Information is either assimilated or accommodated to schemes
- Goal is equilibrium
Debate and controversy - methodological concerns
- Case studies
- Natural observations - experimenter adapts to child’s responses
- Inconsistency in questions
- Notes taken by experimenter during process - bias
debate and controversy - criticisms
- Under estimation of ages - piaget said object permanence from 8 months, Baillargeon et al found from 5 months
- Baillargeon, Spelke and Wasserman - infants habituated to a screen moving 180 degrees, then showed a possible event or an impossible event, possible event was that the bridge stopped at box and returned, impossible event was bridge kept going to 180 degree turn, results were 5 month old infants surprised with impossible event, understood solid object that is continues to exist
debate and controversy - conservation criticisms
- Gelman - conservation is actually perceptual seduction
- Experimental procedure - 3 yr olds, conservation of number task, two lines of toy turtles each covered by the experimenter in turn, one line is made longer, correct answer still given
- Rose and Blank - argued Piaget’s method of questioning may be misleading, and will impact age
Debate and controversy - criticisms of stage theories
- Individual differences
- Vygotsky - importance of instruction and culture
3.. Difficult to assess how each stage derives from previous - Ethnocentric
- Development beyond adolescence
- Social contexts
Impact and legacy - scientific impact
- Highlighted need for studying children’s cognitive development
- Emphasises constructivism - children contribute to their own development
- Instigated research in developmental psychology, moral reasoning
impact and legacy - applied impact
- Contributions to education and child centred approaches, peer interaction
- Used extensively today - development of children’s moral reasoning, speciesism and children’s development