Lecture 3: Piaget and Vygotsky Flashcards
Discontinuities in piagets theory
Hierarchial stages
central properties
Qualitative change
Broad applicability- applies to different examples of the same process
brief transitions
invariant sequence - cannot skip or go back a stage
4 stages of cognitive development
Sensorimotor
Preoperational
Concrete Operational
Formal Operational
Object permanence
The knowledge that objects continue to exist even when they are out of view, typically emerges about 8 months.
A baby will search for a hidden object
Stage 1: Sensorimotor stage
birth to 2 years
Infants get to know the world through their senses and through their actions.
critical cognitive achievements and errors include:
1. object permanence
2. A-Not-B error
3. start to form mental representations. The first being deferred imitation
deferred imitation
the repetition of other people’s behaviour a substantial time after it occurred
A-Not-B error
the tendency to reach to where objects were found before, rather than where they were last hidden until about 12 months
Piagets A-not-B task
This infant has already found the toy under the left cloth(A) on a number of trials.
When the toy is hidden under the cloth on the right (B), the infant returns to location (A)
Suggests that the child mentally represents the object after it has disappeared from view – but this representation is fragile
Stage 2: Pre-operational stage
2-7 years
Toddlers and young children start to rely on internal representations of the world based on language and mental imagery
A mix of impressive cognitive acquisitions and equally impressive limitations
- A notable acquisition is symbolic representation, the use of one object to stand for another, which makes a variety of new behaviours possible
-A major limitation is egocentrism, the tendency to perceive the world solely from one’s own point of view
-Pre-Operational children also make conservation errors, where they incorrectly believe that merely changing the appearance of objects can change their quantity
Symbolic representation
Egocentrism
Piaget and Inhelders (1956) three-mountains task
Conservation (liquid and number)
Procedures used to test conservation
Liquid quantity
Solid quantity
of number
the balance scale
-errors due to centration
Stage 3: Concrete operational stage
7-12 years
Children begin to reason logically about the world
They can solve conservation problems, but their successful reasoning is largely limited to concrete situations
Thinking systematically remains difficult
Pendulum problem
Inhelder and Piagets pendulum problem
The task is to compare the motions of longer and shorter strings, with lighter and heavier weights attached, in order to determine the influence of weight, string length, and dropping point on the time it takes for the pendulum to swing back and forth
Children below age 12 usually perform unsystematic experiments and draw incorrect conclusions
Stage 4- formal operational stage
12+ years
Cognitive development culminates in the ability to think abstractly and to reason hypothetically
Individuals can imagine alternative worlds and reason systematically about all possible outcomes of a situation
Piaget believed that the attainment of the formal operational stage, in contrast to the other stages, is not universal - Instead depends on environment and quality of education, and attainment is more common in industrialised societies
Critique of piagets theory
he stage model depicts children’s thinking as being more consistent than it is (but e.g., conservation of number vs. solid-quantity)
Infants and young children are more cognitively competent than Piaget recognized
Piaget’s theory understates the contribution of the social world to cognitive development (what about the role of other people in the child’s development?)
Piaget’s theory is vague about the cognitive processes that give rise to children’s thinking and about the mechanisms that produce cognitive growth (what are the processes that lead children to think in a particular way? Piaget doesn’t really elaborate…)
Interpreting adult intentions
Light, Buckingham & Robbins (1979)
By providing a clear reason for making the change of glass, many more children pass this version of the task