Piaget's theory of cognitive development is a comprehensive theory about
the nature and development of human intelligence
first developed by Jean Piaget. It is primarily known as a developmental stage theory, but in fact,
it deals with the nature of knowledge itself and how humans come gradually to
acquire, construct, and use it. To Piaget, cognitive development was a
progressive reorganization of mental processes as a result of biological
maturation and environmental experience. Children construct an understanding of
the world around them, then experience discrepancies between what they already
know and what they discover in their environment. Moreover, Piaget claims the
idea that cognitive development is at the center of human organism and language
is contingent on cognitive development. Below, there is first a short
description of Piaget's views about the nature of intelligence and then a
description of the stages through which it develops until maturity.
NATURE OF
INTELLIGENCE: OPERATIVE AND FIGURATIVE INTELLIGENCE
Piaget
believed that reality is a dynamic system of continuous change, and as such is
defined in reference to the two conditions that define dynamic systems.
Specifically, he argued that reality involves transformations and states.
Transformations refer to all manners of changes that a thing or person can
undergo. States refer to the conditions or the appearances in which things or
persons can be found between transformations. For example, there might be
changes in shape or form (for instance, liquids are reshaped as they are
transferred from one vessel to another, humans change in their characteristics
as they grow older), in size (e.g., a series of coins on a table might be
placed close to each other or far apart) in placement or location in space and
time (e.g., various objects or persons might be found at one place at one time
and at a different place at another time). Thus, Piaget argued, that if human
intelligence is to be adaptive, it must have functions to represent both the
transformational and the static aspects of reality. He proposed that operative
intelligence is responsible for the representation and manipulation of the
dynamic or transformational aspects of reality and that figurative intelligence
is responsible for the representation of the static aspects of reality.
Operative
intelligence is the active aspect of intelligence. It involves all actions,
overt or covert, undertaken in order to follow, recover, or anticipate the
transformations of the objects or persons of interest. Figurative intelligence
is the more or less static aspect of intelligence, involving all means of
representation used to retain in mind the states (i.e., successive forms,
shapes, or locations) that intervene between transformations. That is, it
involves perception, imitation, mental imagery, drawing, and language.
Therefore, the figurative aspects of intelligence derive their meaning from the
operative aspects of intelligence, because states cannot exist independently of
the transformations that interconnect them. Piaget believed that the figurative
or the representational aspects of intelligence are subservient to its
operative and dynamic aspects, and therefore, that understanding essentially
derives from the operative aspect of intelligence.
At any time,
operative intelligence frames how the world is understood and it changes if
understanding is not successful. Piaget believed that this process of
understanding and change involves two basic functions: Assimilation and
accommodation.
ASSIMILATION AND
ACCOMMODATION
Through
studying the field of education Piaget focused on accommodation and
assimilation. Assimilation, one of two processes coined by Jean Piaget,
describes how humans perceive and adapt to new information. It is the process
of taking one’s environment and new information and fitting it into
pre-existing cognitive schemas. Assimilation occurs when humans are faced with
new or unfamiliar information and refer to previously learned information in
order to make sense of it. Accommodation, unlike assimilation is the process of
taking one's environment and new information, and altering one's pre-existing
schemas in order to fit in the new information. Through a series of stages,
Piaget explains the ways in which characteristics are constructed that lead to
specific types of thinking; this chart is called Cognitive Development. To
Piaget, assimilation is integrating external elements into structures of lives
or environments or those we could have through experience. It is through
assimilation that accommodation is derived. Accommodation is imperative because
it is how people will continue to interpret new concepts, schemas, frameworks, etc.
Assimilation is different from
accommodation because of how it relates to the inner organism due to the
environment. Piaget believes that the human brain has been programmed through
evolution to bring equilibrium, and to move upwards in a process to equilibrate
what is not. The equilibrium is what Piaget believes ultimately influences
structures because of the internal and external processes through assimilation
and accommodation.
Piaget's
understanding is that these two functions cannot exist without the other. To
assimilate an object into an existing mental schema, one first needs to take
into account or accommodate to the particularities of this object to a certain
extent; for instance, to recognize (assimilate) an apple as an apple one needs
first to focus (accommodate) on the contour of this object. To do this one
needs to roughly recognize the size of the object. Development increases the balance
or equilibration between these two functions. When in balance with each other,
assimilation and accommodation generate mental schemas of the operative
intelligence. When one function dominates over the other, they generate
representations which belong to figurative intelligence.
SENSORIMOTOR STAGE
The sensorimotor stage is the first of the
four stages in cognitive development which "extends from birth to the
acquisition of language"."In this stage, infants construct an
understanding of the world by coordinating experiences (such as seeing and
hearing) with physical, motoric actions. Infants gain knowledge of the world
from the physical actions they perform on it. An infant progresses from
reflexive, instinctual action at birth to the beginning of symbolic thought
toward the end of the stage. Piaget divided the sensorimotor stage into six
sub-stages":from birth until the age of two, infants have only senses:
vision, hearing, and motor skills, such as grasping, sucking, and stepping.
The first
stage is called the Sensorimotor stage (birth to about age 2). In this stage
knowledge of the world is limited (but developing) because it’s based on
physical interactions/experiences. The child learns that he is separate from
his environment and that aspects of his environment continue to exist even
though they may be outside the reach of his senses. Behaviors are limited to
simple motor responses caused by sensory stimuli. In this stage according to Piaget,
the development of object permanence is one of the most important
accomplishments at the sensorimotor stage. (Object permanence is a child’s
understanding that objects continue to exist even though they cannot be seen or
heard).
Sub-Stage
|
Age
|
Description
|
1 Simple Reflexes
|
Birth-6 weeks
|
"Coordination of sensation
and action through reflexive behaviors".Three primary reflexes are
described by Piaget: sucking of objects in the mouth, following moving or
interesting objects with the eyes, and closing of the hand when an object
makes contact with the palm (palmar
grasp). Over the first six weeks of life, these reflexes begin to
become voluntary actions; for example, the palmar reflex becomes intentional
grasping.).
|
2 First habits and primary circular reactions phase
|
6 weeks-4 months
|
"Coordination of sensation
and two types of schemes: habits (reflex) and primary circular reactions
(reproduction of an event that initially occurred by chance). Main focus is
still on the infant's body." As an example of this type of reaction, an
infant might repeat the motion of passing their hand before their face. Also
at this phase, passive reactions, caused by classical or operant conditioning, can begin.
|
3 Secondary circular reactions phase
|
4–8 months
|
Development of habits. "Infants become more
object-oriented, moving beyond self-preoccupation; repeat actions that bring
interesting or pleasurable results." This stage is associated primarily
with the development of coordination between vision and prehension.
Three new abilities occur at this stage: intentional grasping for a desired
object, secondary circular reactions, and differentiations between ends and
means. At this stage, infants will intentionally grasp the air in the
direction of a desired object, often to the amusement of friends and family.
Secondary circular reactions, or the repetition of an action involving an
external object begin; for example, moving a switch to turn on a light
repeatedly. The differentiation between means and ends also occurs. This is
perhaps one of the most important stages of a child's growth as it signifies
the dawn of logic.
|
4 Coordination of secondary circular reactions stages
|
8–12 months
|
"Coordination of vision
and touch--hand-eye coordination; coordination of schemes and intentionality."
This stage is associated primarily with the development of logic and the
coordination between means and ends. This is an extremely important stage of
development, holding what Piaget calls the "first proper intelligence." Also, this stage
marks the beginning of goal orientation, the deliberate planning of
steps to meet an objective.
|
5 Tertiary circular reactions, novelty, and curiosity
|
12–18 months
|
"Infants become intrigued
by the many properties of objects and by the many things they can make happen
to objects; they experiment with new behavior." This stage is associated
primarily with the discovery of new means to meet goals. Piaget describes the
child at this juncture as the "young scientist," conducting
pseudo-experiments to discover new methods of meeting challenges.
|
6 Internalization of Schemes
|
18–24 months
|
"Infants develop the
ability to use primitive symbols and form enduring mental representations."
This stage is associated primarily with the beginnings of insight,
or true creativity.
This marks the passage into the preoperational stage.
|
By the end
of the sensorimotor period, objects are both separate from the self and
permanent. Object permanence is the understanding that
objects continue to exist even when they cannot be seen, heard, or touched.
Acquiring the sense of object permanence is one of the infant's most important
accomplishments, according to Piaget.
PREOPERATIONAL STAGE
Piaget's
second stage, the Pre-operational Stage, starts when the child begins to learn
to speak at age 2 and lasts up until the age of 7. During the Pre-operational
Stage of cognitive development, Piaget noted that children do not yet
understand concrete logic and cannot mentally manipulate information.
Children’s increase in playing and pretending takes place in this stage,
however the child still has trouble seeing things from different points of
view. The children's play is mainly categorized by symbolic play and
manipulating symbols. Such play is demonstrated by the idea of checkers being
snacks, pieces of paper being plates, and a box being a table. Their
observations of symbols exemplifies the idea of play with the absence of the
actual objects involved. By observing sequences of play, Jean Piaget was able
to demonstrate that towards the end of the second year, a qualitatively new kind
of psychological functioning occurs, this is known as the Pre-operational Stage.
(PRE)OPERATORY THOUGHT
The
Pre-operational stage is sparse and logically inadequate in regards to mental
operations. The child is able to form stable concepts as well as magical
beliefs. The child however is still not able to perform operations, which are tasks
that the child can do mentally rather than physically. Thinking in this stage
is still egocentric, meaning the child has difficulty taking the viewpoint of
others; The Pre-operational stage is split into two substages, The Symbolic
Function Substage and the Intuitive Thought substage. The symbolic function
substage is when children are able to understand, represent, remember, and
picture objects in their mind without having the object in front of them.
Intuitive thought substage is when children tend to propose the questions of
why and how come. This stage is when children want the knowledge of knowing
everything.
THE SYMBOLIC FUNCTION SUBSTAGE
At about 2-4
years of age, children cannot yet manipulate and transform information in a
logical way, however they now can think in images and symbols. Other examples
of mental abilities are language and pretend play. Symbolic play is when
children develop imaginary friends or role-play with friends. Children’s play
becomes more social they assign roles to each other. An example of symbolic
play is playing house, or having a tea party.
In this
stage, there are still limitations such as egocentrism, animism, and the
relationship of cause and effect. Egocentrism occurs when a child is unable to
distinguish between their own perspective and that of another person's.
Children tend to pick their own view of what they see rather than the actual
view shown to others. An example is an experiment performed by Piaget and
Barbel Inhelder, this is known as the three-mountain problem. In this
experiment three views of a mountain are shown and the child is asked what a
traveling doll would see at the various angles; the child picks their own view
instead to the actual view of the doll. Egocentrism would also be a child
believing, "I like Sesame Street, so Daddy must like Sesame Street,
too." A very similar thought process at this time is the idea of animism.
This is the belief that inanimate objects are capable of actions and have
lifelike qualities. An example is a child believing that the sidewalk was mad
and made them fall down, or that the stars twinkle in the sky because they are
happy. Another concept that children fail to understand in the preoperational
stage transductive reasoning is when a child does not understand the
relationships between cause and effect. For example if a child hears the dog
bark and then a balloon popped, the child would conclude that because of the
dog bark the balloon popped.
THE INTUITIVE THOUGHT SUBSTAGE
Occurs
between about the ages of 4 and 7. Children tend to become very curious and ask
many questions; begin the use of primitive reasoning. There is an emergence in
the interest of reasoning and wanting to know why things are the way they are.
Piaget called it the intuitive substage because children realize they have a
vast amount of knowledge but they are unaware of how they know it. 'Centration'
and 'conservation' are both involved in preoperative thought. Centration is the
act of focusing all attention on one characteristic compared to the others.
Centration is noticed in conservation; the awareness that altering a
substance's appearance does not change its basic properties. Children at this
stage are unaware of conservation. For example, in Piaget's most famous task, a
child is presented with two identical beakers containing the same amount of
liquid. The child usually notes that the beakers have the same amount of
liquid. When one of the beakers is poured into a taller and thinner container,
children who are younger than 7 or 8 years old typically say that the two
beakers no longer contain the same amount of liquid, and the taller container
holds the larger quantity. The child simply focuses on the height and width of
the container compared to the general concept. Another example of this is when
a child is upset by the amount of ice cream they are given in a large bowl.
However if the ice cream is switched to a smaller bowl, they are pleased. Even
though the amount of ice cream has never changed, their thought process allows
them to think in a way that when they see more in quantity, there truly is
more. Irreversibility is also a key concept developed in this stage. This is
when children are unable to mentally reverse a sequence of events. In the same
beaker situation, the child does not realize that the water can be poured from one
container to another and still be the same amount of water. Another example of
children's reliance on visual representations is their misunderstanding of
"less than" or "more than". When two rows containing equal
amounts of blocks are placed in front of a child, one row spread farther apart
than the other, the child will think that the row spread farther contains more
blocks. Another concept that relates to intuitive thought is transitive
inference. Transitive inference is using previous knowledge to determine the
missing piece, using basic logic. Children in the preoperational stage lack
this logic. An example of transitive inference is "a" is greater than
"b" and "b" is greater than "c." Children do not
understand that "a" is also greater than "c."
PRACTICAL APPLICATIONS
Parents
today still use Piaget's Theory when deciding what to teach or buy for children
to keep them active. For example children during this stage would benefit most
from toys such as VTech, Leap Frog, Nintendo DS, and club penguin. Children in
this stage also learn to ride bikes and watch televisions stations such as PBS
Kids and Noggin. All of these things help a child's mind to develop in a
healthy way. Teachers also use Piaget's Theory, in that they often decide what
they will teach students based on their age and grade.
CONCRETE OPERATIONAL
STAGE
The concrete operational stage is the
third of four stages from Piaget's theory of cognitive development. This stage,
which follows the preoperational stage, occurs between the ages of 7 and
11 years and is characterized by the
appropriate use of logic. During this stage, a child's thought processes become
more mature and "adult like." They start solving problems in a more
logical fashion. Abstract, hypothetical thinking has not yet developed, and
children can only solve problems that apply to concrete events or objects.
Piaget determined that children are able to incorporate inductive reasoning.
Inductive reasoning involves drawing inferences from observations in order to
make a generalization. In contrast, children struggle with deductive reasoning,
which involves using a generalized principle in order to try to predict the
outcome of an event. Children in this stage commonly experience difficulties with
figuring out logic in their heads. For example, a child will understand A>B
and B>C, however when asked is A>C, said child might not be able to
logically figure the question out in their heads.
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