Thursday, January 17, 2019

Piaget theory of cognitive development

Piaget theory of cognitive development


COGNITIVE DEVELOPMENT refers to how a person perceives, thinks, and gains an understanding of his or her world through the interaction and influence of genetic and learned factors.
  
Jean Piaget, who was both a biologist and a psychologist. From the 1920s to his death in 1980, Piaget (1929) studied how children solved problems in their natural settings, such as cribs, sandboxes, and playgrounds. Piaget developed one of the most influential theories of cognitive development (Bjorklund, 2005).

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      Piaget believed that from early on, a child acts like a tiny scientist who is actively involved in making guesses or hypotheses about how the world works. For example, when given blocks, 5-month-old Sam puts them into his mouth, while 2-year-old Sam tries to stack them, and adolescent Sam laughs and plays a game of tossing blocks into a can. Piaget believed that children learned to understand things, such as what to do with blocks, through two active processes that he called assimilation and accommodation.

1) ASSIMILATION is the process by which a child uses old methods or experiences to deal with new situations.
2) ACCOMMODATION is the process by which a child changes old methods to deal with or adjust to new situations.
 
Piaget’s cognitive stages refer to four different stages—sensorimotor, preoperational, concrete operations , and formal operations—each of which is more advanced than the preceding stage because it involves new reasoning and thinking abilities.

1 THE  SENSORIMOTOR  STAGE (from birth  to about age 2) is  the first of Piaget’s cognitive  stages. During this stage, infants  interact with and learn about their environments  by relating their sensory experiences (such as hearing  and seeing) to their motor actions (mouthing and grasping).
      
HIDDEN  OBJECTS - At  the beginning  of the sensorimotor  stage, child has one thinking problem:  remembering that hidden objects still  exist.
OBJECT PERMANENCE  refers to the understanding  that objects or events continue  to exist even if they can no longer  be heard, touched, or seen.
         The concept  of object permanence  develops slowly over a period  of about nine months. By the end  of the sensorimotor period (about age  2), an infant will search long and hard  for lost or disappeared objects, indicating a  fully developed concept of object permanence.

2 THE  PREOPERATIONAL  STAGE (from about  2 to 7 years old)  is the second of Piaget’s  cognitive stages. During this  stage, children learn to use symbols,  such as words or mental images, to solve  simple problems and to think or talk about things that are not present.
  During the  preoperational  stage, two of his  cognitive limitations  involve having problems  with conservation and engaging  in egocentric thinking.

CONSERVATION  refers to the  fact that even though  the shape of some object or substance is changed, the total amount remains the same.
      
EGOCENTRIC  (ee-goh-SEN-trick)  thinking refers to seeing  and thinking of the world  only from your own viewpoint  and having difficulty appreciating someone else’s viewpoint.
     Piaget  used the  term egocentric  thinking to mean  that preoperational  children cannot see situations from  another person’s, such as a parent’s,  point of view. When they don’t get their  way, children may get angry or pout because their view of the world is so self-centered.

3 THE  CONCRETE  OPERATIONS  STAGE (from  about 7 to 11  years) is the third  of Piaget’s cognitive  stages. During this stage,  children can perform a number  of logical mental operations on  concrete objects (ones that are physically present).
     Children  gradually master  the concept of conservation  during the concrete operational  stage, and they also get better  at classification.
       Piaget called  this the concrete  operational stage is  that children can easily  classify or figure out relationships  between objects provided the objects are  actually physically present or “concrete.”
 
4 THE  FORMAL OPERATIONS  STAGE (from about 12  years old through adulthood) is  Piaget’s fourth cognitive stage. During  this stage, adolescents and adults develop  the ability to think about and solve abstract  problems in a logical manner.
      Piaget believed  adolescents develop  thinking and reasoning  typical of adults during  the formal operations stage , adolescents  also encounter new worlds of abstract ideas  and hypothetical concepts.
     Along with  advances in cognitive  abilities, the formal operations stage  welcomes the return of EGOCENTRIC THINKING,  which refers to the tendency of adolescents to  believe that others are always watching and evaluating  them, and the belief that everyone thinks and cares about  the same things they do. Because adolescents think people are watching  their every move, they act as though they are performing in front of an  audience.
IMAGINARY  AUDIENCE refers  to the belief adolescents  have that everyone is watching  all of their actions.
     Another  aspect of  adolescent thinking related  to egocentric thinking is the  personal fable. PERSONAL FABLE refers  to an adolescent’s belief that he or she is invulnerable, unique, and special.










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