Swiss developmental scientist Jean Piaget (1896–1980) developed Piaget’s theory of cognitive development, sometimes referred to as a developmental stage theory. It covers the nature of knowledge, how people create, acquire, and apply it, as well as the nature and evolution of human intellect. According to Piaget, cognitive development is the arrangement of mental processes brought about by environmental experiences and biological maturation. Children learn about the world around them, encounter differences between what they already know and what they learn from their surroundings, and then modify their thoughts accordingly. According to him, language depends on the knowledge and comprehension that are gained via cognitive growth, which is at the core of the human body.
Piaget identified four critical phases of cognitive development: the sensorimotor stage, which lasts from birth to age two; the preoperational stage, which continues from age two to age seven; the concrete-operational stage, which lasts from age seven to twelve; and the formal-operational stage, which lasts from age eleven to twelve and beyond. Applications of Piaget’s ideas include “open education” and child-centered classrooms.
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Piaget’s stages of cognitive development
There are four important stages of cognitive development:
(i) Sensorimotor: (birth to about age 2)
In the first stage of Piaget’s theory, newborns possess the following fundamental senses: hearing, vision, and motor abilities. Though restricted at this point, the child’s understanding of the world is always growing as a result of their interactions and experiences. When a newborn reaches the age of 7 to 9 months, Piaget claims, they start to exhibit object permanence, which means they can comprehend that things exist even when they are hidden from view. For instance, if a child’s favorite toy is hidden behind a blanket, they are still able to search below it even if they are unable to see it.
(ii) Preoperational Stage: (begins about the time the child starts to talk about)
In the first stage of Piaget’s theory, young children start employing mental symbols to analyze their surroundings throughout this developmental period. These symbols frequently consist of words and pictures, and when the kid encounters numerous things, occasions, and circumstances in their daily life, they will start to use these varied symbols. However, because children at this stage are unable to perform some cognitive processes, such as mental math, Piaget termed it the “preoperational” stage. Apart from symbolism, youngsters begin to play pretend, assuming the roles of instructors and superheroes, among others. Children between the ages of three and four frequently exhibit what is known as egocentrism, which is one of the deficits in this developmental period. Around the age of seven, however, children’s brain processes shift from being egocentric to being more intuitive; that is, they start to consider appearances rather than logic.
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(iii) Concrete: (about first grade to early adolescence)
Children between the ages of 7 and 11 employ suitable reasoning to create cognitive operations throughout this period, and they start applying this new way of thinking to many situations they may come into. In order to create a generalization, children in this stage use inductive reasoning, which entails extrapolating findings from other observations. In contrast to the preoperational stage, children may now rearrange and modify mental representations and symbols to create a coherent concept. Reversibility is an example of this, where a kid can undo an action simply by doing the opposite.
(iv) Formal operations: (about early adolescence to mid/late adolescence)
The capacity to “think more rationally and systematically about abstract concepts and hypothetical events” is the hallmark of the last stage of Piaget’s cognitive development. One advantage of this stage is that the kid or teenager starts to develop their personality and learns why people act in certain ways. Negative sides do exist, too, such as the kid or teenager acquiring egocentric notions, such as the personal story and the imagined audience. An imaginary audience is when an adolescent feels that the world is just as concerned and judgmental of anything the adolescent does as they are; an adolescent may feel as if they are “on stage” and everyone is a critique and they are the ones being critiqued. A personal fable is when the adolescent feels that he or she is a unique person and everything they do is unique.
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