Piaget's Theory of Cognitive-Development (1971) Piaget is renowned for the contributions he made towards the development of theory and research in the discipline of child development. In this theory, Piaget borrowed heavily from the field of evolutionary biology. At the center of this theory is the idea that our cognitive capabilities are adaptations that ensures our knowledge is perfectly "fitted" to the world. To that respect, Piaget believed that chances of human survival were ultimately enhanced by their intelligence.
He however noted that human knowledge does not always measure up to the reality because we are prone to prejudices, partial understanding, false assumptions and incorrect knowledge. Just like we are prone to distorted thinking, children's thinking too is filled with misunderstandings about the constructions of nature (Lockman, 2013). As brought forward in Lockman's work, Piaget noted, for instance, that children in pre-school are egocentric in the sense that they base their thinking on their own viewpoints disregarding the divergent views of others around them.
Accordingly, Piaget believed that cognitive development is likened to a revision process where children revise their acquired knowledge in order to facilitate perfect "fit" to reality. Towards that end, Piaget was of the idea that a balance must be struck between a child's cognitive structure and the nature of physical and social world. In explaining children's cognitive development process, Piaget proposed four stages of cognitive development. Sensorimotor Stage (birth -2 years) Preoperational Stage (2-7 years) Concrete Operational Stage (7-12 years) Formal Operational Stage (adolescence) Inasmuch as we appreciate the contribution of Piaget's Theory of Cognitive Development in the field of cognitive development, it is important to note the demerits of this theory of cognitive development Dissenting voices have emerged in the recent past arguing that this theory portrays a child as a solitary learner without giving cognizance to the role of social and cultural factors in children's development.
Vygotsky's Sociocultural Theory of Development Contrasting Piaget's ideas, Vygotsky emphasized the role of social environment in a child's development. He believed that social interaction with more experienced and knowledgeable members in the society such as parents, caregivers, relatives, teachers etc. helps children to acquire knowledge and skills that are deemed culturally right. Vygotsky strongly believed that children actively explore their surroundings and influence the shaping of their own knowledge.
Vygotsky was of the opinion that development is a social process and that social interactions are essential in cognitive development (Keenan & Subhadra, 2009). Vygotsky further brought forth two main successive patterns that child's development follows. Children show first evidence of development through interpersonal interactions that occur between them and other people, later on, children show evidence of development at individual/interpersonal level The first stage of development deals with interpersonal relationships while the second stage deals with intrapersonal relationships.
Social growth as proposed by Vygotsky therefore shifts from interpersonal to intrapersonal relationships. Vygotsky used the example of self-talk in children where in the first level, the child will pronounce terms like, say for example, "Vicky! mom said you can make it" when faced with a challenge. As the child develops to the next level, he/she stops saying such words aloud and instead encourages himself/herself inwardly. Based on this example, Vygotsky believed that parents and teachers worked at an optimal level of facilitating child development hence his stand that social interactions are critical to a child's cognitive development (Keenan & Subhadra, 2009).
The Information Processing Theories of Cognitive Development Information Processing Theories encompasses different theories concerned with aspects of thinking.
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