Jean Piaget’s (1896 - 1980) theory of cognitive development during childhood was regarded as the major paradigm in which to understand the complex procedure of mental progression through different levels of thinking and understanding.
Piaget’s theory of cognitive development contains 4 stages. The first of Piaget’s stages of cognitive development is the "sensory-motor stage". This stage occurs around 0-2 years. It is essentially a stage of practical discovery, which occurs by interaction with the environment through the senses and by using motor skills. The second of Piaget’s stages is the "pre-operational stage". This stage lasts from around 2 - 7 years. Piaget contended that at this time a child fails to "conserve". This is basically the understanding that things remain constant in terms of number, quantity and volume regardless of changes in appearance. Within the pre-operational stage, Piaget identified a characteristic that he referred to as "egocentrism." This is the child’s inability to see the world from another’s perspective. They are quite literally self-centred. The third stage is the "concrete operations" stage which lasts from about age 7 - 11 years. In this stage, children can perform operations requiring logic such as conservation. But this ability only holds for what he called concrete situations, the child is no longer egocentric and now has the ability to de-centre. The final stage is the concrete operational stage Beyond 11 years of age the child is said to enter the final stage in cognitive development which is the "formal operations" stage. In this period, the child is able to think and reason scientifically. The child is also able to imagine and deliberate that which has never actually been encountered.
Accelerated learning on the other hand was devised by Colin Rose which was based on the idea that people