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Piaget's legacy carries on today in modern psychology. Our class being proof of that. However, every theory has it's holes and Piaget's is no different. One major criticism, from Wayne Weiten who is a psychologist at the university of Nevada. focuses on how different kids are and how some develop much faster, or slower, than others. Which may mean that the stages are inaccurate or just plain wrong. Overall, there is still plenty of research to do, but Piaget's theory does have plenty of supporting evidence.

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concrete operational stage sensorimotor stage preoperational stage cognitive theory development formal operational schemas piaget's cognitive development assimilation

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The Formal Operational Stage is from 12 to maturity. During this time, people are now able to use abstract thinking, logical thought, deductive reasoning, and planning. This all includes problem solving and quick planning.

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Between 7 and 11, Concrete operational stage is where more mental operations are understood. For example, they are better at using inductive logic and reversibility. However, they still struggle with deductive logic.

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Between the ages of 2 and 6 is the preoperational stage. During those years, kids learn how to speak. They also are able to use their imaginations much more. However, they still aren't able to use solid logic or see other people's point of view (Egocentrism).

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The Tertiary Circular Reactions substage happens during months eighteen through twenty-four. This is the stage when babies begin trial and error experimentation and develop representational thought. One good example of trial and error is a baby crying to get food because it knows crying will get moms attention.

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The Secondary Circular Reactions substage happens during months four through eight. This is where babies deliberately repeat actions in order to produce a response. An Examples of this are babies sucking their thumbs because it causes pleasure, coordinating a physical movement with a sensation

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The Primary Circular Reactions substage happens during months one through four. This substage is all about babies coordinating their sensations and developing new schemata.

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The sensormotor stage is the first stage of development for human children. It starts at birth and continues for about two years. During this time the child develops simple motor responses. One for example is a baby turning it's head towards physical stimulus. For the next few months this stage is broken down into   3 sub-stages.