concrete operational thought (7-11 years), involves relatively sophisticated problem-solving behavior and attainment of adult thought. Stage IV, formal operational thought (12 years and older), is characterized by the ability to develop hypotheses and deduce new concepts.Child psychologists are and always have been interested in the interaction of biological traits and environmental events that influence behavior and development. Research today involves things such as memory and attention span also they are trying to find out how you get from one level of thought to the next.Piaget asserted that for a child to know and construct knowledge of the world the child must act on objects and it is this action which provides knowledge of those objects, the mind organizes reality and acts upon it. Readiness approaches in developmental psychology emphasize that children cannot learn something until maturation gives them certain prerequisites. The ability to learn any cognitive content is always related to their stage of intellectual development. Children who are at a certain stage cannot be taught the concepts of a higher stage. Some children advance more quickly in the development of logical intelligence than do others, this is known as Piagetian Principals in the Classroom. The students should be given the freedom to understand and construct meaning at their own pace through personal experiences as they develop through individual developmental processes. Learning is an active process in which errors will be made and solutions will be found. Piaget did several experiments with children on conservation tasks (tasks devised to find out whether children understood that some transformations of objects leave some of their property unchanged). Children tend to focus on one part of the task this is known as centration. The stage in which we are discussing is the pre-operational stage, involving children ages 2-7. In order to get an accurate meas...
