concrete operations

concrete operations
a stage in reasoning or functioning usually seen in children between the ages of approximately 7 and 11, following the stage of preoperational thinking and preceding that of formal operations; it is characterized by comprehension of relational terms, decrease in egocentricity and increase in the ability to appreciate the perspective of others, understanding of the reversibility of events and ideas as well as of conservation of volume and quantity, and the beginning of logical thought, although it is initially restricted to objects immediately present.

Medical dictionary. 2011.

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