Concrete Operational Stage: A period between ages 7 and 11 during which children gain a better understanding of mental operations.During this stage, children do not yet understand concrete logic, cannot mentally manipulate information, and are unable to take the point of view of other people. Pre-Operational Stage: A period between ages 2 and 6 during which a child learns to use language.Behaviors are limited to simple motor responses caused by sensory stimuli.
