Piaget estimated the concrete operational stage occurs roughly during which age range?

• A. 3-6
• B. 11-15
• C. 5-7
• D. 7-11

Answer: (D)

During this stage, children's thinking becomes logical and organized about concrete objects and events. This typically occurs in the school-age years, roughly from 7 to 11. At this time they gain conservation, reversibility, and the ability to classify and seriate, so they can work through problems step by step using real-world examples. They can reason about cause and effect more accurately and perform logical operations on tangible tasks, though they still struggle with abstract or hypothetical concepts. Earlier developmental periods (before 7) involve more intuitive or egocentric thought, and later adolescence brings formal operational thinking with abstract reasoning. So the 7–11 range best matches this stage.