A child who can classify objects by color, shape, and size is in which stage of Piaget's theory?

A child who can classify objects by color, shape, and size is in which stage of Piaget's theory?

• A. Sensorimotor
• B. Concrete operations
• C. Formal operations
• D. Preoperational

Answer: (B)

Classifying objects by multiple physical properties shows concrete operational thinking. At this stage, children begin to reason logically about concrete objects and can organize them using more than one attribute, such as color, shape, and size, and understand hierarchical classifications. This ability—decoupling from centration (focusing on one feature) and using decentered thought to group objects by several dimensions—reflects the shift from the earlier preoperational stage, where thinking is more egocentric and focused on a single feature, toward more organized, logical reasoning about real-world objects. This tends to appear around ages 7 to 11.

Classifying objects by multiple physical properties shows concrete operational thinking. At this stage, children begin to reason logically about concrete objects and can organize them using more than one attribute, such as color, shape, and size, and understand hierarchical classifications. This ability—decoupling from centration (focusing on one feature) and using decentered thought to group objects by several dimensions—reflects the shift from the earlier preoperational stage, where thinking is more egocentric and focused on a single feature, toward more organized, logical reasoning about real-world objects. This tends to appear around ages 7 to 11.