Which Piaget stage lasts from age 12 to adulthood?

• A. Sensorimotor
• B. Pre-operational
• C. Concrete Operational
• D. Formal Operational

Answer: (D)

Thinking shifts to a more advanced level when adolescence begins: the ability to reason about abstract concepts, imagine possibilities, and test ideas mentally without relying on concrete objects. This is the formal operational stage, which typically starts around age 12 and continues into adulthood. In this stage, people can think hypothetically, conduct deductive reasoning, and plan systematic approaches to problems. They can explore abstract notions such as justice, morality, or future consequences and reason about multiple perspectives.

Before this stage, thinking is more tied to concrete experiences. Sensorimotor thinking involves learning through actions and direct interaction with the world, peaking in early infancy. Pre-operational thinking, common in the preschool years, shows rapid language and symbol use but is still egocentric and not yet capable of logical operations. Concrete operational thinking, generally from about seven to eleven or twelve, brings logical reasoning about concrete situations and tasks like conservation, but not yet abstract reasoning. The formal operational stage marks the transition to adult-like thinking with abstract, hypothetical, and systematic reasoning.