What is a key feature of Piaget's Formal Operational stage?

The key feature of Piaget's Formal Operational stage is that abstract reasoning emerges in various domains. This stage, which typically begins around age 12, allows individuals to think about abstract concepts, formulate hypotheses, and engage in problem-solving that does not rely solely on concrete physical objects or situations. Children develop the ability to manipulate ideas in their minds and contemplate possibilities, which lays the groundwork for advanced reasoning skills.

In this stage, learners can think logically about hypothetical scenarios and explore complex relationships, thereby enhancing their understanding across subjects such as mathematics, science, and philosophy. This marks a significant shift from earlier stages of cognitive development, where thinking was largely concrete and tied to tangible experiences.