Final answer:
Adolescents who have reached Piaget's formal operations stage can think logically about abstract concepts, have a broader range of cognitive abilities, and are less egocentric compared to those still at the concrete operations stage.
Step-by-step explanation:
Adolescents who have reached Piaget's formal operations stage are different from those who are still at the concrete operations stage in several ways.
- They can think logically about abstract concepts: In the formal operations stage, adolescents have the ability to think abstractly, which means they can use logical reasoning to understand and solve problems involving abstract ideas, such as freedom or justice.
- They have a broader range of cognitive abilities: Formal operational stage adolescents can consider multiple points of view, imagine hypothetical situations, and form new ideas, while concrete operational stage adolescents are limited to thinking about concrete events and struggle with more complex thinking tasks.
- They are less egocentric: Egocentrism diminishes as adolescents enter the formal operations stage. They become more capable of considering others' perspectives and understanding that others may have different thoughts and feelings than their own.