Final answer:
According to Piaget, adolescents are capable of very intelligent reasoning, but Elkind argues that reasoning in adolescents is influenced by adolescent egocentrism.
Step-by-step explanation:
According to Piaget, adolescents are capable of very intelligent reasoning, which he refers to as formal operational thought. However, Elkind argues that reasoning in adolescents is influenced by adolescent egocentrism. Egocentrism is the tendency for adolescents to focus on themselves and believe that others share their thoughts, feelings, and experiences.