the period 2 to 7 years within piagets theory in which children become able to represent their experiences in language, mental imagery, and symbolic thought
(hinking is egocentric and animistic)
An inability to see the world from others' perspectives
(hallmark of the preoperational stage)
an adolescent's belief that his or her own behavior is primary focus of others' attentions and concerns
who was one of the first scientists to prove that a child's cognitive processes are fundamentally differant from an adult's?