Children in the pre-operational stage have difficulty in taking the perspective of another person; this is known as:

"Jean Piaget", a Swiss psychologist, is famous for his work on child development. He made a systematic study of cognitive development in his theory that is categorized in four stages.

Key Points 

• 'Preoperational period' lasts around 2 to 6 or 7 years of age.
• In this stage, the child faces the problem of egocentrism due to which he assumes that other people feel, see, and hear exactly the same as he/she does.
• It refers to the child's inability to infer the perspective of other people or to see a situation from other's points of view.

Hence, it could be concluded that children in the pre-operational stage have difficulty in taking the perspective of another person; this is known as Egocentrism.

Additional Information

• Reversibility is the understanding that a child develops to know that things that have been changed can be returned to their original state.
• Animism makes the child imagine that toys are living beings and wants them to talk, to walk, to sit and stand, and to do as s/he says. For example, a child talking to a doll or feeding the doll.
• Constructivism as a theory is based on the idea that meaningful learning takes place when learners actively construct their own knowledge.