Medicare Part B does not cover routine hearing exams or hearing aids. Medicaid, however, may cover some of the cost of hearing aids, depending on the state you live in. That's because each state operates its own Medicaid program, and each program has slightly different rules and coverage.
Research shows that infants display behaviours that are important beginnings for theory-of-mind development (see details in Mooreâs and Sommerville âs papers in the chapter on social cognition 9,10). By age 2, children clearly show awareness of the difference between thoughts in the mind and things in the world.
According to the developmental psychologist Jean Piaget, children between the ages of three and five go through a stage called egocentrism. The term egocentrism refers to a child's inability to understand another person's point of view; in other words, he or she believes that other children feel, think, and experience life as they do. In many cases, children also take part in egocentric speech.