Expectancy, instrumentality, and valence are the three components of the expectancy theory of work motivation

During middle childhood _________________.

a. the incidence of myopia decreases b. ear infections are more likely than they were earlier in the lifespan because of more exposure to germs during the school years c. girls and boys are more likely to be slim than at any other time d. girls are usually taller and heavier than boys

Most social activity before the age of 3, involves social interaction and an understanding of the value of friendship

Indicate whether the statement is true or false