In 4-year-old Amanda’s preschool class, the group discussion…

In 4-year-old Amanda’s preschool class, the group discussion involved airplanes. After that, Amanda considered herself an expert on airplanes and believed she knew everything there was to know about airplanes, even though she was unable to provide a reasonable explanation about why she thought she knew so much about airplanes. According to Piaget, in this example, Amanda is demonstrating

When 2-year-old Sarah is riding in the car with her parents,…

When 2-year-old Sarah is riding in the car with her parents, she occasionally points at passing vehicles and calls out “see cars,” even though some of the vehicles are buses and trucks. This is an example of which language error commonly observed in early childhood?

Baby Jimmy’s parent places a brand new rattle in his crib, a…

Baby Jimmy’s parent places a brand new rattle in his crib, and Jimmy immediately picks it up and tries to mouth the rattle. When it shakes, it makes noise. Jimmy immediately tries shaking the rattle in different ways to see how the sound changes. He seems to enjoy this activity. Piaget would say that this is an example of