Definition of preoperational
- Piaget believed that during the preschool period and up to about age 6 or 7, children are in a preoperational stage—too young to perform mental operations.
- —David G. Myers
- The preoperational child will invariably point to the taller, thinner glass. He believes that it contains more water because the water level is higher.
- —Dorothy G. Singer & Tracey A. Revenson