Most Researchers Have Concluded That Potential AAC Users Must Reach

question 19

True/False

Most researchers have concluded that potential AAC users must reach at least Stage V on Piaget's hierarchy of cognitive development in order to benefit from an AAC system.

---

Definitions:

Cretaceous Period

A geological period from about 145 to 66 million years ago, known for being the last portion of the age of dinosaurs.

Tectonic Plates

Massive, irregularly shaped slabs of solid rock composing the Earth's lithosphere, whose movements cause earthquakes, volcanic eruptions, and the formation of mountains.

Molten Rock

Liquid rock usually found beneath the Earth's surface, also known as magma when underground and lava when it emerges on the surface.

Advancing Edge

Refers to the forefront or leading front of something moving forward or expanding, commonly used in contexts involving growth, innovation, or the spread of phenomena.