The stages of cognitive development

This is just a brief overview for reference, and it’s rough because I’m going from memory.

Sensorimotor Period

This is the level of animal intelligence. In humans it typically extends from birth to 18-24 months old. It involves being able to logically deduce the existence of an object from a series of events. In the later stages, people in this period can analyze one object or situation at a time. Many animals reach stage 5. A few reach stage 6. Dogs reach stage 6 but cats only reach stage 5. Continue reading