3. What distinguishes mental disorders that are classified as organic disorders from those classified as functional disorders?

An organic mental disorder is a previously used term to describe a dysfunction of the brain that was meant to exclude psychiatric disorders. It is currently known under the category of neurocognitive disorders. It describes reduced brain function due to illnesses that are not psychiatric in nature.

Explanation:

cognitive activities are mental processes through which we make sense of the world around us or get to know or experience our environment (internal and external). examples of cognitive activities are reasoning, thinking, perceiving, decision-making, listening, observing,etc.