This was probably one of the hardest classes I've taken as a psychology major. I probably (definitely) would have failed if it was in person.

The anatomy of the brain, cerebral pathways, etc.

The professor taught in a very fast-paced manner and seemed to think everyone had an above average understanding of neuroanatomy. Her powerpoints were dry and made it hard to take notes and pay attention.

I would've taken a different course for the biological bases domain.