This is a good website because it has a variety of optical illusions as well as the reason that our eye perceives these images in a certain way. It is a credible website because of the .edu domain.
This articles explains how the teenage brain functions and develops and the ways that brain activity often manifests itself. It explains how teenagers rely primarily on the "amygdala" and the consequences of this fact. It also gives advice to parents on how to deal with their teenagers' irrational behaviour due to the stage that their brain is at.