Afocus on how we encode, process, store, and retrieve information is most relevant to the

A focus on how we encode, process, store, and retrieve information is most relevant to the cognitive perspective.
Cognition has to do with the way your brain works - how you think, learn, acquire new information, as well as recall it when you need it. Cognitive perspective studies all of this which is related to the brain and brain processes. 

Because so many people use them and say that they are good

Where are the following