Full Idea
Psychological theories of concepts try to describe the knowledge stored in concepts, the format of concepts, the cognitive processes that use the concepts, the acquisition of concepts, and the localization of concepts in the brain.
Gist of Idea
Concept theorists examine their knowledge, format, processes, acquisition and location
Source
Edouard Machery (Doing Without Concepts [2009], Intro)
Book Reference
Machery,Edouard: 'Doing Without Concepts' [OUP 2009], p.4
A Reaction
I suppose it would the first two that are of central interest. What individuates a concept (its 'format') and what are the contents of a concept. The word 'stored' seems to imply a mental files view.