Full Idea
Psychologists use 'concept' interchangeably with 'mental representation', 'category representation', 'knowledge representation', 'knowledge structure', 'semantic representation', and 'conceptual structures'.
Gist of Idea
By 'concept' psychologists mean various sorts of representation or structure
Source
Edouard Machery (Doing Without Concepts [2009], 1.1)
Book Reference
Machery,Edouard: 'Doing Without Concepts' [OUP 2009], p.14
A Reaction
[Machery gives references for each of these] Machery is moving in to attack these, but we look to psychologists to give some sort of account of what a concept might consist of, such that it could be implemented by neurons.