Full Idea
Peacocke's 'Simple Account' says philosophers should determine the necessary and sufficient conditions for possessing a concept, and psychologists should explain how the human mind meets these conditions.
Gist of Idea
Philosophy should merely give necessary and sufficient conditions for concept possession
Source
report of Christopher Peacocke (A Study of Concepts [1992]) by Edouard Machery - Doing Without Concepts 2
Book Reference
Machery,Edouard: 'Doing Without Concepts' [OUP 2009], p.31
A Reaction
One can't restrict philosophy so easily. Psychologists could do that job themselves, and dump philosophy. Philosophy is interested in the role of concepts in meaning, experience and judgement. If psychologists can contribute to philosophy, fine.