Face space is a theoretical idea in psychology such that it is a multidimensional space in which recognisable faces are stored. The representation of faces within this space are according to invariant features of the face itself. However, recently was theoretically demonstrated that faces can be stored in the face space according to their dynamic features as well, and that in this case the resulting space exhibits a twofold structure.
The face space is useful for accounting various aspects of face recognition including distinctiveness, the own race bias and caricature effects.
The face space framework has been cited in almost 1000 scientific articles and it was recently revisited in a special edition of the journal Quarterly Journal of Experimental Psychology featuring the top 10 ideas that have appeared in the journal's pages.