Full Idea
Gestalt psychology claims that there are at least four unlearned factors in perceptual grouping - the principles of proximity (close things), of similarity, of good continuation (extending lines in a smooth course), and closure (which completes figures).
Clarification
Gestalt psychology concerns our perception of things as unities rather than as parts
Gist of Idea
Gestalt psychology proposes inbuilt proximity, similarity, smoothness and closure principles
Source
Alvin I. Goldman (Phil Applications of Cognitive Science [1993], p.103)
Book Reference
Goldman,Alvin I.: 'Philosophical Applications of Cognitive Science' [Westview 1993], p.103
A Reaction
This offers a bridge between Hume's associationism and rationalist claims of innate ideas