Talk:Principles of grouping

In what sense is closure related to grouping, rather than a more general perceptual principle? For example, it seems obvious how objects that are close (in space, pitch, or time) are likely to be grouped, and that similar objects are likely to be grouped, etc.. But how does closure relate to grouping? For example, is it that the incomplete forms may be grouped with complete forms (that seems analogous with similarity), or that the included parts of the incomplete form are grouped due to the gaps (excluded parts) between them being filled in? An explanation, or example, would be very helpful. — Preceding unsigned comment added by 86.138.88.96 (talk) 11:49, 8 February 2012 (UTC)