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Illusion - Is Seeing Really Believing?
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Illusion - Is Seeing Really Believing (1998)(Marshall Media)[Mac-PC].iso
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00233_Text_ref22t.txt
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1997-02-04
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The Gestalt principle of good
continuation has recently
received experimental support
that makes at least one aspect
of it more precise and objective.
Philip Kellman and Thomas
Shipley at Swarthmore College
investigated the conditions
that lead to the perception that
stimulus patterns on either
side of an occluding object (as
in the tree example) belong
together, and have advanced a
mathematical formula that
predicts the perceptual
outcome.
Two other important
principles of organization are
proximity and similarity. Other
things being equal, we tend to
organize units that are closest
together as parts of an overall
whole. Thus, we perceive the
string XXX XXX XXX XXX as a
set of four triplets of Xs. We
could just as well describe them
as six sets of pairs of Xs, but the
differences in spacing favors
the former perception.
Proximity is, of course,
relative. Thus, the separations
that are the greater in one
array of units, and therefore do
not lead to groupings, may
become the lesser in another
array and thus lead to
groupings.