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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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ILLUSION
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00246_Text_re40t.txt
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1996-12-31
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49 lines
These findings also suggest
that reversal can be explained
in an entirely different way.
When one does not know that a
figure can be seen in more than
one way, one tends to organize
it on the basis of certain
principlesΓÇöΓÇôfor instance, in
favor of the central region of
RubinΓÇÖs vase and faces as figure
rather than ground or, in the
case of the Necker cube, in
favor of the depth organization
in which the cube appears to be
horizontal rather than tipped
on an edge. These preferences
were in fact manifested in our
experiment. Of course, if no
such lawful factors are
operating, the initial
organization might be based on
chance factors, such as where
in the figure the observer
happens to be fixating or
attending. Once that
organization occurs, the naive
observer may stick with it,
there being no particular
reason to alter it. After a long
period of inspection, which is
only likely to occur in
experiments, the observer may
become bored (satiated, in the
psychological meaning of the
word). Or the observer may
begin to wonder why he or she
is supposed to continue looking
at it and begin to look for
alternatives, which of course
would change the equation. Or
the observerΓÇÖs attention may
wander, thus interfering with
the maintenance of the initial
organization. Obviously, naive
observers sometimes do achieve
a reversal, or reversible figures
would never have been
discovered.