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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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SROCK_TX.CXT
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00088_Text_res29t.txt
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1996-12-31
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730b
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25 lines
How can we determine
whether or not the
achievement of constancy
depends on prior experience? If
the basis of constancy at issue
is some stimulus relation, as is
probable in the perception of
lightness, there is no problem:
Dependency on experience
seems unlikely and, in fact,
gratuitous. Given a certain
stimulus basis for a perception,
such as is surely true for the
chromatic hues, what need to
invoke a learning hypothesis?
By the same token, if lightness
is directly given by ratio of
luminances, it seems quite
plausible that lightness
constancy is a direct outcome
of determination by such a
ratio. What little evidence
there is on this question
confirms this reasoning.