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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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00104_Field_104.txt
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1996-12-31
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Given the early appearance of
constancy, how can we explain
the fact that some studies
indicate that constancy
perception increases with age?
It could mean that constancy is
approximated in an infant and
becomes refined with age. Or it
could mean that young
children understand the
instructions in an experiment
less clearly or differently than
adults do. They may be more
aware than adults of the
conflict between the two modes
of perception or, alternatively,
adults may be clearer that the
constancy mode is the one to
focus on.
The best available evidence
on size perception is that
children of 5 or 6 years of age
only show some partial failure
of constancy at a considerable
distance, beyond 50 feet. Since,
as we shall see in Chapter 3, it
is most probable that the cues
to distance beyond that range
are based primarily on the
kinds of information artists
make use of--perspective,
shadows, and the like--the
deficit in children, if any, may
be attributed to lack of
sensitivity to such cues rather
than to an immature capacity to
achieve constancy.