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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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1997-02-04
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Is Constancy Learned or
Innately Determined?
A duplicate drawing of the
woman and man in the
background of the CapitolΓÇÖs
corridor has been placed in the
foreground. Despite the
equality of the visual angles
the couples subtend, they look
different in size.
How do we come to possess
spatial and lightness
constancies? Almost all
beginning students of
perception assume that
constancy is learned as we
develop and move around in the
environment. In doing so, we
discover that distant objects
that appear small are actually
quite large, that slanted things
that look like ellipses and
trapezoids are in fact circles
and squares, and so forth. This
belief is consistent with the
popular but erroneous camera
theory of perception, discussed
in Chapter 1, and, like it, rests
on the assumptions that
perception corresponds with
the picture the eye "takes" and
that what is referred to as
constancy is a matter of
knowing about things, not a
matter of how things appear to
us.