lifes a move up and down like a object is square
The topic title is self explanatory, constancy of ehat we see, if an object is square for instance, it remains a squre from whatever angle it is observed.
what are the cures?
They are remembered.
Psychology - Visual constancies
Perceptual constancies are learned visual perception  principles which
enable us to perceive stimuli which change in size, shape and brightness as
remaining constant. Although the retina  detects sensory changes, our
familiarity with the observed object assists us in maintaining perceptual
Size Constancy:  This is when we maintain an object's perceived size,
even though the size of the retinal image alters due to changes in its
distance from us. For example, when we look at a person from a distance of
one metre, the retinal image is much larger than the one produced when
looking at the person from a distance of two metres.
Nevertheless, we keep the person's size constant and do not think that the
person is shrinking as they are walking away from us.
Shape Constancy:  This is when we maintain an object's perceived
shape, even though the image cast on the retina changes according to the
angle at which it is observed. For example, the retinal image of a football
alters depending on the angle at which it is viewed. However, we maintain
the shape of the football and do not think its shape is distorting.
Brightness Constancy:  This is when an object's perceived brightness,
in relation to its surroundings, is maintained even though there are
changes in the amount of light received by the retina.  For example, the
brightness of a car remains constant, even on a cloudy day with little
sunlight, because everything surrounding it has been altered by the same
level of brightness.
Orientation (position constancy): This is when we are able to maintain an
object's location in space, relative to its surroundings. For example,
light poles, trees and traffic lights are usually perceived as vertical
regardless of which position we are viewing them. We don't think that the
object has changed its orientation or location if we view it from a
different position rather, we maintain its orientation as being constant by
comparing it to its surroundings.
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