- this phenomenon allows us to perceive an object as unchanging while the stimuli we receive from it change
- we identify things regardless of viewing angle, distances, and illumination
Size Consistency
- the tendency to perceive the same object as being the same size, even though the size of its image on the retina varies as a function of its distance
- perceive them as to be the same size from great distances, even though the sensory input stimulates many fewer neurons on the retina
Shape Constancy
- allows us to perceive familiar objects as having a constant form even when our retinal image of them change
Color Constancy
- perceive objects as retaining their color even though lightning conditions may alter their appearances
Lightness Constancy
- brightness constancy
- perceive a object as having constant lightness even while its illumination varies
