Closure perceiving forms and figures in their complete appearance despite the absence of one or more of their parts, either hidden or totally absent.
Linear Perspective our perception of distance affects our perception of length although they are the same size.
Interposition an object appearing to block the view of another leads us to assume that the blocked object is in a position relative to the distance.
Size Constancy the tendency to perceive an object as being the same size regardless of whether it is close or far away.
Color Constancy the tendency to perceive a familiar object as having the same color under different conditions of illumination.
Shape Constancy the tendency to perceive an object as having the same shape regardless of its orientation or the angle from which we view it.
Similarity when things appear to be similar to each other, we group them togetherand we tend to think they have the same function.
Relative Size a perceptual clue which allows you to determine how close objects are to an object of known size.
Visual Cliff an apparent, but not actual drop from one surface to another, originally created to test babies' depth perception.
Figure-ground Perception the tendency of the visual system to simplify a scene into the main object that we are looking at (the figure) and everything else that forms the background (or ground).