Apperception

In psychology, it is "the process by which new experience is assimilated to and transformed by the residuum of past experience of an individual to form a new whole" (Ledger Wood in Runes). In short, it is to perceive new experience in relation to past experience.

Example 1: We see a fire (visual perception). By apperception we correlate the appearance of fire with past experiences of being burned. Having combined present and past experience we realize this is a situation in which we should avoid placing our hand in the fire and being burned.

Example 2: A rich child and a poor child walking together come across the same $10.00 bill on the sidewalk. The rich child says it is not very much money and the poor child says it is a lot of money. The difference lies in how they apperceive the same event -- the lens of past experience through which they see and value (or devalue) the money.