Apperception (Latin ad + percipere, to perceive) has the following meanings: In epistemology, it's "the introspective or reflective apprehension by the mind of its own inner states" (Ledger Wood in Runes). In psychology, it's "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's to perceive new experience in relation to past experience. Example 1: We see a fire (vi… (More on Apperception)