Four-pronged Perception

In predicting the responses of a user, a designer is generally unconcerned with the lower-level processes that will guide the user to a particular response. The four-pronged model of perception is a reworking of the popular theories of environmental psychology to create a coherent model the designer can use during the design process to predict the reaction of the user. We don't make any guarantee that the four pronged model isn't a tool of the devil whose use will lead you into the bowels of... that is, we can not make any guarantees about whether the system is a true model of the human perceptual system.