This document discusses perception and the perception process. It defines perception as the process of receiving information about and making sense of the world around us. This involves selecting information to notice, categorizing it, and interpreting it based on existing knowledge. The document outlines the key elements in perception like sensation versus perception. It also discusses the various subprocesses involved in perception like receiving stimuli, selective attention, perceptual organization, interpretation, and response. Finally, it examines factors that influence perception like characteristics of the perceiver, target, and situation as well as barriers to accurate perception.