The document discusses the perception process and its role in consumer behavior. It describes perception as the method by which individuals select and interpret environmental data to create their understanding of the world through their senses. The perception process involves four stages: sensation, where the senses are exposed to stimuli; attention, when mental processing is given to certain stimuli; interpretation, when meaning is assigned to the sensory input; and retention, when information is stored in memory. Marketers aim to guide consumers through these stages to build awareness, understanding and memory of their products and brands.