This document provides a literature review on consumer attitudes and perceptions. It defines key concepts such as perception, which is how consumers process and interpret marketing stimuli, and attitude, which consists of cognitive, affective, and behavioral components regarding a brand or product. The review discusses how perceptions are formed based on stimulus characteristics and consumer traits, and how attitudes develop from beliefs, feelings, and purchase intentions influenced by personal experience and marketing. It establishes a theoretical framework for understanding consumer behavior relevant to the project.