This chapter discusses perception and individual decision making. It defines perception as how individuals organize and interpret sensory impressions to make meaning of their environment. People's behavior is based on their perceptions, not objective reality. The chapter also examines factors that influence perception, such as attribution theory and biases. It then discusses the rational decision making model and how decisions are actually made, noting limitations like bounded rationality. Common biases in decision making are explored, along with ways to potentially improve the decision making process.