The book is devoted to the psychology of decision making - a topic located at the intersection of cognitive and social psychology and practically not covered in modern literature. The author analyzes in an accessible form the features of perception, memory, decision-making models, the social side of assessment, choice and decision-making, and typical situations. The book is filled with real-life examples, tests and unique exercises. It will help the reader understand the mechanism of forming assessments and making decisions, and therefore avoid many mistakes, miscalculations and traps that await him along this path.