DescriptionPsychologists tell us that people routinely make systematic mistakes in their reasoning. This course uncovers some of the most common mistakes. It provides methods which help us to avoid bad reasoning. We examine examples of bad reasoning from many sources, including letters to the editor, advertisements and political debates. This course uses some basic philosophical tools and concepts from Logic but there is very little use of symbols and no Mathematical Logic. Students who want to obtain a satisfactory passing grade for this course should have a mastery of both written and spoken English.