Social class is a compelling issue and important issue. Many problems are connected to it - crime, poverty, ill health, mental disorder and political unrest, for example. Just how and why is our behaviour influenced by our social class? In his latest book leading social psychologist Michael Argyle gives a detailed account of class differences in relationships, sex, work and leisure, religion, crime, speech, values, social mobililty and a host of other fascinating areas to provide the first account of the psychology of class difference for many years.