<EM>Psychology in Prisons</EM> illustrates how a knowledge of psychological principles can lead to a better understanding of the prison environment and the problems that occur within it. The authors show how psychology can be used to increase understanding of prisoners and to deal with day-to-day problems in prison life. They focus on key problem areas such as sex offenders, violent criminals and the issue of AIDS. The book also explores the effects of the prison environment on staff and suggests means of reducing the levels of stress.