An excellent technical resource for psychologists, explaining therapy from the Behaviorist school. I consider Wolpe the master of this topic, clarifying the issues and terms. It is rather dry and it is not a good introduction for the general reader. However, every psychologist should have at least a passing familiarity with Wolpe's writing, as his does justice to the school.
Perhaps Wolpe has done better writing, but this book serves its purpose well.