Topics covered include the role of IQ at work as the best predictor of success, but also the importance of increasingly recognized social intelligences such as emotional intelligence (EQ). The significance of personality traits and the impact of temperaments on work performance are also examined, and the methods used to assess work behaviour and potential are reviewed. Psychological tests, which measure personality traits, are questioned as accurate predictors of behaviour at work, alongside other factors such as job satisfaction, productivity, absenteeism and turnover. This thoroughly revised and updated edition of provides a comprehensive review of the relevant literature from psychology, sociology and management science. It will be of interest to students of organizational psychology and business and management studies, as well as HR professionals.