The authors, all consultants and training specialists, advocate the use of human performance improvement (HPI), a tool they argue can help build intellectual capital and establish and maintain a "high- performance workplace, enhance profitability, and encourage productivity." They assert that most workplace problems stem from the environment in which workers perform rather than in the individuals who perform the work and that correcting the workplace environment can lead to maximum profitability. Annotation c. Book News, Inc., Portland, OR (booknews.com)