From the reviews: Dr. Niskanens work opens new vistas in application of soft computing, fuzzy logic and fuzzy set theory to the human sciences. This book is likely to be viewed in retrospect as a landmark in its field - Lotfi A. Zadeh, University of California, Berkeley. Niskanen ... breaks new ground in soft computing, and his book is one of just a few studies that focus on soft computing methods and fuzzy logic with respect to applications in the human sciences, namely, the social and behavioral sciences. ... Numerous figures and tables provide useful information throughout. Summing Up: Highly recommended. Upper-division undergraduates through faculty. (D. J. Gougeon, CHOICE, April, 2004)