"...it must be stressed, that the authors of all presented studies took a great care clarifying the methodology in addition to the compact, conscientious, theoretical introduction. All researchers are unified by form, give a detailed, precise study and propose further possible applications of the presented models or techniques at the end of each chapter with a full list of references....The book is the source of the most genuine knowledge on the subject, and it is suitable for these readers requiring a thorough study."—Polish Psychological Bulletin