Based on the formal concept of "knowledge structures" originally proposed by Jean-Claude Falmagne and Jean-Paul Doignon, this book contains descriptions of methodological developments and experimental investigations as well as applications for various knowledge domains. The authors address three main topics:
* theoretical issues and extensions of Doignon & Falmagne's theory of knowledge structures;
* empirical validations of specific problem types and knowledge domains, such as sentence comprehension, problem solving in chess, inductive reasoning, elementary mathematical reasoning, and others; and
* application of knowledge structures in various contexts, including knowledge assessment, intelligent tutoring systems, and motor learning.
Unlike most other approaches in the literature in cognitive psychology, this book provides both a rigorous mathematical formulation of knowledge-related psychological concepts and its empirical validation by experimental data.

The book describes up-to-date applications and relevant theoretical results. These applications come from various places, but the most important one, numerically speaking, is the internet based educational system ALEKS. The ALEKS system is bilingual English-Spanish and covers all of mathematics, from third grade to the end of high school, and chemistry. It is also widely used in higher education because US students are often poorly prepared when they reach the university level. The chapter by Taagepera and Arasasingham deals with the application of knowledge spaces, independent of ALEKS, to the teaching of college chemistry. The four chapters by Albert and his collaborators strive to give cognitive interpretations to the combinatoric structures obtained and used by the ALEKS system. The contribution by Eppstein is technical and develops means of searching the knowledge structure efficiently.

Based on the formal concept of "knowledge structures" originally proposed by Jean-Claude Falmagne and Jean-Paul Doignon, this book contains descriptions of methodological developments and experimental investigations as well as applications for various knowledge domains. The authors address three main topics: * theoretical issues and extensions of Doignon & Falmagne's theory of knowledge structures; * empirical validations of specific problem types and knowledge domains, such as sentence comprehension, problem solving in chess, inductive reasoning, elementary mathematical reasoning, and others; and * application of knowledge structures in various contexts, including knowledge assessment, intelligent tutoring systems, and motor learning. Unlike most other approaches in the literature in cognitive psychology, this book provides both a rigorous mathematical formulation of knowledge-related psychological concepts and its empirical validation by experimental data.

The book describes up-to-date applications and relevant theoretical results. These applications come from various places, but the most important one, numerically speaking, is the internet based educational system ALEKS. The ALEKS system is bilingual English-Spanish and covers all of mathematics, from third grade to the end of high school, and chemistry. It is also widely used in higher education because US students are often poorly prepared when they reach the university level. The chapter by Taagepera and Arasasingham deals with the application of knowledge spaces, independent of ALEKS, to the teaching of college chemistry. The four chapters by Albert and his collaborators strive to give cognitive interpretations to the combinatoric structures obtained and used by the ALEKS system. The contribution by Eppstein is technical and develops means of searching the knowledge structure efficiently.

This book is a sign of its times. Each one of the chapters - papers written by European authors of various backgrounds- illustrates a departure from the style of theorizing that has been prominent in the behavioral and social sciences for most of the century. Until very recently, models for behavioral phenomena were chi~fly based on numerical representations of the objects of concern, e. g. the subjects and the stimuli under study. This was due in large part to the influence of nineteenth century physics, which played the role of the successful older sister, the one that had to be imitated if one wished to be taken seriously in scientific circles. The mystical belief that there could be science only when the objects of concern were susceptible of measurement in the sense of physics was a credo that could not be violated without risks. Another, more honor able justification was that the numerical models were the only ones capable of feasible calculations. (In fact, these models were typically linear. ) An early example of such theorizing in psychology is factor analysis, which attempted to represent the results of mental tests in a real vector space of small dimen sionality, each subject being represented by a point in that space. A dimension WaGBP interpreted as a scale measuring some mental ability. The analysis was simple, and only required an electrical desk calculator (with spinning wheels), and a suitable amount of determination.

Avec Une Lettre De M. F. A. Aulard, Preface Par Albert Regnard. This Book Is In French.

Avec Une Lettre De M. F. A. Aulard, Preface Par Albert Regnard. This Book Is In French.

Frank and Albert Dietrich were identical twins whose lives took very different directions during World War II. Drafted into the Army Air Corps and trained as a radio operator, Frank was shipped to the Philippines in 1945, where as a sergeant in the Fifth Air Force he prepared for the invasion of Japan. Albert, a pacifist, struggled mightily to become a conscientious objector and spent two years building dams, saving farmland, and helping the poor at Civilian Service Camps in South Dakota, Iowa, and Florida. Raised in a close, religious, Pittsburgh family, Frank and Albert were inseparable as boys, sharing a strong social conscience. Divided by war, they kept in touch by writing hundreds of letters to each other. The correspondence concerns everything from the daily drudgery of service-loneliness, lousy food-to heartfelt debates about war, peace, and patriotism. This absorbing selection of letters offers fresh perspectives on the American experience during World War II. The first published correspondence between GI and CO brothers, the letters are an uncommonly articulate chronicle of military service and life on the home front, including GI marriage and parenthood. Back and forth, Frank and Albert also argued about the uses of armed force and pacifist nonviolence in the face of fascism and Nazism. Frank Dietrich's letters from Manila are vivid descriptions of a liberated city under an uneasy occupation. Albert provides an insider's view of the pacifist experience, especially the protracted efforts pacifists often had to wage to obtain CO status. Together, the letters bring to life different ways Americans chose to serve their country during one of its most dangerous and demanding times.