Originally published in 1965 this book was an introduction to post-Freudian methods of diagnosing and treating neurotics of the time. These methods were known collectively as behaviour therapy, a term indicating their derivation from modern behaviourism, learning theory, and conditioning principles. In the early twentieth century John B. Watson pointed out that psychology, as the behaviourist views it, is a purely objective experimental branch of natural science. Its theoretical goal is the prediction and control of behaviour. Behaviour therapy attempts to extend this control to the field of neurotic disorders, and in doing so it makes use of experimental laboratory findings, and of theories based on these. It was seen as the very opposite of the position taken by psychoanalysis.

The authors believed that, by the late twentieth century, behaviour therapy would be firmly established as one of the most important, if not "the" most important, weapon in the hands of psychiatrists and clinical psychologists ."

Originally published in 1976 and on the basis of extended case histories, Eysenck showed how experts dealt with problems which arose in the course of behaviour therapy. It showed how they formulated hypotheses about causation and treatment, and used these to structure the methods employed; and how they changed their hypotheses when treatment showed them to have been mistaken. The prime aim was to demonstrate the complexities involved in even apparently simple cases, and the need to base treatment on a proper understanding of the dynamics of the case. All the articles were specially written for this book, the purpose being to underline the need to state the dynamics of a case in such a form that they could be used as hypotheses leading to specific treatment recommendations. The hypotheses were tested by the success or failure of the treatment, thus making the treatment of individual patients a proper experimental procedure.Behaviour therapy emphasises the fundamental importance of the outcome problem and only experience can teach the behaviour therapist just how this interplay of theory formulation and design of location, evaluation of effect and changes in theory, works in actual practice. The book will help those engaged in this type of therapy to understand the process better, and to gain a quicker mastery of the technique.

When "Crime and Personality" was first published in 1964, J.A.C. Brown, writing in the New Statesman, commented: There can be no doubt of the importance of Professor Eysenck s book on the nature and treatment of criminal behaviour. This third edition originally published in 1977 had been completely revised and brought up to date, and although the major theory linking personality and crime has been retained, many of the details have been changed in conformity with recent research of the time.

The book presents a theory concerning the personality of criminals, and offers evidence to show that these personality features characterising criminals are based on genetic foundations. It is argued that criminality as a whole is not exclusively based on environmental factors as has so often been suggested, but has a strong biological basis. A good deal of evidence is reviewed showing that there are many data supporting this view, from studies of identical and fraternal twins, adopted children, and comparisons between criminals and non-criminals both in the Western world and in Communist countries.

Professor Eysenck suggests that important consequences follow from such an attempt to redress the one-sided emphasis on environmental factors which had been so characteristic of the previous fifty years, and some of these consequences are described in detail. He further suggests that only proper understanding of the psychological factors making for antisocial behaviour will help in reversing the increasing burden that criminality places upon society. The book also takes issue with political arguments of the time regarding the origins of criminality, and shows that criminals behind the Iron Curtain show the same personality characteristics as do criminals in Western countries."

Originally published in 1960 these two volumes report a number of experiments in psychogenetics, psychopharmacology, psychodiagnostics, psychometrics and psychodynamics, all of which formed part of the programme of research which had been developing from the late 1940s at the Maudsley Hospital. Presenting the studies together in a book, rather than the more usual route of journal articles, was itself felt to be an experiment at the time, especially given the wide area covered. The decision was deliberate because all the studies reported formed part of a larger whole, which would have been lost if published separately.

Volume I looks at psychogenetics and psychopharmacology.

Originally published in 1960 these two volumes report a number of experiments in psychogenetics, psychopharmacology, psychodiagnostics, psychometrics and psychodynamics, all of which formed part of the programme of research which had been developing from the late 1940s at the Maudsley Hospital. Presenting the studies together in a book, rather than the more usual route of journal articles, was itself felt to be an experiment at the time, especially given the wide area covered. The decision was deliberate because all the studies reported formed part of a larger whole, which would have been lost if published separately.

Volume II looks at psychodiagnostics, psychodynamics and psychometrics.

Originally published in 1965 this book was an introduction to post-Freudian methods of diagnosing and treating neurotics of the time. These methods were known collectively as 'behaviour therapy', a term indicating their derivation from modern behaviourism, learning theory, and conditioning principles. In the early twentieth century John B. Watson pointed out that 'psychology, as the behaviourist views it, is a purely objective experimental branch of natural science. Its theoretical goal is the prediction and control of behaviour.' Behaviour therapy attempts to extend this control to the field of neurotic disorders, and in doing so it makes use of experimental laboratory findings, and of theories based on these. It was seen as the very opposite of the position taken by psychoanalysis. The authors believed that, by the late twentieth century, behaviour therapy would be 'firmly established as one of the most important, if not the most important, weapon in the hands of psychiatrists and clinical psychologists'.

When Crime and Personality was first published in 1964, J.A.C. Brown, writing in the New Statesman, commented: 'There can be no doubt of the importance of Professor Eysenck's book on the nature and treatment of criminal behaviour.' This third edition, originally published in 1977, had been completely revised and brought up to date, and although the major theory linking personality and crime has been retained, many of the details have been changed in conformity with recent research of the time. The book presents a theory concerning the personality of criminals, and offers evidence to show that these personality features characterising criminals are based on genetic foundations. It is argued that criminality as a whole is not exclusively based on environmental factors as has so often been suggested, but has a strong biological basis. A good deal of evidence is reviewed showing that there are many data supporting this view, from studies of identical and fraternal twins, adopted children, and comparisons between criminals and non-criminals both in the Western world and in Communist countries. Professor Eysenck suggests that important consequences follow from such an attempt to redress the one-sided emphasis on environmental factors which had been so characteristic of the previous fifty years, and some of these consequences are described in detail. He further suggests that only proper understanding of the psychological factors making for antisocial behaviour will help in reversing the increasing burden that criminality places upon society. The book also takes issue with political arguments of the time regarding the origins of criminality, and shows that criminals behind the Iron Curtain show the same personality characteristics as do criminals in Western countries.

Originally published in 1960, the two volumes of Experiments in Personality report a number of experiments in psychogenetics, psychopharmacology, psychodiagnostics, psychometrics and psychodynamics, all of which formed part of the programme of research which had been developing from the late 1940s at the Maudsley Hospital. Presenting the studies together in a book, rather than the more usual route of journal articles, was itself felt to be an experiment at the time, especially given the wide area covered. The decision was deliberate because all the studies reported formed part of a larger whole, which would have been lost if published separately. Volume I looks at psychogenetics and psychopharmacology.

Originally published in 1976 and on the basis of extended case histories, Eysenck showed how experts dealt with problems which arose in the course of behaviour therapy. It showed how they formulated hypotheses about causation and treatment, and used these to structure the methods employed; and how they changed their hypotheses when treatment showed them to have been mistaken. The prime aim was to demonstrate the complexities involved in even apparently simple cases, and the need to base treatment on a proper understanding of the dynamics of the case. All the articles were specially written for this book, the purpose being to underline the need to state the dynamics of a case in such a form that they could be used as hypotheses leading to specific treatment recommendations. The hypotheses were tested by the success or failure of the treatment, thus making the treatment of individual patients a proper experimental procedure. Behaviour therapy emphasises the fundamental importance of the outcome problem and only experience can teach the behaviour therapist just how this interplay of theory formulation and design of location, evaluation of effect and changes in theory, works in actual practice. The book will help those engaged in this type of therapy to understand the process better, and to gain a quicker mastery of the technique.

Originally published in 1960, the two volumes of Experiments in Personality report a number of experiments in psychogenetics, psychopharmacology, psychodiagnostics, psychometrics and psychodynamics, all of which formed part of the programme of research which had been developing from the late 1940s at the Maudsley Hospital. Presenting the studies together in a book, rather than the more usual route of journal articles, was itself felt to be an experiment at the time, especially given the wide area covered. The decision was deliberate because all the studies reported formed part of a larger whole, which would have been lost if published separately. Volume II looks at psychodiagnostics, psychodynamics and psychometrics.

In view of the practical importance of neurotic disorders (with something like one-third of the population suffering such dis turbances at some time of their lives) and the equally great theoretical importance of types of behaviour that clearly seem to contradict both common sense and the law of effect, one might have expected that psychologists would develop consis tent and testable theories of neurosis and that there would be many textbooks outlining these theories and describing the experiments done to test them. Oddly enough nothing of the kind seems to have happened. There is a dearth of theories of neurosis; those that do exist are not usually put in a readily testable form, and the amount of research that has been done in order to test these theories is nothing like as large as one might have hoped. Nor are there many books setting out the various theories, the arguments for and against and the empiri cal evidence; in fact, this may be the only book to have under taken this task in the past 20 or 30 years. It is fortunate that the author has succeeded in what is an extremely difficult and complex task. He has examined issues and theories dispassionately and impartially, has clarified the contradictions inherent in most theories and has wisely refused to come to any kind of final judgment about the adequacy of the given theories."

H. J. Eysenck The concept of 'intelligence' has been with isfactory state of the concept of intelligence. Cronbach (1957), in his well-known presi- us for a long time. Some two thousand years ago, Plato and Aristotle singled out cogni- dential address to the American Psychologi- tive from orectic factors in behaviour, and cal Association, referred to the two discip- lines of scientific psychology, meaning the Cicero coined the term 'intelligentia', which has since assumed such universal accep- experimental and the correlational. He ad- tance. It is only in recent years, of course, vocated their unification; only by joining that psychologists have attempted to define together in the attempt to build a truly sci- the concept more closely, to carry out exper- entific psychology could such an objective iments, and to try and measure it. The result be achieved. has been rather curious. On the one hand My own view has always been the same we have the overwhelmingly successful ap- (Eysenck 1967 a), and in the companion vol- plication of measures of IQ in education, ume to the present one, I have tried to show industrial selection, vocational guidance, of- how such a unification can be brought ficer selection, and many other areas. On about in the attempt to construct A Model the other we have large-scale criticism of for Personality (Eysenck 1981 a).

H. J. Eysenck This book is not an introduction to personality research, it is not a textbook, and above all it is not a model of personality. The title, A Modelfor Personality, was chosen on purpose to indicate that we are here concerned with a discussion of how models in this field ought to be constructed, what their functions were, and whether such models or paradigms could with advantage be produced at this stage of development. One particular aspect of personality, extraversion introversion (E), has been chosen to exemplify the desiderata which emerge from such a discussion. It is not suggested that personality and E are synonymous - merely that this particular dimension is perhaps better known than any other, has had more experimental work done on it than any other and has acquired a better theoretical substructure, and more links with genetics and physiology, than any other. Hence it seems most likely to serve as an example of how a satisfactory model of personality might ultimately be constructed, i. e. by analogy with E. Other dimensions of personality, such as neuroticism-stability or psycho tic ism-superego functioning, are mentioned in the discussion, but only when they overlap or interrelate with E. The book uses E as an example to illustrate the way in which a model of personality can be constructed, but it is in no way a summary of all that is known about E."

Originally published in 1953, this third edition was first published in 1970. It was one of the early attempts at bringing together theories of personality organisation and finding empirical evidence to test their hypotheses. This third edition includes additional chapters and updated references to current research of the time. It is a particular feature of this book that a large number of figures are reproduced in the text; this is essentially a consequence of the writer's belief that diagrammatic representations are better suited to the transmitting and remembering of information than are words or numbers. The first chapter outlines the theories and discusses some of their implications, the second and third look at methods of analysis and projective techniques, while the rest of the book is devoted to a critical presentation of the evidence, arranged according to the technique employed - rating, self-rating, objective testing, constitutional assessment, autonomic measurement, and so on. Today it can be read and enjoyed in its historical context.

Originally published in 1953, this third edition was first published in 1970. It was one of the early attempts at bringing together theories of personality organisation and finding empirical evidence to test their hypotheses. This third edition includes additional chapters and updated references to current research of the time. It is a particular feature of this book that a large number of figures are reproduced in the text; this is essentially a consequence of the writer's belief that diagrammatic representations are better suited to the transmitting and remembering of information than are words or numbers. The first chapter outlines the theories and discusses some of their implications, the second and third look at methods of analysis and projective techniques, while the rest of the book is devoted to a critical presentation of the evidence, arranged according to the technique employed - rating, self-rating, objective testing, constitutional assessment, autonomic measurement, and so on. Today it can be read and enjoyed in its historical context.

Genius: The Natural History of Creativity presents a novel theory of genius and creativity that is based on the personality characteristics of creative persons and geniuses. Starting with the fact that genius and creativity are frequently related to psychopathology, this book brings together many different lines of research into the subject. Professor Eysenck provides experimental evidence to support these theories in their application to creativity. He considers the role of intelligence, social status, gender, and many other factors that have been linked with genius and creativity. His theory traces creativity from DNA through personality to special cognitive processes to genius. The book will generate a great deal of interest in the fields of psychology, psychiatry, philosophy, and sociology.