Personality Assessment

by Philip E. Vernon

Published December 1964

Originally published in 1964, the aim of this book was to analyse the psychological processes involved in understanding personality, and to consider how the psychologist could help in making more accurate assessments.

Professor Vernon discusses in detail the scientific status of psychoanalytic and other 'depth' theories of motivation, the value of different types of psychotherapeutic treatment and counselling, the influence of upbringing on the development of personality, and the effectiveness of projective techniques. He also examines the reasons for the highly variable results obtained with personality tests and questionnaires.

As well as providing a balanced review of theories of personality and of various types of test, this work made a fresh contribution to developing improved techniques of assessment.


Originally published in 1953 this book provided the first comprehensive account of methods of personality assessment by a British author. It starts with a short survey of personality theory, pointing out the difficulties in any method of testing or assessment. Next it describes the weaknesses of the common interview method. (Throughout the emphasis is on methods which are usable in educational or vocational guidance and selection, not on methods which are mainly of scientific interest.) Thereafter it takes up each main type of technique – tests based on physique or psychological measures, on expressive movement such as gestures and handwriting, tests of behaviour (including War Office Selection Board ‘house party’ methods), ratings and rating scales, questionnaires, and so-called projective techniques. The evidence for or against each test or method is surveyed and numerous references provided for relevant literature. Illustrative excerpts are given of many of the more promising tests, and some pictorial illustrations. British work in this field at the time is covered completely, and an attempt is made to provide a fair summary of the main contributions of American and other psychologists of the day.


First published in 1950, this revised edition of The Structure of Human Abilities was published in 1961, but remained largely unchanged from the original save for an additional supplement on the developments in factorial work on human abilities from 1950-1959.

Much research had been carried out during the years leading up to publication, in England and America, into mental abilities; and modern methods of statistical treatment, especially factor analysis, had been increasingly used.

It was felt that the mass of diverse material was apt to confuse the student of psychology of the time, especially as the results of such research were often apparently conflicting. Professor Vernon, one of the leading experts in this branch of psychology, sifted the material and attempted to provide a consistent picture of our mental structure.