L. L. Thurstone: A new assessment

Most psychologists have heard of Thurstone, and know him as a pioneer of mathematical psychology and factor analysis. But his appearances in history books are rare and peripheral, as a man of technical prowess rather than intellectual achievement, and at best he is seen as a link in the tradition culminating in signal detection and mathematical learning theory. Nineteen eighty-seven is the centenary of his birth, so it is a timely moment to correct this picture. Thurstone was influenced by G. H. Mead, and his work is best placed within the pragmatist movement, not as moving towards the mechanistic psychology that now dominates psychology. Viewed in this way, his true status and the reasons for his relative neglect become apparent. This is illustrated by a detailed consideration of his mathematical learning models.