|Original language||English (US)|
|Title of host publication||The Encyclopedia of Clinical Psychology|
|Editors||Robin L Cautin, Scott O Lilienfeld|
|Publisher||John Wiley & Sons, Inc.|
|State||Published - 2015|
Raymond Bernard Cattell (1905–98) was one of the most prolific and important psychologists of the twentieth century. His contributions to theories of personality, intelligence, and psychometrics were and remain very influential to this day. He and Hans Eysenck (1916–97) were the two major contributors to the scientific study of personality in the mid- to late twentieth century. The distinctions he drew between crystallized and fluid intelligence, and between state and trait personality, as well as the multitude of psychometric innovations he developed have become embedded in the psychological armamentarium, perhaps without recognition.