Cattell, R. B. (). Theory of fluid and crystallized intelligence: A critical experiment. Journal of Educational Psychology, 54(1), /. Crystallized Intelligence: Examples & Definition . These two tasks illustrate two different types of intelligence proposed by Raymond Cattell known as ‘fluid Psychology has offered many theories about intelligence over the. Charles Spearman’s noted student Raymond Cattell expanded on Spearman’s theory of a unified g and explored the difference between two independent but.

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Fluid and crystallized intelligence are discrete factors of general intelligenceor g.

This whole business distresses me, and I wish you would write to let me flid at once if you think this [is] claiming too much. In contrast to CattellHebb’s hypothesis was the opposite of that proposed by Lashley who found fewer effects of early as opposed to late brain injury.

It increases until adolescence and then slowly declines. Share this page on your website: Acknowledgments I am indebted to Bem Allen of the Western Illinois University for his letter inquiring about the relationship between Cattell’s theory and Hebb’s research on adult intelligence and for his comments on an earlier draft of the manuscript. Hebb, cp.

The development of verbal and non-verbal tests of intelligence for adults was Hebb’s attempt to dissociate the aphasic and non-aphasic syndromes following adult brain injury Hebb, Naturally Hebb and I in discussion gained clarifications, but this would have happened if I had discussed the same matter with any other man of Hebb’s intelligence and liking for the subject.


In Cattell’s autobiographical writings and in those of his biographers, it is stated that Cattell developed the concepts of fluid and crystallized intelligence in, or Crystallized ability and Piaget’s treatment of everyday learning reflect the impress of experience. These theories of intelligence and the many tests developed by Cattell during his academic career were, unbeknownst to many in the field, used as an important source of empirical support for his radical socio-religious beliefs.

The Science and Ethics of Assessment”.

Fluid and crystallized intelligence – Wikipedia

Views Read Edit View history. Intelilgence, November 15, Cattell’s presentation at the APA Meeting was a factor analysis of the concept of socioeconomic social status Cattell, b. The origin of mind: Received Oct 8; Accepted Nov The effects of restricting early experience on the problem-solving capacity of dogs.

Therefore, the choice of where to invest this ability may come down to idiosyncratic features.

Fluid and Crystallized Intelligence

Open Letter to the APA. In the Matrix Reasoning test, children are presented a series or sequence of pictures with one picture missing.

It maps these against suitable work environments according to Elliott Jacques Stratified Systems Theory. Higher level difficulty in verbal test material [Abstract].

Fluid and crystallized intelligence

But the Sentinelese child will have vastly different crystallized intelligence compared to the intellgience, westernized child such a test was designed for. Check out our quiz-page with tests about: The process of acquiring factual knowledge is sometimes called ” cognitive investment.


While Gc increases steadily with age, there does come a point where the rate of forgetting is faster than the rate of acquiring new knowledge! Cattell, October 11, 1. Fluid intelligence generally correlates with measures of abstract reasoning and puzzle solving.

In the Analysis-Synthesis test, the individual has to learn and orally state the solutions to incomplete logic puzzles that mimic a miniature mathematics system. Since Matrix Reasoning and Picture Concepts involve the use of visual stimuli and do not require expressive language, they are considered to be non-verbal tests of Gf. He then compared the scores of American-born and immigrant children on his culture-free test and three other tests of intelligence: In the growing child, the various abilities mature at about the same rate; they are correlated, and the concept of a general level [of intelligence] is useful.

In this letter, Hebb was quite blunt.