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.

Author: Mezizuru Fern
Country: Central African Republic
Language: English (Spanish)
Genre: Finance
Published (Last): 19 November 2011
Pages: 230
PDF File Size: 14.55 Mb
ePub File Size: 7.27 Mb
ISBN: 926-8-62913-625-5
Downloads: 58931
Price: Free* [*Free Regsitration Required]
Uploader: Kesar

Hebb,R. What happened after ?

Retrieved from ” https: This article has been cited by other articles in PMC. In the end, Cattell decided to withdraw his name from consideration for the award and wrote an open letter to the American Psychological Association defending himself and his work by saying that his statements were misinterpreted and taken out of context Cattell, ; see Tucker, Sixth, this proposal led Hebb to the hypothesis that intelligence has two components: It means lasting changes in the way one sees things, the way one approaches a problem.

He wrote a critical review of the literature on the effects of damage to the frontal lobes Hebb, and continued to work on the measurement of adult intelligence Hebb and Morton, Second, he suggested that new intelligence tests needed to be designed for testing adult clinical patients; particularly tests which have separate measures for different abilities.

A battery of language and non-language tests was also given and he scored within the normal range in all of these. The voyage of a laboratory, At the APA meeting, Cattell discussed his ideas on the differences between measuring intelligence in children and adults and how differences in intelligence quotients might depend on the nature of the tests given. Their scores were found to have increased significantly. The Sentinelese people who live on North Sentinel Island off the coast of India are unique in that they have had virtually no contact with the outside civilized world, and they retain a hunter-gatherer lifestyle in an isolated jungle.

Williams and Wilkins;37— He continued to say that: By using this site, you agree to the Terms of Use and Privacy Policy.

Fluid and Crystallized Intelligence

Actually, the hypothesis was formulated and discussed in detail in the original MS, and I discussed this with you and Crook on Thursday evening. The tests were designed to be non-verbal and instructions were given using a series of worked examples rather than verbal instructions.


In his address at the APA meeting, Hebb discussed the flaws in the use of adult intelligence tests such as the Stanford-Binet and Wechsler-Bellevue Scales for testing adult clinical patients.

Psychology and the Religious Quest: L’Annee Psychologique, 11, From tohe tested patients who had surgery of the temporal or frontal lobes to eradicate their epileptic seizures.

A second study conducted at the University of Technology in Hangzhou, China, supports Jaeggi’s results independently.

This is discussed in his paper on Cattell Allen, Search over articles on psychology, science, and experiments. By contrast, the other is invested in particular areas of crystallized skills which can be upset individually without affecting the others.

He focused on two problems in the development of adult intelligence tests: All four patients were given the Stanford Binet Test after their surgery, but only one patient was tested before surgery. Hebb papers MG in Montreal, Quebec. Increasingly difficult items involve a mix of puzzles that require fluid shifts in deduction, logic, and inference.

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. Crystallized ability consists of discriminatory habits long established in a particular field, originally through the operation of fluid ability, but not [sic] longer requiring insightful perception for their successful operation.

The two pages that Cattell sent to Hebb for his comments include the definition of fluid and crystallized intelligence as follows: Crystallized intelligence is indicated by a person’s depth and breadth of general knowledge, vocabulary, and the ability to reason using words and numbers.

Although they are properly a product of intellectual power, they are an important part of what we call intelligence. In this letter, Hebb was quite blunt. University of Illinois Press. The paper concludes with a discussion of Hebb and Cattell’s work on the measurement of intelligence after Hebb’s students also showed that there was an interaction between brain damage and environmental experience on intelligence in rats Lansdell, ; Smith,indicating that the physiological and environmental aspects of intelligence could be dissociated.

The essential point of fact, which led to my writing to you in the first place, is that I had publicly presented though not, in 15 min, with a discussion of all its implications an hypothesis which was identical except for wording with part of your hypothesis.


The remaining sections of this paper examine Hebb’s research on the measurement of intelligence in brain injured patients of different ages; the papers presented by Cattell and Hebb at the APA Meeting, and the correspondence between Cattell and Hebb which followed this meeting and led up to their publications.

Crystallized intelligence is easily and frequently measured in academic exams. Based on correspondence between Cattell, Hebb, and George Humphrey, Hebb’s head of department at Queen’s University in Kingston, Ontario, it is now possible to show how Cattell’s theory of fluid and crystallized intelligence was derived from Hebb’s theory of Intelligence A and Intelligence B. These theories of fluir 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.

With his letter, Hebb sent the original copy of his typed out APA presentation and underlined the sections, which Vluid had used in the new section of his paper.

Fluid and crystallized intelligence – Wikipedia

A closed-field intelligence test for rats. The Organization of Behavior: Despite Cattell’s feeling that he gave Hebb more credit than he was due, Hebb was overly gracious in not insisting that he had developed the ideas before Cattell.

Hebb, cp. Since Matrix Reasoning and Picture Concepts involve the use of visual stimuli and do not require expressive language, they are considered to be ad tests of Gf.

Are culture fair tests possible and necessary? Cattell to Hebb, September 25, 1. My views were based on two pieces of evidence not in Hebb’s field of research, and I had already discussed them with Thurstone and with Miles. They have to uncover the hidden rules of increasingly complex questions, but without relying on any crystallized skills they might have developed prior.