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The Cattell–Horn–Carroll theory (commonly abbreviated to CHC), is a psychological theory on the structure of human cognitive abilities. Based on the work of three psychologists, Raymond B. Cattell, John L. Horn and John B. Carroll, the Cattell–Horn–Carroll theory is regarded as an important theory in the study of human intelligence.
John Leonard Horn (September 7, 1928 – August 18, 2006) was a scholar, cognitive psychologist and a pioneer in developing theories of intelligence. The Cattell-Horn- Carroll (CHC) theory is the basis for many modern IQ tests. Horn's parallel analysis, a method for determining the number of factors to keep in an exploratory factor analysis, is ...
Doctoral advisor. Francis Aveling, King's College London. Raymond Bernard Cattell (20 March 1905 – 2 February 1998) was a British-American psychologist, known for his psychometric research into intrapersonal psychological structure. [1][2] His work also explored the basic dimensions of personality and temperament, the range of cognitive ...
Parallel analysis, also known as Horn's parallel analysis, is a statistical method used to determine the number of components to keep in a principal component analysis or factors to keep in an exploratory factor analysis. It is named after psychologist John L. Horn, who created the method, publishing it in the journal Psychometrika in 1965. [1]
The horn effect, closely related to the halo effect, is a form of cognitive bias that causes one's perception of another to be unduly influenced by a single negative trait. [ 1 ] [ 2 ] [ 3 ] An example of the horn effect may be that an observer is more likely to assume a physically unattractive person is morally inferior to an attractive person ...
Projective tests. MeSH. D011386. In psychology, a projective test is a personality test designed to let a person respond to ambiguous stimuli, presumably revealing hidden emotions and internal conflicts projected by the person into the test. This is sometimes contrasted with a so-called "objective test" / "self-report test", which adopt a ...
B♭ alto — up a perfect fourth. A — up a major third. G — up a major second. E — down a minor second. E♭ — down a major second (used for horn on pitches with multiple sharps until Richard Strauss) D — down a minor third. C — down a perfect fourth. B♭ basso — down a perfect fifth. Some less common transpositions include:
Three-stratum theory. The three-stratum theory is a theory of cognitive ability proposed by the American psychologist John Carroll in 1993. [1][2] It is based on a factor-analytic study of the correlation of individual-difference variables from data such as psychological tests, school marks and competence ratings from more than 460 datasets.