Raven's Progressive Matrices
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Raven's Progressive Matrices (often referred to simply as Raven's Matrices) are multiple choice tests of abstract reasoning, originally developed by Dr John C. Raven in 1938.[1] In each test item, a candidate is asked to identify the missing segment required to complete a larger pattern. Many items are presented in the form of a 3x3 or 2x2 matrix, giving the test its name.
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[edit] Versions
The matrices are offered in three different forms for participants of different ability:
- Standard Progressive Matrices: These were the original form of the matrices, first published in 1938. The booklet comprises five sets (A to E) of 12 items each (e.g. A1 through to A12), with items within a set becoming increasingly difficult, requiring ever greater cognitive capacity to encode and analyze information. All items are presented in black ink on a white background.
- Coloured Progressive Matrices: Designed for younger children, the elderly, and people with moderate or severe learning difficulties, this test contains sets A and B from the standard matrices, with a further set of 12 items inserted between the two, as set Ab. Most items are presented on a coloured background to make the test visually stimulating for participants. However the very last few items in set B are presented as black-on-white — in this way, if participants exceed the tester's expectations, transition to sets C, D, and E of the standard matrices is eased.
- Advanced Progressive Matrices: The advanced form of the matrices contains 48 items, presented as one set of 12 (set I), and another of 36 (set II). Items are again presented in black ink on a white background, and become increasingly difficult as progress is made through each set. These items are appropriate for adults and adolescents of above average intelligence.
In addition, so-called 'parallel' forms of the standard and coloured progressive matrices were published in 1998. This was to address the problem of the Raven's Matrices being too well-known in the general population. The fact that testees have grown increasingly experienced with the Ravens over the last 60 years could explain the increases in scores of around 10 IQ points per generation (see Flynn effect). Items in the parallel tests have been constructed such that average solution rates to each question are identical for the classic and parallel versions. An extended form of the standard progressive matrices, Standard Progressive Matrices Plus, was published at the same time, offering greater discrimination among more able young adults.
[edit] Underlying factors
According to their author, Raven's Progressive Matrices and Vocabulary tests measure the two main components of general intelligence (originally identified by Spearman): the ability to think clearly and make sense of complexity, which is known as eductive ability (from the Latin root "educere", meaning "to draw out") and the ability to store and reproduce information, known as reproductive ability.
Adequate standardization, ease of use (without written or complex instructions), and minimal cost per person tested are the main reasons for its widespread international use in most countries of the world.[citation needed]. It has among the highest predictive validities of any test in most occupational groups and, even more importantly, in predicting social mobility, the level of job a person will attain and retain.[citation needed] As a test of individuals it can be quite expensive. However, the per person cost can be much lower, because the test booklets are re-usable and can be used up to 50 times each.[citation needed]
The authors of the manual recommend that, when used in selection, RPM scores are set in the context of information relating to Raven's framework for the assessment of competence.
Some of the most fundamental research in cognitive psychology has been carried out with the RPM. The tests have been shown to work - scale - measure the same thing - in a vast variety of cultural groups.[citation needed] Two remarkable, and relatively recent, findings are that, on the one hand, the actual scores obtained by people living in most countries with a tradition of literacy - from China, Russia, and India through Europe to Kuwait - are very similar at any point in time.[citation needed] On the other hand, in all countries, the scores have increased dramatically over time ... such that 50% of our grandparents would be assigned to special education classes if they were judged against today's norms (see Flynn effect). Yet none of the common explanations - access to television, changes in education, changes in family size etc. - hold up. The explanation seems to have more in common with those put forward to explain the parallel increase in life expectancy ... which has doubled over the same period of time.[citation needed]
John Carlyle Raven first published his Progressive Matrices in the United Kingdom in 1938. His three sons established Scotland-based test publisher J C Raven Ltd. in 1972. In 2004, Harcourt Assessment, Inc. a division of Harcourt Education acquired J C Raven Ltd.
[edit] Critiques and Responses
Richard Nisbett, a Distinguished University Professor at the University of Michigan who studies cognition and social psychology, has criticized use of the test in African countries. "To use an instrument developed in the West on semi and possibly illiterate people is a fool's errand. Then they use the results to say that half the people in Africa are mentally retarded. It's laughable." [2]
Steven F. Cronshaw, Leah K. Hamilton, Betty R. Onyura and Andrew S. Winston published a response to Rushton, Skuy and Bons in 2006 in which they challenged the methodology that had been employed, especially the use of "non-equivalent groups in test samples". [3]
Arthur Jensen, Professor Emeritus of Educational Psychology at the University of California, Berkeley, has called Raven's Progressive Matrices "one of the best tests for measuring g," the general intelligence factor that all IQ tests measure to a greater or lesser degree. He also said that it is a test of inductive reasoning, unadulterated by verbal, numerical, spatial, mechanical, or musical interference. [4]
In 2007 M. Dawson, I. Soulières, M. A. Gernsbacher and L. Mottron provided evidence that autistics score relatively higher in Raven's tests than in Wechsler tests. In addition the autistics were providing correct answers to the Raven's test in less time, though erring as often as non-autistics.[5]
[edit] Notes
- ^ Raven, J.C. (1938). Progressive matrices: A perceptual test of intelligence. London:H.K. Lewis.
- ^ Stephen Metcalf. Dissecting the IQ Debate. Slate. Retrieved on 2008-01-15.
- ^ Case for Non-Biased Intelligence Testing Against Black Africans Has Not Been Made: A Comment on International Journal of Selection and Assessment 14 (3), 278–287.
- ^ A Conversation With Arthur Jensen, American Renaissance, vol. 3 no. 8, August 1992
- ^ Dawson M et al (2007). "The Level and Nature of Autistic Intelligence". Psychological Science 18 (8): 657–62. doi:.
[edit] References
- Raven, J., Raven, J.C., & Court, J.H. (2003). Manual for Raven's Progressive Matrices and Vocabulary Scales. Section 1: General Overview. San Antonio, TX: Harcourt Assessment.
[edit] External links
- Website of Dr. John Raven
- Raven's Progressive Matrices via Harcourt website
- A test that mimics Raven's Advanced Progressive Matrices
- samples of iq tests based on Raven's matrices
- Autistic children on average scored 30 percentile points higher than on the Wechsler scales of intelligence.
- Truth About Autism: Scientists Reconsider What They Think They Know
- Free IQ test with matrices like Raven's Matrices
- Interview with Arthur Jensen, part I
- Interview with Arthur Jensen, part II
