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The matrices are offered in three different forms for different ability levels, and for age ranges from five through adult:
According to their publisher, "The matrices measure two complementary components of general intelligence: the ability to think clearly and make sense of complex data, which is known as deductive ability; and the ability to store and reproduce information, known as reproductive ability." Adequate standardization of RPM is cited as a major factor for its widespread use. It appears to measure a type of reasoning ability which appears to be useful in the mathematical area. Thus, has the predictive validity for quantifying the mathematical mind of a person. Although it is criticized for being costly, it provides a differentiated information about a student's range of hidden abilities that maybe useful for a potential academic success. The inclusion of the RPM in an identification battery broadens the range of abilities assessed. 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. acquired J C Raven Ltd. External links
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