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Direct linkLynn, Richard – Intelligence, 2009
New standardizations of the Coloured and Standard Progressive Matrices in Britain in 2007 and 2008 show that on the Coloured Progressive Matrices the intelligence of 4 to 11 year olds increased over the years 1982-2007 by 8 IQ points, representing a gain of 3.2 IQ points a decade, and on the Standard Progressive Matrices the intelligence of 7 to…
Descriptors: Intelligence, Intelligence Quotient, Measures (Individuals), Improvement
Peer reviewedLim, Tock Keng – Intelligence, 1988
Heim's AH4 Test of General Intelligence, Raven's Advanced Progressive Matrices, and two Piagetian formal operations tests (Shayer's Science Reasoning Tasks and Arlin's Test of Formal Reasoning) were administered to 459 15-year-olds attending Secondary three (grade nine) in Singapore. A hierarchical factor structure was found underlying all of…
Descriptors: Factor Structure, Formal Operations, Grade 9, High School Freshmen
