Calculated NAEP based cognitive ability scores in IQ from 1978/80 to 2012.
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NAEP: National Assessment of Educational Progress. Due to alternating surveys, the survey 1978 (mathematics) and 1980 (reading) combined, 1982 (mathematics) and 1984 (reading) combined, 1986 (mathematics) and 1988 (reading) combined. Benchmark: White 1978/80 average in reading and mathematics. Based on the oldest age-group, the 17-year-old students. Average calculated based on ethnic proportions of survey participants.Calculated NAEP based cognitive ability scores in IQ from 1978/80 to 2012.
创建时间：
2015-12-03
