Second , researchers have different concepts regarding intelligence . Charles Spearman (1904 1927 ) proposed that there is a largely innate general ability (called g ) that is distributed unequally in humans . G is the ability to reason and to educe (draw out ) correlates . It is the ability to abstract , to see similarities and differences , and to extrapolate trends . The major rationale of most traditional IQ tests is that they tap g by assembling a variety of mental tasks . Outstanding achievers need a high...











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