"Some of the broad conclusions are listed below (please note that these are close paraphrases of the article's abstract). * The extent to which genes matter to intelligence varies by social class (genetic inheritance matters more if you're wealthy, less if you're poor). * Almost no genetic polymorphisms have been discovered that are consistently associated with variation of IQ in the normal range. * "Crystallized" and "fluid" intelligence are different, both behaviorally and biologically. * The importance of the environment for IQ is established by the 12 to 18 point increase in IQ observed when children are adopted from working-class to middle-class homes. * In most developed countries studied, gains on IQ tests have continued, and they are beginning in the developing world * Sex differences in some aspects of intelligence are due partly to biological factors and partly to socialization factors. * The IQ gap between Blacks and Whites in the US has been reduced by 0.33 standard deviations in recent years. ¶ The article is well worth reading in its entirety. Download it here: http://scottbarrykaufman.com/wp-cont... - × × ×