It seems the level of intelligence is determined by a few genes. This must surely be too simplistic, particularly because specialists cannot agree on what intelligence is. How do you compare memorizing general knowledge to the skill of knitting a fine jumper? There are people who know just about everything about Australian rugby league, but this is their only area of expertise.
Finding will be made easier, apparently, by questioning the crowd rather that by brain scans, etc. It is believed that the sought after genes affect brain size. Considering that Neanderthals had larger brains than modern man, this seems to be the wrong hypothesis to start with.
While "the team" is sure they will find the genes they do admit that culture, education, health and upbringing can affect intelligence. How are they going to filter these things out? Obviously they can't. Twenty one thousand subjects were catalogued and brain imaging was used. Strangely, when the team was reaching its conclusions they discovered that another group was doing the same research with more people. Now that is clever.
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