Labels:bulletin board | sky | vegetarianism OCR: How far is intelligence determined by the genes you inherit? There appears therefore to be a large genetic component in the determination of ithe variation of intelligence test scores in populations 65% of the in the Western countries where these studies were carried out variation in 10 in Western this has been calculated statistically at 65% arises from populations But no reputable psychologist or biologist would think of i intelligence genetic factors as being exclusively environmentally or genetically determined There combination of both factors Three further points .t makes sense to think of there being a genetically determined limit as to how intelligent an individual .lt cannot be assumed because there isa genetic component in the variance of intelligence test scores within populatio ...