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First published July 23, 1998
Children speaking Asian languages do consistently better at mathematics than English-speaking children and their number words reflect a base-10 system (e.g. 12 is represented as ‘ten-two’). First year school children from three Asian and three Western countries were asked to stack blue blocks, representing 10 units, and white blocks representing 1 unit, into piles to show particular numbers. More Asian than Western children
made two correct constructions for each number. The Asian children used two blocks representing 10 units more than the Western children, and the Western children used the single-unit blocks more than the Asian children.
Conclusion: language differences may influence mathematical skills.
The evidence is strengthened by the finding that bilingual Asian- American children also score more highly on mathematical tests than do those who speak only English.
When intelligence was measured repeatedly in the same people there was no evidence that it declined with age; rather, it increased slightly for those who continued to use their minds. Similarly, the supposed deterioration of memory with age does not stand up well to scientific investigation but suggests that the system responds to the demands you make of it. Comparisons of memory for everyday events show that older people perform slightly better than younger ones, possibly because they are more concerned about their memories and are more attentive and motivated during testing. The belief that memory declines with increasing age was described as a myth in 2012, as it appears to be partly due to a self-fulfilling prophecy.
A particularly controversial finding is that black Americans scored significantly lower than white Americans on standard intelligence tests— originally the gap was 15 points but this had narrowed to half that by the late 1980s. Indeed, most ethnic groups score lower than white middle-class groups on IQ tests. This finding has been interpreted by some as ‘evidence’ of the intellectual superiority of some races over others, but other observations, such as the finding that German babies fathered by black and white American soldiers have similar IQs, suggest that the difference in IQ scores is unlikely to be due to genetic inferiority/superiority. Similar differences in IQ scores are also found in relation to a child’s parental income. It is much more likely that such differences between races and social classes reflect a deficit in standard IQ tests—they are biased in favour of the dominant (often white middle-class) culture.
There is also evidence showing that the amount of parental attention a child receives affects its IQ—this may explain why first-born children have slightly higher IQs than their siblings, because the first child usually gets more attention.
There has also been much interest in whether IQ predicts behaviour. While there is a relationship between IQ and aspects of intelligent behaviour such as job performance, it is not a strong relationship and within most occupations there is a wide range of IQs. In fact, some studies suggest that socio-economic background is a better predictor of future academic and occupational success than IQ.
The researchers concluded that contact alone is insufficient to eliminate prejudice—it needed to be accompanied by the presence of superordinate goals that promote united, cooperative action.