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'Info-mania' dents IQ more than marijuana

Far from boosting productivity, a constant flow of email and phone messages impairs an office worker's ability to focus, a study suggests

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Music studies instrumental in raising children's IQ

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'Safe' lead levels still damage children's IQ

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Britain faces TV test of IQ

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Passive smoking dents children's IQ

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Marijuana does not dent IQ permanently

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Rejection massively reduces IQ

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Editorial : Dumb and dumber - Does it really matter if IQ scores go up or down?

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IQ is inherited, suggests twin study

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Normal, but light, babies develop lower IQs

Babies born at the lighter end of the normal weight range still go on to develop lower IQs, say US researchers

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Editorial : Don't panic, just pay - How much are a couple of IQ points worth to you?

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High lead levels may permanently lower IQ

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