Technology may be getting smarter, but humans are getting dumber, scientists have warned.
Evidence suggests that the IQs of people in the UK, Denmark and Australia have declined in the last decade.
Opinion is divided as to whether the trend is long-term, but some researchers believe that humans have already reached intellectual peak.
An IQ test used to determine whether Danish men are fit to serve in the military has revealed scores have fallen by 1.5 points since 1998.
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