I must be one of those negative types.
I believe the human race is becoming progressively dumber.
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3) IQ tests show that the average teenager is smarter with each generation. The tests are constantly adjusted to keep average at 100, and a teenager who now would score a 100 would have scored a 118 in 1950 and a 130 in 1910.
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I believe this is explained by the Flynn effect.
http://en.wikipedia.org/wiki/Flynn_effect
A contradictory piece of evidence is given by the declining entry standards for officer training in US military academys since the early 20th century.
It seems the aptitude tests given to determine if a certain percentage of the population were potential officer material during WWI is now only passed by a significantly smaller percentage of the population.
Perhaps this is also a reflection in our declining numeracy and literacy skills.
Maybe it's not the education system that is at fault......
Regards
Steven