(CNN) --IQ scores have been steadily falling for the past few decades, and environmental factors are to blame, a new study says. The research suggests that genes aren't what's driving the decline in ...

(CNN) -- IQ scores have been steadily falling for the past few decades, and environmental factors are to blame, a new study says. The research suggests that genes aren't what's driving the decline in ...

There is something dismaying about the possibility that a single number, like an IQ score, could reveal anything significant about an individual’s character or potential. And maybe IQ scores don’t say ...

IQ tests aren't perfect, but they can be useful. If a boy doing badly in class does really well on one, it is worth investigating whether he is being bullied at school or having problems at home. The ...

The gap in IQ scores between whites and African-Americans has narrowed by at least a quarter since 1972, a pair of researchers contend in a new paper that attempts to skewer the argument that ...