December 22, 2012

Study finds IQ to be a mythical gauge of intelligence

Star, Canada - The idea that intelligence can be measured by a single number — your IQ — is wrong, according to a recent study led by researchers at the University of Western Ontario.

The study, published in the journal Neuron on Wednesday, involved 100,000 participants around the world taking 12 cognitive tests, with a smaller sample of the group undergoing simultaneous brain-scan testing.

“When we looked at the data, the bottom line is the whole concept of IQ — or of you having a higher IQ than me — is a myth,” said Dr. Adrian Owen, the study’s senior investigator and the Canada Excellence Research Chair in Cognitive Neuroscience and Imaging at the university’s Brain and Mind Institute. “There is no such thing as a single measure of IQ or a measure of general intelligence.”
Rather, the study determined three factors — reasoning, short-term memory and verbal ability — that combined to create human intelligence or “cognitive profile.”

... Among the study’s other findings:

   While aging has a detrimental effect on reasoning and short-term memory, it leaves verbal abilities “completely unimpaired.”

  Smoking has a negative impact on verbal abilities and short-term memory but does not affect reasoning skills.

  People who play video games performed “significantly better” in terms of both reasoning and short-term memory.

  Products that are advertised to improve brain function aren’t effective.
“People who ‘brain-train’ are no better at any of these three aspects of intelligence than people who don’t,” Owen said.

1 comment:

Anonymous said...

Ah, another publication in aid of not perishing.

It's been known for at least 60 years that whatever IQ tests measure, it's not "G(eneral intelligence)", the very existence of which is still hotly disputed.