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sábado, 1 de março de 2014
People with high IQs really DO see the world differently: Researchers find they process sensory information differently
discovered that the brains of people with high IQ are automatically more
selective when it comes to perceiving moving objects, meaning that they are
more likely to suppress larger and less relevant background motion.
found that a high IQ brain was better able to block out larger or more
irrelevant images when focussing on a small moving object.
surprisingly, when tested with larger objects, people with a high IQ were
slower to see what was right in front of them
with high IQ scores aren't just more intelligent - they also process sensory
information differently, according to new study.
‘It is not that people with high IQ are simply
better at visual perception,’ said Duje Tadin of the University of Rochester.
‘Instead, their visual perception is more discriminating.'
excel at seeing small, moving objects but struggle in perceiving large,
discovery was made by asking people to watch videos showing moving bars on a
task was to state whether the bars were moving to the left or to the right.
ability to block out distraction helps to explain what makes some brains more
efficient than others
researchers measured how long the video had to run before the individual could
correctly perceive the motion.
results show that individuals with high IQ can pick up on the movement of small
objects faster than low-IQ individuals can.
wasn't unexpected, Tadin says.
surprise came when tests with larger objects showed just the opposite:
individuals with high IQ were slower to see what was right there in front of
is something about the brains of high-IQ individuals that prevents them from
quickly seeing large, background-like motions,’ Tadin added.
other words, it isn't a conscious strategy but rather something automatic and
fundamentally different about the way these people's brains work.
ability to block out distraction is very useful in a world filled with more
information than we can possibly take in.
helps to explain what makes some brains more efficient than others. An
efficient brain 'has to be picky' Tadin said.
findings were reported in the Cell Press journal Current Biology.
AN IQ AND WHAT DOES IT MEAN?
intelligence quotient or IQ is a score derived from a set of standardised tests
developed to measure a person's cognitive abilities or ‘intelligence’ in
relation to their age group.
tests do not measure intelligence the way a ruler measures height , but rather
the way a race measures speed.
IQ tests produce scores for different areas - such as language fluency
and three-dimensional thinking - with the overall score calculated from subtest
average score, according to the bell curve, is 100.
have linked IQ scores to morbidity and mortality and even social status.
average IQ scores for many populations have been rising at an average rate of
three points per decade since the early 20th century, a phenomenon called the
disputed whether these changes in scores reflect real changes in intellectual