Understanding IQ by aihaozhe2


									IQ or intelligent quotient is supposed to test intelligence irregardless of age or
environmental factors, yet numerous studies show that environmental factors can
strongly influence IQ. The concept of intelligence has continued to evolve, despite
problems with and misuses of IQ testing.

Some researches say that IQ, an income predictor, is partially inherited. IQ is not
influenced by family size or birth order. There is absolutely no evidence to suggest
that IQ is lower in large families. There is also no evidence to suggest that a first born
child will be more intelligent than any other child. Social class is just one of many
factors, both environmental and genetic that might impact a child's IQ. Others can
include: diet, birth weight, parental IQ . IQ tests can't measure all forms of

Studies have shown that children who are breast fed display IQ's up to 10 points
higher by the age of three. The right side of your brain controls the left side of your
body, and the left side of the brain controls the right side of the body. Brain weight
accounts for about 2 percent of your body weight, but your brain uses 20 percent of
your body's oxygen supply and 20-30 percent of your body's energy.

People with lower IQ are at a greater risk of getting a concussion. A Danish study
looked at 520 men who had sustained concussions after having their IQ's test . 30.4
percent of the concussed men had had low scores, resulting in experts declaring that
lower IQ is a risk factor.

In the 1960s and '70s, IQ tests began to fall out of favor, partially because of racially
and culturally specific test questions. Assumptions were made that a lower IQ
indicated the need for more teaching, not an inability to learn. Education matters,
studies show that dropouts lose IQ points. Summer vacation means brain drain. Two
independent studies show an IQ decline over the summer, increasing with every
month of school out. Kids hit the hardest are the ones with the least amount of
academic orientation. Swedish researchers found a 1.8 point IQ loss for each year of
high school missed after dropping out.

An analysis of 1 million students in a New York school district showed that school
cafeteria food affected IQ scores to an astonishing degree. When preservatives,
coloring and artificial flavors were removed from the cafeteria menu researchers
found that 70,000 students performed two or more IQ grade levels higher than before.

It is widely agreed that standardized tests can't measure all forms for intelligence
including creativity, wisdom, practical sense and social sensitivity. Researchers
compared the incomes of fathers and sons and found if you were in the bottom five
percent of society you had a one in 20 chance or less of getting to the top. Another
problem was that it was difficult to convert to IQ scores from other achievement and
ability tests.

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