Showing posts with label intelligence quotient. Show all posts
Showing posts with label intelligence quotient. Show all posts

Thursday, March 29, 2012

Misuse of IQ Tests

While Dr. Alfred Binet conducted his research, he stressed the limitations on IQ testing.  Dr. Binet believed that intelligence was not fixed, but malleable, able to change with environmental variables.  He also believed that testing needed to be created for and conducted on children from a similar background to get accurate results.  But even then, his tests only showed one aspect of intelligence, and did not represent a full view of a child's intelligence or abilities.

Unfortunately, not everyone listened to Dr. Binet.  Three groups in particular stand out in this regard:  the U.S. Army, Ellis Island officials, and the Eugenics Record Office.

At the onset of World War I, the U.S. Army faced the colossal task of placing scores of recruits in various positions.  In 1917, psychologist Robert Yerkes chaired the Committee on the Psychological Examination of Recruits, where he and fellow committee members created two different IQ tests for recruits:
  • Alpha test:  to test recruits who could read
  • Beta test:  to test recruits who could not read
By the end of WWI, over 2 million recruits had been tested, and either marked as cannon fodder or officer material.  Click here if you want to see a sample of the WWI IQ tests.

After WWI, the Alpha and Beta tests migrated from the army to Ellis Island, where incoming immigrants were tested.  Records show that whole swaths of people were denied entry based on IQ testing, without anyone taking into account the variations in social backgrounds between the immigrants and the test creators.  People erroneously developed stereotypes based on these tests, such as immigrants from Poland being "dumb", and an attempt was made in Congress to pass laws that weed out the feeble-minded from the rest of the immigrants.

But the worst misuse of IQ testing, in my opinion, was that by the Eugenics Record Office.

Founded in 1910, the Eugenics Record Office attempted to categorize people by genetic traits in order to "guide human evolution".  The founder, Charles Benedict Davenport, believed that "the general program of the eugenicist is clear - it is to improve the race by inducing young people to make a more reasonable selection of marriage mates; to fall in love intelligently. It also includes the control by the state of the propagation of the mentally incompetent."  In other words, Davenport believed in the forced sterilization of those who he determined were mentally incompetent.  And Davenport used IQ testing to "prove" his claims of feeble-mindedness.  Now, it is possible that Dr. Davenport did not understand how the IQ testing worked, that it did not measure intelligence per se.  But as a Harvard graduate and rather intelligent man himself, I believe he chose to overlook these problems when utilizing IQ tests to determine whether the government would remove a fundamental biological function from people he already deemed mentally incompetent.

In the end, over 65,000 people were forcefully sterilized from the early 1900s to 1981.

  

Monday, March 26, 2012

Children and Multiple Intelligences, Part 2

Before we proceed to comparing the theories of multiple intelligences to the standard IQ tests, I believe a little history lesson is in order.

The modern intelligent quotient (IQ) test began in the early 1900s.  France passed a law requiring school for all children during this time, but the French officials worried about how much money to put into the system.  Specifically, they worried about slow learners.  This is where Dr. Alfred Binet and his team enter the picture.  Dr. Binet agreed to help the French government.  To get around the problem of testing pre-literate children, Dr. Binet used three criteria for his tests:
  • Attention span
  • Problem Solving Skills
  • Memory
Soon, Dr. Binet and his team noticed that while the majority of children performed the tasks within one standard deviation, some children performed the tasks on par with children either significantly older or younger.  They created a formula to describe this phenomena:

Mental Age of Child
_______________
Real Age of Child

Note that this gives you the "quotient" part of IQ.

Dr. Binet multiplied the resultant number by 100 to get rid of the decimal.  So the first formula for IQ was

 Mental Age/Real Age x 100 = Intelligent Quotient

So if a child who is 10 years old performs as well as a 12 year old, her IQ is:

12/10 x 100 = 1.2 x 100 = 120

While a 10 year old child who performs as well as an eight year old child has an IQ of:

8/10 x 100 = .80 x 100 = 80

The scientific community latched onto Dr. Binet's work as ground-breaking in the arena of measuring intelligence, something that had not been done before.  But Dr. Binet stressed that his tests were limited in their scope, and that further research needed to be done.  Dr. Binet died before this research was completed, but several scientists took over, continuing his research and evolving the test to what we have today.

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