BevK January 18th, 2007
In a series of three articles at OpinionJournal.com, Charles Murray explores the following:
- Half of all children are below average, and teachers can do only so much for them.
-
Too many Americans are going to college.
- Our future depends crucially on how we educate the next generation of people gifted with unusually high intelligence.
Intelligence in the Classroom
Education is becoming the preferred method for diagnosing and attacking a wide range problems in American life. The No Child Left Behind Act is one prominent example. Another is the recent volley of articles that blame rising income inequality on the increasing economic premium for advanced education. Crime, drugs, extramarital births, unemployment–you name the problem, and I will show you a stack of claims that education is to blame, or at least implicated.
One word is missing from these discussions: intelligence. Hardly anyone will admit it, but education’s role in causing or solving any problem cannot be evaluated without considering the underlying intellectual ability of the people being educated. Today and over the next two days, I will put the case for three simple truths about the mediating role of intelligence that should bear on the way we think about education and the nation’s future.
Today’s simple truth: Half of all children are below average in intelligence. We do not live in Lake Wobegon.
What’s Wrong With Vocational School?
In engineering and most of the natural sciences, the demarcation between high-school material and college-level material is brutally obvious. If you cannot handle the math, you cannot pass the courses. In the humanities and social sciences, the demarcation is fuzzier. It is possible for someone with an IQ of 100 to sit in the lectures of Economics 1, read the textbook, and write answers in an examination book. But students who cannot follow complex arguments accurately are not really learning economics. They are taking away a mishmash of half-understood information and outright misunderstandings that probably leave them under the illusion that they know something they do not. (A depressing research literature documents one’s inability to recognize one’s own incompetence.) Traditionally and properly understood, a four-year college education teaches advanced analytic skills and information at a level that exceeds the intellectual capacity of most people.
Aztecs vs. Greeks
If “intellectually gifted” is defined to mean people who can become theoretical physicists, then we’re talking about no more than a few people per thousand and perhaps many fewer. They are cognitive curiosities, too rare to have that much impact on the functioning of society from day to day. But if “intellectually gifted” is defined to mean people who can stand out in almost any profession short of theoretical physics, then research about IQ and job performance indicates that an IQ of at least 120 is usually needed. That number demarcates the top 10% of the IQ distribution, or about 15 million people in today’s labor force–a lot of people.
In professions screened for IQ by educational requirements–medicine, engineering, law, the sciences and academia–the great majority of people must, by the nature of the selection process, have IQs over 120. Evidence about who enters occupations where the screening is not directly linked to IQ indicates that people with IQs of 120 or higher also occupy large proportions of positions in the upper reaches of corporate America and the senior ranks of government. People in the top 10% of intelligence produce most of the books and newspaper articles we read and the television programs and movies we watch. They are the people in the laboratories and at workstations who invent our new pharmaceuticals, computer chips, software and every other form of advanced technology.
Combine these groups, and the top 10% of the intelligence distribution has a huge influence on whether our economy is vital or stagnant, our culture healthy or sick, our institutions secure or endangered.
