In a recent set of 3 articles 1, 2 and 3, in the Wall Street Journal, Charles Murray makes a series of provocative assertions and proposals concerning education in the United States. In short order, he argues:
1. By definition, 50% of the human race has below average intelligence.
2. Even the highest quality education cannot overcome basic
intellectual limitations in individual students
3. We need to simply accept these facts and restructure
education to embrace them by:
-Recognizing that a large minority of students will NEVER meet basic academic standards for reading, math and science in high school as they are now defined
-Recognizing that far too many American students go to 4-year-colleges despite the fact that they simply do not possess the basic intellectual capacity to benefit from that experience in any meaningful way
-Dramatically increasing the focus on high-paying, high quality vocational education both in high school and beyond
-Refocusing advanced education on moral values and responsible action for those of high intelligence who will both benefit from that education and develop a corresponding sense of responsibility to live their lives to a higher standard for the general good of humanity.
A bit of background on Murray is warranted. He has written extensively on the importance of IQ in determining social policy with his most famous work being The Bell Curve with his colleague Richard Herrnstein. Both the book and its authors have been lauded and vilified for trumpeting the importance of individual and group differences in intelligence in modern society.
That being said, I would like to focus Murray’s current argument concerning education. I think he accurately lays out several points, then radically misses others. I should mention at this point that my own training and background is in research psychology and I’ve both taught and thought on the subject of IQ a fair amount myself.
Point 1: By definition half of the human race has below average
intelligence.
This is Murray’s strongest and most obvious point. Because, like many other aspects of human behavior, intelligence in the population is distributed in the classic bell-shaped (normal) distribution, then just about half of us are above the mean and half are below. It is important to be clear here that Murray is explicitly NOT talking about scores on any given test, IQ or otherwise. He is making an accurate statement about the nature of human intelligence itself. Just as our changing understanding of gravity over time has had no impact on the fact of gravity’s existence and characteristics, our changing understanding and measurement of human intelligence has had no impact on the existence and characteristics of that phenomenon.
Point 2: Even the highest quality education cannot overcome basic
intellectual limitations in individual students.
This is also completely accurate. Individual intelligence sets intellectual limits beyond which a person cannot pass, just as limitations in athletics, musical ability, etc. set boundaries regardless of whatever environmental experiences (education/training) may be provided.
Point 3: Given limitations in intelligence, we need to simply accept the fact that some significant minority of US school children will never achieve even minimal proficiency in math, reading and science regardless of how well they are taught or what level of resources we throw at schools.
Again true. Despite rhetoric and federal mandates (like No Child Left Behind), some children simply can’t academically cut it and never will in ANY school.
Given these points, the fundamental question that arises is: how do we accurately determine who these individuals are? If we could do this, we could choose much more effectively how to expend our resources in education.
Here’s where Dr. Murray and I part company. He firmly believes that:
a) we have a solid screening mechanism in existing standard general IQ tests, and b) assuming we can measure it accurately, IQ is the primary criterion for success in school. I’m sure he’s wrong on the first count, and I’ve a strong hunch he’s wrong on the second.
Both of these problems center on what behavioral scientists often refer to as predictive validity. In short, if your test measures what you think it does, then a given score on that test should accurately predict how you would perform on the tasks/abilities the test measures. Think of a test for a pilot’s license. A higher score should indicate a better pilot. If you apply this logic to IQ tests, however, you run into a problem. We know what a good pilot is and what skills and abilities differentiate a poor pilot from a good one. We’re a whole lot less certain in answering these questions about intelligence. What exactly marks an intelligent person? What skills and abilities do these individuals possess that less intelligent individuals do not? We can make these distinctions at the extremes of intelligence pretty easily. Someone with an IQ score of 140 (”genius” level) thinks and behaves profoundly differently from a person with an IQ of 75 (mild mental retardation),and no amount of education is going to change this in any meaningful way. But we could likely figure this out just as well without IQ tests at all.
What Murray is talking about are comparatively more subtle distinctions on the order of 10 to 15 points on a standard IQ test. So, for example, he argues that in order to benefit from a typical college education, a person likely needs an IQ of about 110 (100 is average), and 115 would be better. In contrast, an elementary school child with an IQ of 95 may well be too stupid to ever pass the National Assessment of Educational Progress (NAEP) test for reading in 4th grade.
My point here is this: Right now, despite its legitimate importance to academic performance, behavioral scientists simply do not know enough about intelligence to design a test of intelligence that would support the level of fine-grained distinction that Murray is making.
The second problem concerns the general power of IQ to predict success in school. Here the picture is clearer: in short, IQ score is a very good predictor of success in western schools. A score on a standardized IQ test may, in fact, be the best single predictor of success in western schools.
The problem is that this isn’t the whole story. Even given it is the single best predictor, by itself IQ still isn’t that powerful. The statistical argument is a bit esoteric, but try it this way. If you add up all the different factors that could reasonably be expected to influence school performance (IQ, nutrition, illness, study habits, motivation, stability of home-life, quality of school, drug/alcohol use, etc.) and assume that all those factors together sum to 100% of the things that can influence school performance, IQ by itself accounts for about 25% of that theoretical 100%. That’s more than any other single factor that we can reasonably measure, but it’s still only 25%. That means 75% is left to all those other things we just mentioned. If we apply this to Murray’s argument, we can see that not only are the finer-grained distinctions he recommends difficult to make, even if we are successful, the majority of factors determining school success is still completely up in the air.
OK. On to Murray’s next point: dramatically increasing the focus on high-paying, high quality vocational education both in high school and beyond.
As far as his assertion that far too many American kids go to 4- years of college, I think he is absolutely right. Some sort of college degree has become the accepted entry ticket to the kind of stable, well-paying jobs that we want our kids to have. Except it’s not. As an example, a Master Electrician requires no college degree and makes about $50,000 a year in the US. Journeymen make about $40,000, and apprentices make about $30-35,000. Now ask yourself, how much that C+ average BS in business from some middle of the pack college is worth. If you’re still not convinced, open the phone book and try to find an electrician or plumber or carpenter who isn’t booked 2 or 3
weeks (or months) ahead. Murray recognizes this and rightly calls for greater emphasis on skilled trades education at the high school level and beyond. What bothers me is his assertion that we need to do this because much of our population is too stupid to benefit from college, and that skilled- trade work clearly requires a lower level of intellectual capacity than does college. He simply has no evidence for this assertion, and it strikes me as the intellectual elitism of which academics are constantly accused.
I also agree with Murray that as a result of the pressure to admit pretty much anyone with money (loaned or otherwise) to college, the intellectual experience of a college education is in danger of disintegrating entirely. I teach college for a living and based on my experience and that of my colleagues, a depressingly large number of students (and often even their parents) simply neither know nor care about the larger goals or values of higher education and see college as the 4- year hoop one must jump through to obtain a higher salary. Murray effectively argues that this belief is both increasingly incorrect and profoundly destructive to the intellectual climate on campus, but he insists on tying these problems predominantly to individual differences in intelligence and our cultural unwillingness to recognize them. Yes, there are some students on US college campuses who simply lack the basic intellectual skills to be there, but the assertion that this accounts for the majority of the apathetic, disinterested and poorly performing students is profoundly overstated and unsupported. Again, intelligence is simply the first among MANY variables that predict success in college.
One additional variable that certainly asserts a powerful impact on student performance is student motivation. Independent of their ability to comprehend college level material, a good chunk of the traditional 18-21-year-old student body would fundamentally rather be doing something else with their time. This desire may be a function of being overwhelmed by tasks some are ill-equipped to master, but it is likely also an issue of young-adulthood in U.S. society. Many traditional college students quite understandably have greater interest in material goods and social activities than issues of philosophy. One admittedly unsystematic measure of this is returning older students who are actively seeking the courses and knowledge they once dismissed as irrelevant to “real” life. A recent psychological research paper(discussed and referenced here) focusing on the importance of motivation and self discipline for academic sucess provides more rigorous evidence.
This brings us to Dr. Murray’s final suggestion concerning the education of that intellectual elite that we have now identified as capable of absorbing higher education. Again, his position is that these are the individuals who are going to end up running things,so as a society we must do all we can to ensure that they are well-educated to take up this responsibility.
My first problem is simply that I don’t believe we can identify that intellectual elite effectively. My second problem is that, even if correctly identified, there is no clear evidence that the intellectual elite either do now or will, in the future, be running things. This is the point that really bugs me. It’s hard not to see this as old-style class warfare. It sounds to my ear that Murray is saying that the great majority of us are simply too stupid to make good decisions for ourselves, and we should just stick to nice, solid trades like building houses and leave the real thinking to the few smart folks. This not just incorrect; it is profoundly dangerous and inflammatory.
Be smart. Be human.
Grant