Ryan Avent does not share the skepticism of the value of a four year college degree that was expressed by experts in a recent New York Times article, and by many commenters on that article, including myself. While I think he offers a useful overall counterpoint to the skeptics that is worth reading, he does have a couple of points that I want to disagree with.
First, is his point that
…wage premiums indicate that markets are certainly interested in having a larger pool of university graduates from which to hire, and increasing that pool by shrinking the pool of non-graduates would help meet that need while also striking a blow against income inequality.
Ryan may be drawing on wider empirics here to support this, but I don’t think this particular data point by itself is very valuable. One reason is because the wage premium of college graduates is reflective of two things: innate ability, and the returns to a college education. Thus the gap by itself does not distinguish between the demand for innate ability and the demand returns to education. Also, it is the marginal wage premium, and not the average, that is of interest here. The average (meaning the wage premium for the average college graduates) may be positive while the marginal (meaning the college wage premium for the student who is on the fence between attending and not attending) is zero or at the very least much much lower.
In addition, we would observe the wage gap growing over time if every year colleges lowered their bars to let in the highest ability of the non-college cohort, thus lowering the average overall ability of the non-college cohort relative to the college cohort. A growing wage gap driven by this phenomenon tells you nothing about the desirability of college. Given the growth of University of Phoenix and it’s ilk, this story has some appeal to it.
Another point he makes is responding to the fact that 15% of postal workers have a college degree:
Of course, the Postal Service cut tens of thousands of jobs during the recession, and given changes in information technology, it’s unlikely that many of those jobs will be coming back. Who do you suppose is feeling better about job prospects now: the 85% of mail carriers without college degrees or the 15% with them? In a volatile labour market, the flexibility of a credential is of crucial importance.
I am a little surprised to read this from Ryan, who has argued very persuasively against homeownership on the grounds that it is a large, leveraged, illiquid, and speculative investment. For what is a college education but a large, leveraged, illiquid, and speculative investment? Banks can’t foreclose on a college education, but I would guess that given the option, many college graduates, both employed and unemployed, wish that they could erase their student loans in exchange for a hit on their credit score and having their diploma torn up and being legally prevented from claiming any college attendance.
Also, the question here is not just whether a newly laid off, or at risk of being laid off, worker with a college degree would be better off without that degree, but whether they would be better off with the money they spent on that degree. I think many people would be better off with the safety net and flexibility provided by a large savings account or other liquid investments than with a degree that they weren’t even using before they got fired and that may be in a field that has either completely dried up or they no longer want to work in. I suspect there are many individuals right now who find themselves in such a position, including some of those postal workers.

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Tuesday ~ May 18th, 2010 at 11:33 am
Lord
Yes, one needs to distinguish between majors and between higher degrees but the severest problem is backward looking data when what is important is prospective data. As numbers increase one should expect falling returns and as real costs rise as well, these returns can only fall faster.
Tuesday ~ May 18th, 2010 at 1:29 pm
A degree of mobility - Economics -
[...] OZIMEK disagrees with my take on the value of college educations, and in particular that:…wage premiums indicate [...]
Tuesday ~ May 18th, 2010 at 2:33 pm
Agustin
This is a very interesting discussion. You are approaching the subject in a way that I have not, and it is showing me a very different way of thinking to my own. I appreciate that.
I have a few questions:
1. You state: “The average (meaning the wage premium for the average college graduates) may be positive while the marginal (meaning the college wage premium for the student who is on the fence between attending and not attending) is zero or at the very least much much lower.” What makes you say that?
2. I don’t understand the basis for this: “In addition, we would observe the wage gap growing over time if every year colleges lowered their bars to let in the highest ability of the non-college cohort…” Can you expand?
3. With respect to the point about laid-off postal workers, I agree that each one should (or should have earlier) considered what would put him in a better position: having a university degree, or having the tuition money in his pocket. My own answer would be that he is in a better position if he has *some kind* of post-secondary education. For some people, this means university; for others, trade schools. Either way, I think that the critical thinking skills and the general broadening of one’s horizons that happens in post-secondary education is well worth the money *.
(*) However, I think I may be thinking of a smaller cost than you. In the early 2000s I paid $5000/year in tuition for an engineering degree. I believe costs in the US may be much higher. Perhaps the answer is to make education more accessible to the population in general.
Tuesday ~ May 18th, 2010 at 3:28 pm
RickRussellTX
“I paid $5000/year in tuition for an engineering degree.”
That’s not far off; you could get a degree from a public school for about that much.
But you have to consider opportunity cost as well; the “cost” of the degree is the outright tuition and the lost opportunity to earn wages, etc.
With that said, I have to wonder what kind of college degrees we are talking about. Because when I search for jobs on Dice or Monster, a very large number screen out those without a degree. While I agree that college degrees may not be a good idea for an aspiring postal carrier, the degree is essential for many good-paying jobs.
Tuesday ~ May 18th, 2010 at 3:38 pm
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[...] OZIMEK disagrees with my take on the value of college educations, and in particular that: …wage premiums indicate [...]
Tuesday ~ May 18th, 2010 at 5:20 pm
Apex
@Agustin,
I will attempt to answer 1 & 2 for the author (he can correct me if I am wrong).
#1. If you take all college graduates and compare their wages to what they would earn if they didn’t go to college it may very well be positive or even highly positive. For example, a highly intelligent person who becomes a doctor and ears 500K per year would likely have a very hard time earning that money without his degree regardless of how intelligent he/she is. However if you take the people who are on the fence of going to college they are probably less likely to be doctor type material. They probably have marginal grades and even after a degree will likely have less lucrative job options available to them. It’s quite possible that their wage earning potential with the degree is no better than without it or only marginally better. That is the analysis the author is suggesting needs to be done to evaluate the value of pushing people into getting a college degree. The highly able person who plans to go to med school to be a doctor was going to go regardless, and for that person it clearly is a huge benefit. But for the marginal attender the question is does going make him/her better of and that is far less clear.
#2 This is also related to the marginal attender. If colleges require a GPA of 2.5 and lowered it to 2.3 then by definition they would take some of those with the highest intellectual ability in the non college pool and move them to the college pool. Presumably on average, those with higher ability will earn more so those people in the 2.3-2.5 GPA were likely to be some of the highest earning non college grad people. Simply moving them into the college grad pool will cause the non grad pools average earnings to drop. Presumably this would also cause the college grad average earnings to drop as well. But depending on how those earnings are distributed and how much the changes affect each group its quite possible, even likely, that removing some of the highest earners from the non college grad pool will hurt the average earnings there more than it hurts the average earnings of the college grad pool by adding what will be low earners relatively speaking, to that pool.
Tuesday ~ May 18th, 2010 at 6:17 pm
Agustin
Thank you, Apex. I understand now!
Tuesday ~ May 18th, 2010 at 7:52 pm
Adam Ozimek
Yep