Ep64 "Why Higher Education Needs a Massive Overhaul" with Bryan Caplan

All Else Equal Podcast: The Value of Education

Key Concepts:

• Human Capital: Skills and knowledge acquired through education that increase an individual's productivity and value to society.
• Signaling: Using education as a costly signal to employers about one's inherent abilities, conscientiousness, and resilience, especially when there's an asymmetry of information.
• Selection Effect: The idea that individuals who attend top institutions are already high-achievers, and their success is due to pre-existing abilities rather than the education itself.
• Sheepskin Effect: The significant increase in earnings upon graduation compared to being just one semester away, suggesting that the degree itself (the "sheepskin") holds substantial value beyond the skills acquired.
• Intellectual Laziness: A tendency to accept information without critical evaluation or independent thought.
• Fake Vocational Degrees: Degrees that appear to prepare students for specific jobs but lead to an oversupply of graduates relative to available positions.
• Credential Inflation: The increasing requirement of formal education for jobs, even if the skills learned are not directly applicable or necessary.

Three Potential Effects of Education

Jules van Binsbergen outlines three potential ways education impacts job market outcomes:

1. Human Capital: Education develops skills that make individuals more valuable to society.
2. Selection Effect: Top institutions attract the best people, whose success is due to their inherent abilities.
3. Signaling: Education signals desirable traits like resilience and conscientiousness to employers.

The Signaling Model Explained

Jonathan Berk emphasizes the asymmetry of information between job seekers and employers. Signaling involves costly actions (like completing a degree) that demonstrate an individual's abilities and commitment. The core idea is that a significant portion of the returns to education, reflected in higher salaries, stems from signaling rather than actual skill acquisition. Employers value the commitment and staying power demonstrated by graduates, especially from top universities.

Contrasting Human Capital and Signaling

Berk contrasts the human capital model with the signaling and ability models. In the human capital model, education benefits both the individual and society by developing valuable skills. In the signaling and ability models, individuals benefit through higher pay, but there's no inherent benefit to society. Subsidizing education is only justified if the human capital story is accurate. If signaling dominates, subsidies become a wasteful arms race, requiring individuals to exert more effort to differentiate themselves.

Questioning the Value of University Education

Van Binsbergen notes the increasing skepticism about the value of a college education. Berk adds that the evidence presented in Bryan Caplan's book, "The Case Against Education," shook him to the core. A key observation is that people often don't use the specific skills learned in university on the job.

Arguments Against Caplan's Thesis

Van Binsbergen pushes back against Caplan's thesis, arguing that it's difficult to definitively prove without a counterfactual: a society without a college education system. He points to the US's economic success, innovation, and productivity growth, suggesting that universities may play a crucial role.

Evidence Supporting the Signaling Model

Berk counters that Caplan's book amasses data suggesting a waste of effort in the current education system. He highlights the "sheepskin effect" as strong evidence for signaling. The fact that someone one semester away from graduating doesn't earn nearly as much as a graduate suggests the degree itself is the primary value driver, not the accumulated skills.

Counterarguments to the Sheepskin Effect

Van Binsbergen offers two counterarguments:

1. Failing to graduate may signal negative traits that justify a lower salary.
2. Even if specific knowledge isn't directly used, the thought processes and debates during education may create valuable synaptic connections and improve thinking skills.

Psychological Evidence and Knowledge Transfer

Berk cites psychological evidence suggesting that knowledge transfer from academic settings to real-world situations is limited. Studies show that individuals often fail to recognize and apply learned concepts in different contexts.

Education and Democratic Citizenship

Van Binsbergen argues that education is crucial for creating informed and engaged citizens who can critically process information, especially in an era of AI and diverse information sources. Even if economic benefits are questionable, education may still be valuable for a well-functioning democratic society.

Bryan Caplan's Perspective

Caplan argues that the curriculum focuses on subjects with little practical application in most jobs (e.g., foreign languages, history, poetry). He dismisses the idea that these subjects teach general skills like "learning how to learn" or "thinking," citing psychological research.

The Role of Liberal Arts Education

Caplan suggests that liberal arts education works well for individuals with pre-determined career paths or a genuine passion for intellectual pursuits. However, he argues that most liberal arts degrees are pursued by students without clear career goals, hoping to "make their way in the world," where these degrees often fall short. He criticizes "fake vocational degrees" like communications and psychology, where the number of graduates far exceeds available jobs.

The Importance of On-the-Job Training

Caplan believes that if someone stopped education at 15 and entered a banking apprenticeship, they could be just as successful, if not more so, in the same amount of time. He argues that most skills are learned "by doing" on the job, and education serves as a "passport to the real training." He points to the UK's medical school system, where students go directly from high school to medical school, as an example.

The Shift Away from Guild Systems

Van Binsbergen questions why societies moved away from guild systems, which emphasized on-the-job training. Caplan suggests that guilds were limited to specialized trades and that most people were farmers who learned by doing. He proposes that wealthier economies could afford to take children out of the labor force and put them in school, leading to a "cargo cult" mentality where other countries imitated this model.

The Need for Specialized Knowledge

Berk points out that some professions, like engineering, require specialized knowledge (e.g., solving differential equations) that takes years to acquire. Caplan acknowledges that some fields require technical knowledge and repetition. However, he argues that even in vocational fields, there's a significant amount of waste. He cites his father's experience as an engineer, where much of what he learned in school was not used on the job.

The Case of Law School

Caplan criticizes law schools for teaching outdated laws and not adequately preparing students for the bar exam. He argues that law schools primarily focus on signaling, making students "jump through a lot of hoops" to demonstrate their employability.

Self-Teaching and the Limits of Formal Education

Caplan argues that to be a successful research professor, one must learn far more through self-teaching than what is taught in school. This self-teaching differentiates a true researcher from someone who simply completes coursework.

Comparing Bankers Across Time

Caplan suggests comparing bankers today with those in 1945. Bankers in 1945 had fewer formal credentials, but it's unclear whether they were less effective at making successful loans. He argues that "credential inflation" has occurred throughout the economy without a clear improvement in job performance.

The Effectiveness of Teaching Critical Thinking

Van Binsbergen argues that education can combat intellectual laziness by training students to critically evaluate statements. He describes creating a debating culture in his classroom to incentivize critical thinking.

The Rarity of Effective Critical Thinking Training

Caplan counters that effective critical thinking training is rare, and the widespread financial benefits of education can't be attributed to it. He cites experiments showing that students often fail to apply learned concepts outside the classroom when not explicitly prompted. He also raises the issue of retention, questioning whether students maintain critical thinking skills years later.

Selection vs. Improvement During Education

Caplan discusses experiments showing that critical thinking skills improve at each level of education (high school, college, grad school), but there's little improvement within each program. This suggests that selection (better thinkers advance) is more important than the educational program itself.

Conclusion

Caplan summarizes his argument by stating that education significantly boosts career prospects and income, but it doesn't seem to teach much in the way of practical skills or critical thinking.