Exercises: Field Autopsy — Education

Part A: Comprehension and Application

A.1. Explain the "meshing hypothesis" and summarize the evidence against it. Why did Pashler et al. (2008) conclude that the learning styles hypothesis lacks support? What evidential standard did they apply?

A.2. Identify five structural reasons why learning styles persists despite decades of debunking. For each, explain the mechanism of persistence and compare it to a failure mode from earlier chapters.

A.3. The chapter identifies four structural features that make education research harder than research in most other fields: randomization difficulty, measurement problems, implementation dependence, and time horizon mismatch. For each, explain the challenge and give a specific example.

A.4. Define "opinion density" and explain why education is uniquely vulnerable to it. How does opinion density interact with the authority cascade to produce distinctive failure dynamics in education?

A.5. Compare the evidence on class size reduction with what policymakers have actually implemented. What failure modes explain the gap between evidence and practice?

Part B: Analysis

B.1. Apply the Correction Speed Model to education. The chapter predicts very slow correction. Identify the single most important variable that could accelerate correction. What would it take to change that variable?

B.2. Compare learning styles (education) with bite mark analysis (criminal justice, Chapter 27) as zombie ideas. Both lack scientific validation and persist in professional practice. Analyze the structural similarities and differences. Why does bite mark analysis face more pressure to reform than learning styles?

B.3. The chapter argues that education's evidence-practice gap is caused by structural features, not by teacher ignorance. Design a structural intervention (not a training program) that would reduce the evidence-practice gap. What institutional infrastructure would need to exist? What resistance would you face?

B.4. EdTech spending has reached billions of dollars annually, with ambiguous evidence of benefit. Apply the capital-sustained error framework from Chapter 29: how does the EdTech market sustain investment in products without evidence? What would an evidence-based EdTech market look like?

Part C: Synthesis and Evaluation

C.1. The chapter's cross-field comparison table ranks education as having the lowest evidence quality, weakest correction mechanisms, and highest opinion density of any field examined. Evaluate whether this ranking is fair. Could a defender of education argue that the field is doing better than this assessment suggests? What evidence would they cite?

C.2. The chapter argues that education is "the field that studies learning and has learned the least about itself." Evaluate this claim. Is it too harsh? Consider: what has education research established with reasonable confidence? (Examples: spaced practice, retrieval practice, interleaving, feedback quality.) Why haven't these validated findings achieved wider adoption?

C.3. Part IV has examined eight fields. Rank them from most to least amenable to evidence-based correction. Justify your ranking using the Correction Speed Model variables. What does the ranking reveal about the structural conditions required for institutional learning?

Part D: Mixed Practice (Interleaved)

D.1. A school district is considering spending $5 million on a new educational technology platform. The vendor cites "research-based" results showing improved test scores in pilot programs. Using the failure mode framework from this book — specifically the plausible story problem (Ch.6), survivorship bias (Ch.5), incentive structures (Ch.11), precision without accuracy (Ch.12), and capital-sustained error (Ch.29) — design a due diligence process for evaluating this claim.

D.2. A teacher preparation program still teaches learning styles as part of its curriculum, despite requests from faculty members to remove it. Using the zombie idea framework (Ch.16), the consensus enforcement framework (Ch.14), and the sunk cost framework (Ch.9), explain why the program resists change. Design an intervention that addresses the structural barriers, not just the evidence.

D.3. You are asked to design a "field health assessment" for education using the Epistemic Health Checklist approach (previewed in Part V). Score education on: tolerance for dissent, replication culture, incentive alignment, measurement validity, outsider access, correction speed, history awareness, falsifiability of core claims, diversity of methods, and transparency of process. Identify the three lowest-scoring dimensions and propose one structural fix for each.