Incentives Matter

The Pass-Through Illusion: Why Voters Demand Bad Climate Policy

April 20, 202618:19Incentives Matter

This episode explores why efficient market-based climate policies, such as carbon taxes, are frequently rejected by the public in favor of less efficient command-and-control standards. It delves into a new NBER working paper that attributes this rejection to voters' fundamental misunderstanding of how costs are passed through the economy, leading to a "pass-through illusion." Listeners will learn about this behavioral blind spot and how it causes the public to incorrectly believe rigid standards will impact their bills less than market-based instruments.

Key Takeaways

Detailed Report

Economists overwhelmingly agree that market-based tools like carbon taxes and cap-and-trade systems are the most efficient ways to combat climate change. Despite this consensus, these policies are routinely rejected by voters and legislatures in favor of more rigid, often more expensive, "command-and-control" environmental standards.

The "Pass-Through Illusion"

A new NBER working paper, "Understanding Support for Inefficient Environmental Policy Instruments," reveals that voters are not rejecting market-based tools because they are anti-environment. Instead, they fundamentally misunderstand how costs are passed through the economy. This phenomenon is termed the "pass-through illusion," a behavioral blind spot where the public fails to grasp basic tax incidence and cost distribution.

Voters mistakenly believe that rigid environmental standards will have *less* impact on their electricity bills than a carbon tax, which is the precise opposite of economic reality. They perceive direct consumer taxes as a personal financial hit, while viewing corporate mandates or producer taxes as costs absorbed by businesses that won't affect them.

Key Findings from the NBER Study

Researchers Chenxi Jiang, Maximiliano Lauletta, Ro'ee Levy, Joseph S. Shapiro, and Dmitry Taubinsky conducted a nationally representative survey experiment. They held the environmental impact (emissions reduction) constant across various policy scenarios, including consumer taxes, producer taxes, cap-and-trade, and command-and-control standards. The only variable was the policy mechanism.

The findings were stark: respondents overwhelmingly preferred rigid standards, even with identical environmental benefits. When forced to choose market-based tools, they leaned towards producer taxes or cap-and-trade over direct consumer taxes. A parallel survey of professional environmental economists confirmed their correct understanding that standards are inefficient and increase consumer bills more than market-based instruments, directly contrasting the public's perception.

Behavioral Economics at Play

This disconnect is explained by established behavioral economics concepts:

  • Tax Salience: People don't fully optimize their behavior around taxes if those taxes aren't highly visible. A direct consumer carbon tax is highly salient, appearing as a clear line item on a utility bill.
  • Loss Aversion: The visible, direct hit of a consumer tax triggers immediate loss aversion, making people hate losing what they perceive as their money, even if alternative hidden costs are larger.
  • Hypersalience: The prominence of a visible tax can lead taxpayers to vastly *overestimate* its economic burden compared to less visible alternatives. Conversely, the hidden costs of producer taxes or regulatory standards are often ignored.

The Stringency Paradox

The study also uncovered a severe paradox: voters calibrate their environmental demands based on the policy instrument. When a policy was framed as a consumer tax, respondents preferred the *weakest* environmental targets, wanting to minimize the visible financial pain. However, when the exact same environmental goals were framed as "standards," respondents demanded the *strongest* possible targets, assuming the costs were "free" to them.

This creates a significant challenge for policymakers: to pass ambitious climate action, they are often politically compelled to use more expensive, inefficient command-and-control standards, as voters will only tolerate weak versions of transparent, efficient policies.

Can Education Bridge the Gap?

The researchers tested an intervention to address this economic illiteracy. Participants watched short educational videos: one explaining economic incidence and cost pass-through (the "Pass-Through Video"), and another explaining cost-effectiveness (the "Allocative Efficiency Video").

These videos surprisingly shifted preferences, moving respondents' policy support closer to expert consensus. This suggests that the preference for inefficient standards is not an immovable ideological stance but a correctable deficit in economic literacy, at least in a controlled environment.

However, a critical perspective warns against "nudge-washing" – overhyping small interventions as universal cures. In the real world, educational campaigns compete with highly emotive, partisan messaging, making it uncertain if lab-induced rational mindsets can survive the political fray.

Implications for Policymakers

The NBER paper offers clear lessons for policymakers: instead of trying to educate voters out of their biases, they should become better "choice architects."

  • Embrace Lower-Salience Mechanisms: If voters prefer policies where costs are hidden, policymakers might consider using producer taxes or cap-and-trade systems, even if they are slightly less efficient than textbook-perfect transparent consumer taxes.
  • Pair Salient Taxes with Salient Rewards: If a visible tax is necessary, it should be paired with an equally visible, tangible reward. "Carbon Fee and Dividend" models, where tax revenue is returned directly to citizens, can offset the hypersalience of the tax with the hypersalience of the benefit.

Ultimately, the paper diagnoses a political disease rooted in the "pass-through illusion." It suggests that practitioners and politicians should acknowledge human behavioral biases and design climate policies that can actually survive the messy, biased reality of the human brain, rather than fighting against it.

Show Notes

Works Referenced

  • Understanding Support for Inefficient Environmental Policy Instruments: This NBER working paper by Jiang, Lauletta, Levy, Shapiro, and Taubinsky reveals that voters often reject efficient market-based climate policies like carbon taxes due to a 'pass-through illusion,' fundamentally misunderstanding how costs are distributed through the economy, leading them to prefer more expensive command-and-control regulations.
  • Salience and Taxation: Theory and Evidence: Pioneering research by Chetty, Looney, and Kroft demonstrating how the visibility of taxes (tax salience) significantly influences consumer behavior and purchasing decisions, even when the economic burden remains the same.
  • Carbon Fee and Dividend: A policy proposal that combines a carbon tax (fee) on fossil fuels with a direct return of the collected revenue to households (dividend), designed to make carbon pricing more politically palatable by offsetting the visible cost with a visible benefit.

Glossary

  • Bounded Rationality: The idea that human decision-making is limited by available information, cognitive abilities, and time, leading to choices that are 'good enough' rather than perfectly optimal.
  • Cap-and-Trade: A market-based system that sets an overall limit (cap) on emissions and allows companies to buy and sell (trade) emission allowances, creating a financial incentive to reduce pollution.
  • Carbon Tax: A fee imposed on greenhouse gas emissions, typically on the carbon content of fossil fuels, to incentivize reduced emissions.
  • Choice Architect: An individual or entity responsible for organizing the context in which people make decisions, influencing choices without restricting options.
  • Command-and-Control Standards: Environmental regulations that directly mandate specific technologies, pollution limits, or practices, rather than using market incentives.
  • Loss Aversion: A cognitive bias where the psychological pain of losing something is felt more intensely than the pleasure of gaining an equivalent amount.
  • Nudge-washing: The overpromotion or misrepresentation of small behavioral interventions ('nudges') as comprehensive solutions for complex, systemic problems.
  • Pass-Through Illusion: A cognitive bias where individuals fail to understand how costs from taxes or regulations imposed on businesses are ultimately passed on to consumers through higher prices.
  • Pigovian Taxes: Taxes levied on activities that generate negative externalities (like pollution) to internalize the external cost and encourage more socially optimal behavior.
  • Tax Incidence: The economic burden of a tax, indicating who ultimately pays it (e.g., consumers, producers, or workers), regardless of who is legally required to remit the tax to the government.
  • Tax Salience: The degree to which a tax is visible or noticeable to individuals, influencing their awareness of the tax and its impact on their economic decisions.

Full Transcript

HostSo, imagine this: economists, nearly every single one of them, agree that carbon taxes and cap-and-trade systems are the absolute cheapest, most efficient ways to fight climate change. They are the gold standard.
ExpertThe discussion revolves around Pigovian taxes, which involve putting a price on pollution and letting markets do their thing.
HostExactly. Yet, when these policies are put before voters or legislatures, they are routinely rejected. Instead, what do we get? Rigid, often much more expensive "command-and-control" environmental standards.
ExpertAnd the kicker? A new NBER working paper reveals that voters aren't rejecting market-based tools because they're anti-environment. They're rejecting them because they fundamentally misunderstand how costs are passed through the economy.
HostThey actually believe that those rigid, expensive standards will have *less* impact on their electricity bills than a carbon tax. Which, as any economist will tell you, is the precise opposite of reality.
ExpertIt's an inversion of economic logic, driven by a profound behavioral blind spot.
HostThat disconnect is truly staggering. For decades, there has been a frustrating loop where environmental economists wave their hands, pointing to the optimal solutions, and then the public and politicians choose something else entirely. The NBER working paper, "Understanding Support for Inefficient Environmental Policy Instruments," published just this past April, really drills down into *why* this happens.
ExpertThe authors, Chenxi Jiang, Maximiliano Lauletta, Ro'ee Levy, Joseph S. Shapiro, and Dmitry Taubinsky, from UC Berkeley and other institutions, took a really elegant approach. They designed a nationally representative survey experiment. The key was holding the *environmental impact* – the amount of emissions reduction – strictly constant across different policy scenarios.
HostSo, whether they were looking at a consumer tax, a producer tax, a cap-and-trade system, or those command-and-control standards, the *outcome* for the planet was presented as identical. The only thing changing was the mechanism.
ExpertPrecisely. And the findings were stark: even with identical environmental benefits, respondents overwhelmingly preferred those rigid standards. And if they *had* to choose a market-based tool, they still leaned towards producer taxes or cap-and-trade over direct consumer taxes.
HostIt's like asking someone if they'd rather take a five-dollar bill directly from their wallet or have a five-dollar charge added to some nebulous future bill, and they consistently pick the latter, even if it ends up costing them more. But the most damning finding, the one that really highlights this chasm between expert knowledge and public perception, came from a parallel survey.
ExpertYes, they surveyed a panel of professional environmental economists. And the results, when compared to the general public, create a truly depressing comedy of errors. The economists, as expected, correctly identified that environmental standards are highly inefficient and, therefore, increase consumer energy bills *more* than market-based instruments.
HostAnd the voters?
ExpertThe typical survey respondents believed the exact opposite. They confidently stated that environmental standards increase their energy bills *less* than market-based instruments. It's not just a slight disagreement; it's a complete flip.
HostThat's the crux of it, isn't it? Voters aren't rejecting carbon taxes because they're suddenly against a cleaner environment. They're rejecting them because their mental model of how costs ripple through the economy is fundamentally flawed. They perceive one type of policy as a direct hit to their wallet, and the other as a corporate problem that won't touch them.
ExpertThat "flawed mental model" is where the behavioral economics comes in. The paper calls it the "pass-through illusion." It's a failure to understand basic tax incidence and cost pass-through.
HostExplain "tax incidence" for listeners who might not have an economics degree.
ExpertIn simple terms, tax incidence is about who *actually* bears the burden of a tax, regardless of who is legally responsible for paying it to the government. The "Liability Side Equivalence Principle" in economics states that it doesn't matter if you tax the producer or the consumer; the economic burden depends on how supply and demand respond. Think of it like this: if you tax a utility company, that company isn't just going to absorb the cost out of thin air. They'll pass it down the supply chain, ultimately to consumers, in the form of higher electricity rates.
HostSo, if a politician says they're going to "make corporations pay" for environmental cleanup, the average voter hears "I won't have to pay anything." But the reality is that the corporation will simply bake that cost into their prices.
ExpertExactly. And Jiang et al. show that the average voter does not track this. When a policy is framed as a "standard" or a "producer tax," the cost becomes effectively invisible to the end consumer. The voter *assumes* the mandate comes out of corporate profits. They suffer from this illusion that corporate mandates are "free" to the public.
HostIt's the ultimate stealth tax, but it's not even a tax; it's just a hidden cost. And the study found that the public vastly prefers taxing producers over taxing consumers. That sounds like it ties directly into a well-established behavioral economics concept.
ExpertIt does. It's a classic case of **Tax Salience**. This concept was really brought to prominence by Raj Chetty, Adam Looney, and Kory Kroft in their 2009 work on salience and taxation. They showed that people don't fully optimize their behavior around taxes if those taxes aren't highly visible.
HostListeners might recall the grocery store experiment.
ExpertYes, the famous one. Where they showed that posting tax-inclusive prices on shelves reduced demand by 8%. If taxes were only visible at the register, people often ignored them in their purchasing decisions. It's a powerful demonstration of how the visibility of a cost changes behavior.
HostSo, in the climate policy context, a direct consumer carbon tax is highly salient. It's a line item on your utility bill, a clear dollar amount that you can point to. That triggers immediate **loss aversion**. People hate losing what they perceive as their money, even if the alternative is a hidden, larger loss.
ExpertPrecisely. That direct hit is emotionally salient. A producer tax or a regulatory standard, on the other hand, hides that cost within the final price of the electricity. The brain simply fails to process that hidden cost, leading to this penalty for the transparent policy and, perversely, a reward for the more opaque one.
HostThe term "hypersalience" has been used for this.
ExpertYes, some legal and behavioral scholars use **Hypersalience** to describe when the prominence of a tax provision leads taxpayers to vastly *overestimate* its economic burden compared to less visible alternatives. So, a typical voter looks at a consumer carbon tax and experiences hypersalience, feeling a disproportionate sting, while looking at a complex regulatory mandate and experiencing zero price pain, even if the latter ultimately costs them more.
HostSo, this isn't just about preferring one type of policy over another; it's about how that preference then impacts the *ambition* of the environmental targets. This is where the paper gets even messier and, frankly, quite fascinating.
ExpertIt does. The researchers uncovered a severe paradox in how voters calibrate their environmental demands based on the policy instrument. And it's a direct consequence of this pass-through illusion.
HostWalk us through it.
ExpertThe NBER paper found that respondents preferred the *weakest* environmental targets when the policy was framed as a consumer tax. Because they felt the acute psychological pain of that salient tax, they wanted the policy to be as mild as possible. They basically expressed a sentiment along the lines of, "If one has to pay, let's not do too much."
HostBut then, when those exact same environmental goals were framed as "standards"...
ExpertThen, respondents suddenly demanded the *strongest* possible targets. Because their mental model told them standards were "free" to the consumer, they effectively maxed out their environmental ambitions. It's a stark stringency vs. efficiency tradeoff that the public seems unable to reconcile.
HostThis has huge implications for policymakers. If a lawmaker genuinely wants to pass aggressive, ambitious climate action, they're in a bind. If they propose a carbon tax, voters will only tolerate a weak, watered-down version of it because of that visible cost.
ExpertThat's right. The political reality means the lawmaker is practically forced by voter psychology to use the most expensive, inefficient policy tool available – those command-and-control standards – just to achieve meaningful environmental targets. It's a political expediency born from a cognitive bias.
HostIt's almost as if society is paying a massive "cognitive bias premium" on all environmental legislation. Because the public's bounded rationality prevents them from doing the math on cost pass-through, society as a whole ends up paying billions of dollars more to reduce emissions through inefficient standards rather than through efficient market mechanisms.
ExpertA very expensive illusion. It begs the question, is this just a failure of political messaging, or is it an unfixable quirk of human nature?
HostWell, the researchers actually tried to fix it, at least in the lab. They designed an intervention specifically to address this economic illiteracy.
ExpertThey did. Having identified that a lack of economic understanding was driving these policy preferences, Jiang, Taubinsky, and their co-authors tested a solution. They randomly assigned participants to watch one of two short educational videos, or be part of a control group that watched neither.
HostThe first video, the "Pass-Through Video," sounds like it directly tackled the core problem.
ExpertIt did. It explained the concepts of economic incidence and cost pass-through in non-technical language. Crucially, it used gasoline as an example to show how a commodity tax on a business is passed through to consumer prices, making the final price the same whether the tax is collected from the consumer or the business. It aimed to make the invisible visible.
HostAnd the second video?
ExpertThat was the "Allocative Efficiency Video." It explained the concept of cost-effectiveness, again, in non-technical language, directly comparing a tax on emissions with a rigid standard to show why the tax is cheaper for society. It was about understanding the *benefits* of efficiency.
HostSo, did these educational videos actually work? Did they shift preferences?
ExpertSurprisingly, yes. The data showed that these videos actually worked. Educating voters on how energy bills are calculated significantly shifted their policy support. After watching the videos, the respondents' preferences moved closer to the expert consensus, closing a significant portion of the gap between the general public and environmental economists.
HostThat's a huge finding. It suggests that the preference for inefficient standards isn't some immovable ideological stance, but a correctable deficit in economic literacy. The pass-through illusion can, at least in a controlled environment, be dispelled.
ExpertIn the lab, it absolutely can. But this is where a critical perspective is needed, and one must be wary of "nudge-washing."
HostAh, the term behavioral scientists use for overhyping small interventions as magical cures.
ExpertExactly. "Nudge-washing" is when small behavioral interventions are presented as a panacea for deep, systemic problems, often without rigorous real-world backing. The question becomes: does this rational mindset, induced by a three-minute video, survive outside the sterile environment of a survey?
HostBecause in the real world, a voter isn't just watching a neutral, non-technical video about gasoline taxes. They're bombarded by highly emotive, multi-million-dollar partisan attack ads. They're influenced by identity politics, motivated reasoning, social media echo chambers...
ExpertPrecisely. If a think tank runs an educational campaign on cost pass-through, will it actually change votes at the ballot box, or will it be drowned out by a politician screaming, "My opponent wants to tax your electricity, and it will raise your bills!"? The lab proves the *mechanism* of the bias, and that it's correctable, but relying on mass economic education as a primary political strategy seems like a fool's errand.
HostSo, what does this mean for the everyday listener? What's the takeaway when listeners are confronted with a new regulation or a politician making promises about who will pay?
ExpertIt means individuals are all susceptible to the "pass-through illusion." Every time a local ballot measure proposes a new regulation on businesses, or a politician promises to "make corporations pay" for environmental cleanup, voters naturally assume their own wallets are safe. Understanding human bounded rationality and cognitive blind spots is the first step to making better democratic choices.
HostAnd for policymakers, this paper offers a pretty clear lesson, doesn't it? Instead of complaining that voters are economically illiterate, climate advocates and policymakers need to become better choice architects.
ExpertAbsolutely. The NBER paper strongly implies that transparency in pricing, while economically beautiful and favored by purists, is politically fatal. If behavioral economics indicates that people suffer from tax salience and loss aversion, policymakers should design policies that work *with* these biases, rather than trying to lecture voters out of them.
HostSo, instead of fighting for transparent consumer carbon taxes, which voters will reject, they should embrace the hidden costs of producer taxes and cap-and-trade systems?
ExpertThat's one implication. If voters prefer those because the costs are hidden, perhaps policymakers should stop fighting for the textbook-perfect, transparent consumer carbon taxes and just use the tools the public *will* accept, even if they are slightly less efficient. It’s a pragmatic approach to an imperfect system.
HostAnd if a visible tax *is* deemed necessary, then it needs to be paired with an equally visible, equally salient reward.
ExpertExactly. This is why some economists advocate for "Carbon Fee and Dividend" models, where the tax revenue is mailed directly back to citizens as a physical check. The hypersalience of the tax needs to be offset with the hypersalience of the reward. That direct, tangible benefit makes the overall policy more palatable.
HostSo, the Jiang et al. paper is a masterpiece in diagnosing a political disease, showing that the public’s demand for bad climate policy is rooted in this "pass-through illusion."
ExpertIt truly is. It clearly lays out the cognitive mechanism.
HostBut the conclusion for practitioners and politicians seems to be: stop trying to teach economics to voters. Start designing climate policies that can actually survive the messy, biased reality of the human brain.
ExpertThat seems to be the most practical lesson here. Acknowledge the bias, and build policies around it.
HostSo, first, the 'pass-through illusion' is a fundamental barrier to implementing efficient climate policy. Voters aren't rejecting good policy because they're anti-environment, but because they fundamentally misunderstand how costs are distributed through the economy.
ExpertSecond, hidden costs are politically palatable, even if they're ultimately more expensive for society. Visible costs, on the other hand, trigger strong loss aversion and lead to rejection, regardless of their economic efficiency.
HostAnd third, while educational interventions can shift views in a controlled environment, the political reality of highly emotive messaging and partisan divides suggests that relying on mass economic education to change voter behavior is likely to be an uphill battle.
ExpertTherefore, policymakers need to be pragmatic choice architects. They should design climate policies that work *with* human behavioral biases, embracing lower-salience mechanisms like producer taxes or cap-and-trade, or pairing salient taxes with equally salient rewards, like carbon dividends.
HostThis brings up some interesting questions. If voters only support climate action when the costs are hidden from them, is it ethical for democratic governments to intentionally use those low-salience policies to, essentially, "trick" the public into paying for the energy transition?
ExpertAnd on the flip side, can a three-minute video on economic incidence really permanently rewire a voter's brain, or does that 'pass-through illusion' return the moment they look at their utility bill and see a different, more politically charged message?
HostIt also makes one wonder: why do economists consistently fail to anticipate the political backlash to perfectly efficient policies? Are economists suffering from their own cognitive bias by assuming humans will act as perfectly rational utility-maximizers?