The Michael Shermer Show
The Michael Shermer Show

103. Robert Frank — Under the Influence: Putting Peer Pressure to Work

Psychologists have long understood that social environments profoundly shape our behavior, sometimes for the better, often for the worse. But social influence is a two-way street — our environments are themselves products of our behavior. Under the Influenceexplains how to unlock the latent power of

Featured Speakers

Robert Frank Guest

Topics Discussed

Episode Summary

Executive Summary: Robert Frank argues that peer influence and social contagion shape behavior, morals, and policy far more than we admit. Using smoking, obesity, climate action, gay rights, Me Too, and tax policy, he says modest individual choices can cascade into major social change. He favors pragmatic, incentive-based policies over pure rights talk or heavy-handed regulation.

Main Topics: Peer Pressure and Behavioral Contagion (Priority: 5/5): Frank’s core thesis is that people are deeply influenced by the behavior of those around them, and that these contagion effects can be harnessed for public good or cause harm. Smoking as a Policy Case Study (Priority: 5/5): He uses smoking to show that the biggest harm is not just secondhand smoke, but the way smokers increase the likelihood that others—especially children—will smoke. Climate Change and Incentive Design (Priority: 5/5): Frank extends his argument to decarbonization, claiming taxes and social imitation can accelerate pro-climate behavior without relying only on sacrifice or mandates. Moral Progress Through Social Change (Priority: 4/5): The conversation covers gay rights, Me Too, and anti-racist norm change as examples of rapid shifts driven by speech, visibility, and imitation rather than only legislation. Liberty, Rights, and Utilitarian Tradeoffs (Priority: 4/5): Frank repeatedly contrasts rights-based arguments with cost-benefit reasoning, defending taxes or restrictions when individual liberty imposes broader social costs. Controversial Policies: Capital Punishment, Abortion, Kidneys, Polygamy (Priority: 4/5): The discussion explores how his framework applies to hard cases where autonomy, harm, and inequality collide, including organ sales, abortion, and polygamy. Polarization and Productive Conversation (Priority: 3/5): Frank and Shermer discuss how framing, neutral questions, and careful dialogue can reduce resistance in polarized debates and open people to reconsidering views.

Key Arguments: People underestimate how much their choices affect others indirectly through imitation, norms, and social ripple effects. Smoking should be taxed and discouraged not only because of direct health harms, but because smokers increase smoking in their social network. Behavioral externalities are equivalent in logic to pollution, noise, or congestion externalities and can justify taxation. Voluntary actions like buying hybrids, biking, or installing solar panels matter because they influence others and reshape personal identity. Major moral shifts—gay rights, Me Too, anti-racist norms—often begin as behavioral contagion before they become law. Climate policy should target the wealthy and focus on effective decarbonization; taxing high-end consumption can fund public solutions with little sacrifice to wellbeing. Rights matter, but they are not absolute; some claims to liberty fail when they impose larger harms on others, as with smoking or capital punishment. Productive persuasion comes from asking non-threatening questions and using analogies rather than directly attacking people’s identity or worldview.

Data Points: Smoking initiation effect: 25% more likely - Frank says if the share of a girl’s friends who smoke rises from 20% to 30%, she becomes 25% more likely to start or remain a smoker. Obesity contagion: 5% more likely - He cites a military relocation study where a family moving to a county with 1% higher obesity rate made adults 5% more likely to become obese. Smoking decline timeframe: last couple of decades - Frank says smoking rates fell rapidly over the last couple of decades, too quickly to be explained by taxes and bans alone. Solar panels clustering: houses with panels are almost always next to a house that has one - He uses Google Project Sunroof-style neighborhood clustering as evidence of social contagion in adoption. Climate effect estimate: 14 degrees centigrade - He mentions a recent study suggesting that under extreme CO2 scenarios, temperature increases could reach 14°C above other causes. Human affiliation decline: 25% of all Americans - Frank says roughly 25% of Americans now report no religious affiliation. Millennial non-affiliation: 33% - He says about a third of millennials have no religious affiliation. Generation Z non-affiliation: 40% - He estimates about 40% of Gen Z have no religious affiliation. 1970s/1980s life expectancy claim: Smokers die earlier and collect less pension - He argues smokers are a net plus on government budgets because they die earlier and draw fewer pension and chronic-care benefits. Workweek benchmark: 40 hours - Frank notes that overtime penalties helped push the standard workweek down from much longer hours. Former workweek: 80 hours - He says many aspiring professionals still work 80-hour weeks when not constrained by labor rules. Marital tax example: $1,000 per month - Shermer says his partner would need to be paid about $1,000 more per month to offset marital tax-related differences. UBI example: $12,000 per person - Frank references Andrew Yang’s suggested annual UBI as a benchmark in discussing risks of household pooling. Alternative UBI household amount: $30,000 to $40,000 - Frank says a UBI sufficient for a family of four in an urban area would need to be in this range. Solar vs golf-course land use: same as golf courses in the U.S. - He says the land required for U.S. solar generation is roughly comparable to current golf-course acreage. Loving v. Virginia: 1967 - Shermer cites the date interracial marriage was legalized nationwide in the U.S.

Pivotal Quotes: "The real harm you do when you smoke is to make others more likely to smoke." — Robert Frank: Frank’s central claim about why smoking is socially harmful and why tax/regulation is justified. "We become who we are. We're not born into the world." — Robert Frank: He explains why repeated small actions can reshape identity and future political behavior. "Truth carries within itself an element of coercion." — Hannah Arendt (quoted by Robert Frank): Used to describe how reasonable arguments can pressure listeners into reconsidering their beliefs.

Implications: Listeners should think less about isolated personal choice and more about social spillovers. Frank’s framework favors smart taxes, defaults, and norm shifts to tackle smoking, climate, and inequality while preserving freedom where possible.

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