# Transcript: 7 Lies People Tell Today (& the Brain Science to Beat Them)

**Date:** March 13, 2026 · 10:30 PM  
**Session:** [7 Lies People Tell Today (& the Brain Science to Beat Them)](/sessions/2026-03-13/pp1148538-7-lies-people-tell-today-the-brain-science-to-beat-them)

## Summary

Nancy Harhut reveals seven common lies people tell marketers — from claiming advertising doesn't influence them to insisting it's all about price — and presents the behavioral science principles that disprove each one. Through research-backed concepts like loss aversion, social proof, cognitive fluency, and anchoring, she demonstrates practical, actionable tactics marketers can use to influence behavior even when consumers believe they're immune to such techniques.

## Topics

`behavioral science` · `consumer psychology` · `marketing tactics` · `loss aversion` · `social proof` · `cognitive fluency` · `pricing strategy` · `storytelling in marketing` · `decision making shortcuts`

## Key Takeaways

1. People are twice as motivated to avoid loss as to achieve gain — framing messages around what customers stand to lose is significantly more effective than highlighting what they'll gain.
2. Three is the magic number for bullet points: fewer than three isn't enough, but more than three actually waters down your message by 10.4% compared to four bullets.
3. Star ratings outperform numerical ratings because of the visual completion effect — and the ideal rating to display is 4.2 to 4.5, not a perfect 5.0, which triggers suspicion.
4. Reminding people of information at periodic intervals is more effective than providing more information — sending 2-3 reminders on event day increased attendance by 40%.
5. Differential price framing (showing the incremental cost of an upgrade rather than the total price) doubled premium subscription sales in a New York Times study.

## Full Transcript

People lie in focus groups, they lie in surveys, they lie in interviews. One thing they don't usually do is they don't usually lie on purpose. They think they're telling us the truth, but the truth is they don't even know what the truth is most of the time. There are two reasons for this. First, people don't know why they did what they do. Great scientists estimate that up to 95% of purchase decision making takes place in the subconscious mind. So people don't know why they did what they did, and they make up a story that sounds good and stick with it. Second, they're really bad at predicting what they're going to do. Brain scientists have found that a total stranger can be better at predicting your future behavior than you yourself can be.

The first lie people tell us is they say they're not influenced by advertising. But brain scientists have discovered something called the effect of expectations. When people expect to experience something, they often do. Researchers at the University of Bordeaux ran an experiment with sommeliers, giving them a glass of white wine and a glass of red wine, asking them to describe the wines. The sommeliers used all the right terminology for each. The only problem was the red wine was really white wine with food coloring in it. These wine experts expected to experience red wine, and that's what happened.

As marketers, we can use the effect of expectations through customer testimonials and third-party endorsements. Behavioral scientists have also identified mirror neurons. The brain doesn't do a great job of differentiating between what you do, what you think about doing, and what you watch somebody else do. Carnival Cruise Lines shows pictures of happy travelers rather than boats or destinations, because as prospective travelers look at pictures of happy travelers, their brains start to fire as if they're having a great time on vacation.

Concrete language can also be very effective. Researchers ran an experiment at an e-commerce site, and for 90 days they used nothing but concrete, specific language. Instead of saying 'pants,' they would say 'blue jeans.' Over those 90 days, spend increased by 30%. Dropbox doesn't just say you're running out of space — they say you've used 87% of your available space. Publishers Clearing House says 'no one wants to be the person who threw away millions' rather than 'no one wants to be the person who didn't win our sweepstakes.' Specific copy prompts more sales than vague copy.

Loss aversion is another powerful principle. People are actually twice as motivated to avoid the pain of loss as they are to achieve the pleasure of gain. Researchers posing as salespeople for a home insulation company found that 150% more people wanted home insulation when told they would lose 75 cents a day versus save 75 cents a day. ProFlowers says 'order today or pay more — prices increase tomorrow.' An insurance aggregator says 'many drivers in Massachusetts are overpaying.' Loss can trigger action faster than gain.

The second lie people tell us is they say they want more information. The truth is, people don't want more information — they actually want less. Behavioral scientists have identified the duration heuristic: if something looks like it's going to take a lot of time or effort to get through, people just don't bother. Two Harvard professors who wrote 'Writing for Busy Readers' worked with a nonprofit client and removed every other paragraph from a fundraising email. The shortened version generated 16% more money.

There's a magic number for bullet points: three. If you have one or two bullets, it's not enough. If you go beyond three, you water down your message. Researchers from UCLA and Georgetown found that you're 10.4% more persuasive with three bullet points versus four.

Repetition theory, developed by German psychologist Hermann Ebbinghaus, shows that to get information from short-term memory into long-term memory, you want to remind people at periodic intervals. It's not about giving more and more information — it's about reminding people of what you already told them. A company called Guru Events found that sending two to three reminders on the actual day of an event produced a 40% increase in attendance among people who had already registered.

Cognitive fluency is the finding that people prefer information that's easier to think about and easier to understand. They don't just prefer it — they judge it to be more truthful, more accurate, and more believable. Researchers took doctoral thesis papers and replaced every nine-letter-or-more word with a shorter synonym. The PhDs who reviewed them preferred the versions with shorter language and judged the authors to be more intelligent. Edelman Financial Engines uses a red light, yellow light, green light system on quarterly statements to make them easy to understand. Canadian food packaging includes context: '5% or less is a little, 50% or more is a lot.'

The third lie people tell is that our tricks don't work on them. Yet research shows an 83% increase in engagement when you use before and after pictures. Brain scientists have identified the proximity effect: the closer those two pictures are to each other, the stronger the relationship people perceive, and the more effective they think the product is.

Marketers use star ratings, and people claim the stars don't fool them. But in countries where people read left to right, there's left-digit bias — when we see 3.5, our brains register three. Cornell University researchers identified the visual completion effect: when part of a picture is missing, our brain fills it in. When we see three and a half stars, we actually perceive four stars. People pay more for star ratings versus the exact same numerical rating. Star ratings close to a call to action increase conversion rates by 21%. The ideal number of stars is 4.2 to 4.5 — showing nothing but five stars makes people suspicious.

Free shipping triggers the zero price effect: when there's no cost, people perceive no downside, only upside. One out of every two online shoppers will spend more than intended to hit the free shipping threshold — on average 30% more. The goal gradient effect shows that the closer we get to a goal, the more we try to reach it. The endowed progress effect explains why loyalty cards with 12 boxes and two pre-checked outperform cards with 10 blank boxes: people are 79% more likely to complete the purchases when they feel they have a head start.

The fourth lie is that our messages go in one ear and out the other. But brain scientists have identified the generation effect: when people have to work just a little bit to get a message, they're more likely to remember it. University of Toronto researchers found that people who had to generate a missing word in synonym pairs remembered 10 to 15 more pairings than those who received complete lists. Constant Contact uses this by omitting letters in a word, and The Economist ran a classic ad attributed to 'a management trainee, age 42' — making you pause and realize the point.

Alliterative phrases deliver a 22% increase in memorability and a 7% increase in credibility. Words that start with the same letter are encoded in the same spot in the brain, making them easier to recall. JetBlue uses 'fab fed fares,' and Lands End describes water shoes as 'better than barefoot.'

Storytelling has a massive impact on memory. Stanford University researchers found that weaving facts into a story increased recall from 13% to 93% — a 615% increase. In nonprofit marketing, the identifiable victim effect shows you should tell the story of one person, not many. Narrative transportation theory explains that when we read or hear a story, we get transported into it and start feeling everything the main character feels.

The fifth lie is that people say they make up their own minds. Brain scientists have identified social proof: people often do what people like them do. A researcher at Peking University found that labeling menu items as 'popular' at Chinese restaurants increased their popularity by 13 to 20%. Oracle asks 'Why do thousands of companies switch from QuickBooks to NetSuite?' Wine Enthusiast says 'this customer favorite is back in stock' for a double hit of social proof.

The authority principle shows that ever since childhood, we've been taught to recognize and respect authority. Vanderbilt University researchers found that 36% of people picked up a crumpled paper bag when asked by a regular person, but 82% did when asked by a security guard. Even a uniformed milkman got 64% compliance. The Farmer's Dog shows endorsements from Google, USA Today, Vogue, and Fast Company. In any context, the perceived authority figure commands compliance.

Identity labeling is another powerful tool. Researchers at a Chinese university found that female students who were reminded of the stereotype that Asians excel at math scored better than those reminded of the stereotype that women don't do well in math. St. Jude's Children's Hospital addresses potential donors as 'generous, dedicated, compassionate' before asking for a donation. Dunkin' Donuts' 'America Runs on Dunkin' has activated customers' identity as hardworking, salt-of-the-earth people for 20 years.

The sixth lie is that people say they carefully consider before they buy. Commitment and consistency is a powerful principle: once you make a decision, you like to remain consistent with it. Researchers in LA found that only 17% of homeowners agreed to put up a billboard supporting safe driving. But among those who had previously agreed to put up a tiny three-inch sign, 76% agreed to the billboard. Delta offers a 30-day Sky Club membership for $90, then upgrades you to full membership. Harry's offers a $3 trial set, losing money on it but gaining subscribers.

Anchoring also influences purchase behavior. Researchers put Campbell's Soup on sale with no limit, and people bought an average of 3.3 cans. With a 'limit of 12' sign, people bought an average of seven cans. Bath & Body Works sets limits of 24, and Lenovo limits special codes to five units, both leveraging the anchoring effect.

Extremeness aversion shows that people naturally gravitate toward middle choices. UCLA and University of Chicago researchers found that 65% of people chose the middle option when given three choices. An insurance company used a graph showing a customer's position relative to the range of coverage, triggering the gut feeling of lagging behind, and achieved a 459% lift in sales. Restaurants now show tip suggestions of 20%, 22%, and 25%, knowing customers will pick the middle.

The seventh and final lie is that it's all about the price. Differential price framing shows that if you want to sell more premium products, don't compare total prices — focus on the incremental difference. New York Times sold twice as many full subscriptions when they said 'for $7 more' versus showing the $16.99 total price alongside the $9.99 basic price.

Bundling increases average order value. A neuroeconomist named George Loewenstein found that each purchase triggers a hit of pain in the brain. Bundling multiple items under one price creates only one pain signal. Hedonic bundling — putting the discount on the most indulgent item — moved sales from 62% to 82% in one study. An internet provider bundled service with local news and threw in HBO for free, making the indulgent item the 'bonus.'

Transaction utility, identified by Richard Thaler from the University of Chicago, explains why showing an item 'was $48, now $40' outsells pricing it at $39. People compare to a reference point to decide if it's a good deal. Buy one get one free outsells putting both items at half price, even though the math is identical. How a price is presented and positioned determines whether people think it's a good deal.

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*Source: stt · Language: en · Model: claude-opus-4-6*

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