Behavioral economics & viral marketing case studies
Veblen Goods 
Details
Veblen Goods are products people want more when they cost more. The high price doesn’t just signal quality, it creates desire by signaling status.
Think of a limited-edition luxury watch that becomes even more wanted after its price increases. The higher cost makes ownership rarer and more visible, so demand rises instead of falling.
In marketing, this effect appears in categories where status, visibility, and exclusivity matter more than utility. For these products, lowering the price would actually reduce their appeal.
Veblen Goods 
Guide
Veblen Goods 
Research
The research from 2018 shows when higher prices increase demand, and when they stop working. The author ran 8 controlled experiments using real luxury products (watches, trench coats, travel bags, champagne). Prices were raised by ~6% (low) and ~11% (high), which matches real luxury pricing (~3-10% per year, confirmed by experts). Results depend entirely on the motivation for why people buy.
Overall conclusion:
Price increases of ~6-11% raise demand only when price clearly signals status or exclusivity. Above this range, the effect often disappears and demand returns to normal (higher price >> lower demand). Price works only as a social signal, not as a cost, quality test, or pleasure tax.
Veblen Goods 
Examples
1. Hermès Birkin
Birkin bags officially start around $10,000-$12,000, but rare versions resell for $50,000-$500,000+, which only increases demand and status signaling. The difficulty and price make the bag a status symbol. People want it because most people can’t afford it.
Supreme sells basic items (T-shirts, bricks, crowbars) at very high prices. The price itself signals cultural status and insider knowledge. Cheap Supreme would not be Supreme.
Underdog Effect Details
Underdog Effect means we root for people or brands that seem disadvantaged but still fight hard. It’s about telling a story of a small start, low budget, a big competitor to fight, and steady effort against tough odds. Effort against the odds makes us feel emotionally connected.
Think of a tiny startup showing how they build everything with almost no money while going up against a huge company. Their honesty and effort make you want them to win.
In marketing this bias shapes storytelling, brand positioning, and challenger messaging. When customers see a brand as the scrappy fighter, they support it more actively.
Underdog Effect Guide
Underdog Effect Research
The researchers found that the Underdog Effect makes people more likely to buy, choose, and stay loyal to a brand.
This effect is even stronger for people who see themselves as underdogs, especially when they are buying something for themselves, not for others. It also works better in countries where underdog stories are an important part of the culture.
Underdog Effect Examples
1. Apple's "1984" commercial
In its early days, Apple positioned itself as the underdog against the giant IBM. Their now iconic "1984" commercial, showed a dystopian future dominated by "Big Brother" (IBM), with Apple as the rebellious force breaking the mold. This ad solidified Apple's reputation as the innovative and rebellious alternative to the status quo.
Avis, the car rental company, was always in the shadow of Hertz, who was an industry #1. Avis used this situation to their advantage with their "We Try Harder" campaign. Because they were #2 in the market, they had to put in extra effort to please their customers. This campaign was immensely successful and helped Avis increase its market share.
When a newly-created Instagram account of an egg announced that it wanted to beat Kylie Jenner in terms of the most-liked photo, people responded. A simple egg photo collected over 52M likes within days.
Authenticity Effect Details
Authenticity Effect means we trust and value things that feel real, honest, and unpolished. When something looks too staged or too perfect, our guard goes up.
Think of a founder recording a simple phone video explaining why they started their company. No studio, no script, just a real person talking. It feels more believable than a glossy ad saying the same message.
In marketing this bias shapes brand voice, storytelling, behind-the-scenes content, and honest communication. When people sense genuineness, their trust and loyalty rise fast.
Authenticity Effect Guide
Authenticity Effect Research
The study examined how the value of a sponsored message and the credibility of an influencer shape trust, and how that trust then drives brand awareness and purchase intention.
Researchers surveyed social-media users who follow influencers.
Overall, influencer marketing works best when the content is genuinely helpful and the influencer is seen as credible, because these two factors build trust that leads people toward the brand and toward buying.
Authenticity Effect Examples
1. Liquid Death
Liquid Death sells canned water but uses metal music energy, dark humor, and anti-corporate vibes. Because the tone feels real and not “safe marketing,” people believe the brand more and share it more. Authenticity turned a commodity product (water) into a cult brand worth over $1B.
Nerdy Nuts is a small Peanut Butter, family business that has grown crazy fast due to the quirky product and witty marketing that feels authentic. Customers see the real founders, real kitchen energy, and honest communication, which makes the brand feel trustworthy and human.
This authenticity, combined with weekly product drops and creator partnerships, helped Nerdy Nuts grow from $7k to over $1M in sales within 4 months.
Nostalgia Effect Details
Nostalgia Effect means we respond more strongly to things that remind us of the past. Memories, old styles, and familiar moments create warm feelings that lift our judgment.
Think of hearing a song from your childhood and instantly feeling more positive, even if your day was stressful. The memory colors the moment.
In marketing this bias shapes retro packaging, old-school branding, classic sounds, and “remember when” campaigns. Nostalgia makes products feel safer, warmer, and more meaningful.
Basically, the past makes the present feel better.
Nostalgia Effect Guide
Nostalgia Effect Research
This research ran 6 experiments. In every experiment, nostalgia made people value money less or want money less.
Key findings:
Nostalgia increases social connectedness (people feel closer to others). When this social need is filled, people feel safer and less focused on self-protection or financial security. Because of that, money becomes less important, so they are more willing to spend or give.
When nostalgia is activated (ads, memories, old products, retro style), people spend more easily because they feel emotionally full and less attached to their money.
Nostalgia Effect Examples
1. Pokémon GO
Pokémon GO exploded in 2016 because it brought back childhood memories of collecting creatures. Millions of adults who hadn’t played games in years returned because the app made them feel like kids again. Nostalgia powered record downloads, global crowds, and $500M revenue in the first 60 days.
Stranger Things became a global hit because it recreated the exact look and feel of 1980s movies: neon colors, synth music, walkie-talkies, arcade games, and Spielberg-style adventure.
Adults who grew up in the 80s and 90s felt a strong emotional pull. The show reminded them of childhood summers, old friendships, and classic films. This nostalgia made people binge the series, share it like crazy, and turned a mid-budget show into one of Netflix’s biggest cultural phenomena.
Humor Effect Details
Humor Effect means we remember things better when they make us laugh. A joke, a funny twist, or a light tone sticks in the mind far longer than something serious and flat.
Stories & humor are the ultimate shortcuts to deeper connections and earning trust of your customers. Humor bypasses skepticism.
Think of seeing a billboard with a clever joke. Even if you glance at it for a second, the line stays with you, while dozens of normal ads disappear instantly.
In marketing this bias shapes brand voices, ads, emails, and social posts. Humor boosts attention, recall, and shareability because it gives the brain a little reward for paying attention.
Humor Effect Guide
Humor Effect Research
This meta-research from 1992 reviews dozens of studies on how humor works in advertising.
Humor grabs attention very well but does not always convince people. About 24% of TV ads used humor, and 94% of advertisers said humor is an effective way to get attention, while 55% of research directors said humor works better than non-humor ads for attention.
Humor consistently lifts attention, but its effect on understanding the message is mixed, with:
Humor also does not guarantee stronger persuasion, although one analysis from 1982 found that 31% of humorous ads performed above average in persuasion tests.
The strongest finding in the entire review comes from the role of liking. A large 1991 study with almost 15,000 interviews showed that liking a commercial predicted which ad would win in sales 87% of the time, and a simple like-or-not-like measure predicted success 93% of the time.
People who liked a commercial a lot were also twice as likely to be persuaded. Humor supports this effect because when people felt an ad was funny or clever, it predicted success 53% of the time, while calling an ad boring predicted failure 73% of the time.
Overall, humor is great for getting attention and increasing liking, and since liking is one of the strongest predictors of sales, humor can indirectly make ads more effective, especially when the humor is connected to the product and used for simple, low-involvement decisions.
Humor Effect Examples
Their first ad used deadpan humor, swearing, and absurd scenes to explain a boring product: razor subscriptions. The humor made the message unforgettable, “Our blades are f***ing great.”.
Result: over 12k orders in 48 hours and a company later sold for $1B.
After the 2008 shoe-throwing incident became global meme material, Alex Tew created a funny browser game called Sock and Awe in just 3 hours.
The humor made it instantly shareable. By day 3, it had been played 1.4M times, and by day 6, the site reached 9M visitors.
The game was sold within days, and the team later used the traffic to collect 120k emails, helping them launch their next project (PopJam).
Old Spice used surreal, rapid-fire humor that completely broke deodorant-ad conventions. The absurd style made the brand memorable to both men and women, turning a dying product line into a cultural hit. Sales jumped 125% year-over-year after the campaign.
Framing Effect Details
Framing Effect means the way information is presented changes how we feel about it, even when the facts stay the same. The frame shapes the reaction.
Think of hearing that a product is 90% effective versus hearing it has a 10% failure rate. Same numbers, but one feels safe while the other feels risky. The wording sets the mood.
In marketing, highlighting gains feels motivating, highlighting losses feels urgent, and shifting perspective can make the same offer look far more attractive.
Framing Effect Guide
Framing Effect Research
People were told a disease would kill 600 people. They had to choose between two programs.
The options were identical, only the wording changed.
1. Gain frame (positive)
Results:
2. Loss Frame (negative)
Results:
Same math. Different frame. Completely different behavior.
Framing Effect Examples
1. BetterHelp
Betterhelp therapy reframes therapy as normal self-care. The homepage frames depression as something normal. This reduces stigma and makes the purchase feel proactive, not reactive.
Liquid Death framed water as rebellious “Murder Your Thirst” beverage. They took a boring product (water) and reframed it as a punk, metal, anti-plastic energy-drink vibe.
Halo Effect Details
Halo Effect means we judge a person or a thing based on one strong trait. That single trait (good or bad) shapes our whole impression, especially during the first experience.
Think of meeting someone who’s kind right away. You instantly assume they’re also trustworthy and reliable. The same works in reverse, one rude moment can make everything else about them feel worse. The first trait sets the tone.
In marketing, a great first interaction, a beautiful design, or an excellent product lifts the entire brand. A bad first moment can drag everything down.
Halo Effect Guide
Halo Effect Research
In 1920, psychologist Edward Thorndike studied how officers rated their soldiers on things like leadership, appearance, intelligence, and loyalty. He found that if a soldier looked good in one area, officers automatically gave them high scores in the other areas too.
Later research found one big reason: attractiveness. Good-looking people are often seen as smarter, kinder, and better overall. Jurors are even less likely to think attractive people are guilty. But it can backfire. Other studies show people also think attractive people are more vain, less honest, and more likely to use their looks to get what they want.
Halo Effect Examples
1. Red Bull - extreme sports
Red Bull sponsored extreme sports, and that cool, high-adrenaline world created a halo around the drink. People felt the product itself was more energizing because of its associations. The drink became a lifestyle symbol, not just a beverage.
Patagonia consistently invests in pro-planet actions — repairs, recycling, “Don’t Buy This Jacket,” activism, and giving profits to environmental causes.
This moral reputation creates a halo: people believe all Patagonia products must be high-quality, fair, sustainable, and worth paying extra for.
Customers reward the brand with loyalty and higher willingness to pay, even without comparing specs.
Noble Edge Effect Details
Noble Edge Effect means a brand looks even better when it does something good and can show it wasn’t just for profit. When motives seem pure, the positive impression grows stronger.
Think of a company donating part of its revenue to a cause and being fully transparent about where the money goes. People rate the brand as more trustworthy and higher-quality, not because the product changed, but because the intention behind it feels honest.
In marketing this bias boosts brands that show real ethics, responsible sourcing, or community impact. When customers sense sincerity instead of PR polish, loyalty goes up.
Noble Edge Effect Guide
Noble Edge Effect Research
In the study, participants drank the same wine but rated it very differently depending on the label. When the label said the company gives part of its profits to charity, people said the wine tasted better and judged its quality higher, raising taste ratings by 19-25% and overall value and willingness-to-pay by 10-15%.
The effect stayed strong even when the product was objectively bad (like bitter chocolate), meaning charity created a halo that changed the actual sensory experience.
But this only worked when the charity action looked truly altruistic, not self-serving.
Noble Edge Effect Examples
1. Patagonia
Patagonia is famous for openly putting the environment above profit - repairing clothes, recycling materials, donating profits, and encouraging people to buy less. Because these actions look costly for a premium brand, customers trust them more and feel the high prices make sense.
Lordicon publicly promises to donate $1 out of every $10 profit to help people in need. This donation is costly for the company and not required, which makes customers trust the brand’s intentions more.
Semiotics Details
Semiotics means we understand things through signs, symbols, and cues, not just words. Our brains read meaning from colors, shapes, icons, and context long before we think consciously.
Think of seeing a red warning sign. You feel alert instantly, even before reading any text. The color and shape already told your brain what to expect.
In marketing semiotics shapes how people feel about a brand. A font can signal luxury, a color can signal safety, and an icon can explain a function without a single word. The visuals carry the message.
Semiotics Guide
Semiotics Research
The study shows that brands work like sign systems. Logos, colours, names and stories create symbolic meaning that often matters more than the product’s features. Her research found that when companies manage these meanings well, they increase brand equity, loyalty and long-term financial value. In the end, people don’t just buy the product — they buy the meaning behind it.
Semiotics Examples
1. NYC Yellow Cabs
Yellow = high visibility + urgency + city movement.
NYC turned the color into a symbol. When people see a yellow cab, they instantly think city authority, speed, and trust.
Red Bull rarely sells energy drink. Instead, they use symbols like wings, jumps, sky, upward motion, adrenaline. These visuals communicate action, height, risk-taking, and power.
Picture Superiority Effect Details
Picture Superiority Effect means we remember images much better than words. Our brains process visuals faster, deeper, and with far less effort than text.
Think of seeing a stunning mountain photo that takes your breath away versus reading a paragraph describing the same view. The picture hits instantly, while the text needs work.
In marketing this effect makes visuals do the heavy lifting. Photos, icons, and simple graphics stick in memory, boost understanding, and make ideas feel more real.
Picture Superiority Effect Guide
Picture Superiority Effect Research
The Picture Superiority Effect was demonstrated in a 2008 study that asked participants to memorize random pairs of words and random pairs of images.
The pairs were then reorganized, and participants were asked to spot what changed. The experiment showed that people were overwhelmingly better at identifying the differences in image pairs than in word pairs.
John Medina found that people remember only about 10% of plain text after 3 days.
But when the same info is shown with a relevant image, people remember around 65% of it 3 days later.
According to marketing-industry influencer Krista Neher, the human brain can process images up to 60,000 times faster than words.
Picture Superiority Effect Examples
1. Infographics and visual content
Infographics work because people read and remember visuals faster than text. Charts and icons turn messy data into something you can understand in one glance, which is why infographic posts get shared way more than essays.
Kickstart Side Hustle became a real business thanks to the sketch cards. Before them, people liked the idea but didn’t feel much. Once they saw the sketches, they loved it. The concepts suddenly felt tangible, and easier to understand and remember.