Investing Psychology Chapter 4 Part 2: Trust, Language, and the Social Side of Money

In Part 1 we covered how groups and social pressure mess with your investment decisions. Now let’s get into something even sneakier: how language, trust, and social networks warp the way we think about money.

This second half of Chapter 4 is packed. Dividends, memes (the original kind, not internet cats), used car lemons, peacock tails, and why your future self is basically a stranger to you. Let’s go.

Dividends Are Weirdly Emotional

People get really angry when companies cut their dividends. Even when keeping that cash inside the company is the smart move for growth.

Researchers Shefrin and Statman found that people treat stocks as risky bets but treat dividends like safe income. Same company, same money, but in our heads it lives in two different mental boxes. Classic framing.

But here’s the useful part. Investors who anchor their stock valuation to dividends tend to be more rational. A dividend is something real. You can’t hype a dividend into existence the way you can hype a share price. Stocks without dividends? Their valuations can fly off into fantasy land because there’s nothing holding them down.

Lesson from the book: Dividend-paying stocks are easier to value. For every wildly successful growth stock you heard of, hundreds failed. Dividends are a solid anchor.

Language and Memes Drive Investing

Not TikTok memes. Richard Dawkins memes. Ideas that spread from brain to brain through social interaction, like a virus.

Investors are especially bad at questioning these shared ideas. Remember “buy the dip” from the 1990s? Everyone repeated it like a prayer. Then the market took a decade-long dip and people lost a lot of money waiting for the bounce.

Robert Shiller, who predicted the 2000 crash, argued that markets sometimes shift not because of economics but because of shared stories. The 1990s asset boom? Partly driven by the meme that low interest rates mean you should borrow more to invest. Shiller showed it’s a fallacy. People confuse nominal interest rates with real ones. When everyone believes the same wrong thing, you get bubbles.

Lesson from the book: Memes make us invest alike. Stocks don’t care about our beliefs. Invest on fundamentals, not popular slogans.

We’re All Embedded in Social Networks

Sociologist Mark Granovetter calls this “embeddedness.” Our economic decisions aren’t pure math. They’re tangled up in our relationships. We trust people who trusted people who trusted someone who might be wrong.

Wild example from the book. In 2001, professional traders lost $3 billion collectively when the European Commission blocked the GE-Honeywell merger. These were pros who specifically practiced questioning their own assumptions. But they were all checking against each other, all embedded in the same network, all working from the same wrong assumptions. Everyone lost.

Lesson from the book: Cross-checking with smart people is no guarantee. If your whole network shares the same blind spots, reflexivity just amplifies the error.

Keynes’s Beauty Contest

We’re natural mind-readers. Psychologist Simon Baron-Cohen proposed that our ability to guess what others think is what makes human society work.

Keynes compared investing to a newspaper beauty contest where you don’t pick who you think is prettiest. You pick who you think everyone else will pick. Most investors do this. They buy stocks they think other people will buy, not stocks they actually analyzed. Keynes started this way too. When he switched to fundamentals, his returns got way better.

Great story from the book: Clever Hans was a horse that could supposedly do math by tapping his hoof. Turned out he was just reading the body language of whoever asked the question. When someone who didn’t know the answer asked, Hans stopped being clever. We do the same thing when investing. We read the room instead of reading the balance sheet.

Lesson from the book: Stop guessing what other investors will do. Clever Hans wasn’t clever. Focus on fundamentals.

Trust, Deception, and the Lemons Problem

One theory about why human brains are so big: we’re in an evolutionary arms race of deception. Bigger brain = better liar. And we’re bad at detecting lies. Even experts fail at it.

George Akerlof won the Nobel Prize for his “lemons” problem. In the used car market, buyers can’t tell good cars from bad ones. So they discount all cars. Good car owners pull out. Only lemons remain. Same asymmetry hits investing. Management always knows more than you. When we can’t judge quality directly, we fall for signals. Stock price going up? Must be good. Company spending millions on ads? Must be strong. But these signals are as likely to come from a lemon as a peach.

Lesson from the book: Price movement and flashy marketing are unreliable shortcuts. Learn to spot lemons by looking at balance sheets, not billboards.

The Peacock’s Tail and Facebook Hype

Why do peacocks carry those ridiculous tails? Biologist Amotz Zahavi argued the tail itself is the signal. “I’m so fit I can survive despite this handicap.” Companies do the same with advertising. It’s not about the message. It’s about showing they can afford to spend that much.

Facebook’s IPO was a perfect storm. Massive marketing, beauty contest investing, everyone wanted in because everyone else wanted in. Short-term disappointment followed.

Social media makes it worse. Research found that successful short-term traders broadcast their wins on social networks. People copy them. But many of these “successful” traders just got lucky with high-risk bets. Better communication doesn’t mean better investing. We hear about wins and never about losses.

Lesson from the book: Social networks spread success stories, not the full truth. Before following some investing guru, ask them about their biggest failure.

Your Future Self Is a Stranger

We don’t save enough for retirement. The usual explanation is we’re bad at delayed gratification. But researchers Bryan and Hershfield proposed something different: we simply don’t feel connected to our future selves.

Saving for retirement literally feels like giving money to a stranger. That old person you’ll become? Your brain treats them like someone you’ve never met. But when researchers framed it as helping someone you care about, people saved more. Think of old-you as a friend you want to help.

Lesson from the book: Treat your future self as your best friend. One day you’ll thank yourself.

Chapter 4 Key Takeaways

Richards wraps up with seven points:

1. We copy other people. Keep asking uncomfortable questions.
2. Investment groups drift toward risky positions. Push back.
3. Framing is unconscious. Treat your portfolio as one pool, not separate mental accounts.
4. Beauty contest investing doesn’t work. Keynes learned the hard way.
5. Our built-in lie detectors fail in finance. Corporate signals are manufactured.
6. Believing other people’s success stories leads to bad investments.
7. Connect with your future self. The better you relate to old-you, the more you’ll invest wisely.

Big theme: we are social creatures. Great for survival. Terrible for investing.

Next up: Chapter 5 Part 1, where we find out why the experts aren’t much better than the rest of us. Spoiler: their brains have the same bugs.