The Psychology of Bubbles
📖 7 min read
Quick Answer
Bubbles are not really about charts — they are about human brains under the spell of easy money and social pressure. The same handful of mental shortcuts have trapped doctors, engineers and even Nobel laureates in every mania from tulips to crypto. Knowing them is your best defense.
💡 Think of it as…
A crowd running toward an exit because everyone else is running. Most people have no idea why — they just see the herd move and assume someone knows something. In markets, that herd instinct is millions of years old and almost impossible to switch off.
FOMO and social proof
When your neighbor, your barber and your timeline are all getting rich, sitting out feels physically painful. We are wired to copy the group (social proof), and in a bubble the group is buying — so we buy, often at the worst possible moment.
Greater-fool thinking
In a mania, people stop asking "is this worth it?" and start asking "can I sell it to someone for more?" That works until you become the last buyer — the greater fool with no one left to sell to. The exit is always more crowded than the entrance.
"This time is different"
Every bubble invents a reason the old rules no longer apply — new technology, a new era, a new paradigm. Sometimes there is real truth in it, which makes the story even more seductive and the eventual reckoning more brutal.
Recency bias and anchoring
After months of gains, our brains assume the trend will continue forever (recency bias) and we anchor to the peak price as "normal", treating any dip as a discount. These shortcuts feel like insight but are exactly how tops are formed.
🔑 Key takeaway
Bubbles run on FOMO, herd instinct, greater-fool logic and "this time is different." You cannot delete these instincts — but naming them, using rules instead of emotions, and never using money you can’t lose are how you avoid being the last one holding.
What it means for you
These biases hit hardest in fast-growing, mobile-first markets where social media and group chats amplify every hot trend — exactly the conditions across much of Asia. The antidote is a plan made in calm times: decide your strategy and position size before the euphoria, not during it.
ຄຳຖາມທີ່ມັກຖາມເລື້ອຍໆ
How do I avoid FOMO investing?▼
Decide your rules in advance: how much to invest, over what schedule (e.g. dollar-cost averaging), and your exit plan. Following a pre-set plan beats reacting to emotion in the heat of a rally.
Why do experts fall for bubbles too?▼
Intelligence does not switch off social and emotional instincts. Experts also face career pressure to stay invested, and the data genuinely looks great until the very top.
Does knowing the psychology protect me?▼
It helps a lot, but awareness alone is not enough — you need structural defenses: position sizing, no leverage, and automatic rules that act for you when emotions run high.