Behavioral Biases & Investor Psychology

Finck: Temperament matters more than IQ in investing

Clay Finck

“Success in investing does not correlate with IQ once you have ordinary intelligence. What matters more is the temperament to control urges that lead other people into trouble, a point illustrated by Warren Buffett. Daniel Kahneman's research on behavioral biases like loss aversion, overconfidence, and cognitive biases reveals systematic and repeatable errors in human reasoning that are particularly relevant to investors.”

Haisley: Using defaults and process friction to counter emotional trading decisions

Emily Haisley

“Behavioral nudges like setting default position sizes can guide traders toward more rational decisions while still allowing for justified deviations. By requiring traders to document reasons for deviating from defaults, organizations add 'process sludge' that forces deliberate thinking rather than emotion-driven reactions.”

Zook: Fear drives faster market declines than greed drives gains

Christopher Zook

“Fear and greed are the two primary motivators in investment behavior, but fear is more powerful than greed. This asymmetry explains why stock markets decline rapidly (falling 10% quickly) while gains tend to occur in a slower, stairstep fashion. The psychological dominance of fear over greed creates observable patterns in market movements.”

Greenig: Anchoring bias makes it hard to imagine rates far from current levels

Doug Greenig

“Anchoring bias is one of the most profound and persistent behavioral biases affecting financial forecasting. People struggle to imagine interest rates moving significantly beyond their recent levels—for example, experienced investors in 2008 couldn't envision rates dropping below certain thresholds that later proved quite high, and even the notion of negative interest rates seemed absurd in 1993 despite later becoming reality.”

Grieve: Psychological biases in AI stock investing

Kyle Grieve

“Investors exhibit multiple psychological biases when evaluating AI-adjacent stocks like Broadcom. These include herd mentality (wanting to fit in during rallies), loving tendency (seeking companies similar to successful holdings like Nvidia), and enthusiasm bias (where even management may be overly enthusiastic about AI). Regularly analyzing these psychological misjudgments helps investors think more rationally and avoid letting biases dampen realistic fundamental analysis.”

Froug: Emotional barriers and lack of connection drive investment avoidance

Aaron Froug

“Most people avoid investing due to emotional effort, fear of being wrong, and lack of understanding of abstract financial products. The jargon and abstraction in finance means investors struggle to understand what they own (like S&P 500 components), leading to weak emotional connection and panic selling during downturns. Creating ownership that connects people to brands they know transforms their relationship with investing by establishing emotional endowment effects.”

The Psychology of Investing w/ BlackRock’s Emily Haisley (RWH069)

Emily Haisley

“…e studied Kahneman and Tversky and all of these other great behavioral economists but give us a sense of what the kind of biases are that you're seeing how it shows up in the in the evidence that you're looking at and then what kind of interventions you can ac”

The Psychology of Investing w/ BlackRock’s Emily Haisley (RWH069)

Emily Haisley

“…cess, how aligned do we think that investment process is to behavioral best practice, um, what are the pain points in that investment process, you know, and with every process, even if it's a really, really strong process, there's always something you could do”

Richer, Wiser, Happier Q4 2024 | The Investor's Paradox w/ Stig Brodersen & William Green (TIP676)

Stig Brodersen

“…on if I remember rightly from caraman or one of those great behavioral psychologists so one of the things that I said to Annie is yeah but I have this fiveyear rule where if I buy something whether it's a stock or a fund I'm not allowed to sell it for five yea”

Sam Hartzmark: The Dividend Mistake Most Investors Still Make

Samuel Hartzmark

“…ing prices and often probably suffering the most from these biases cuz there's so much unsophisticated investor attention to them. A lot of money sloshing around that can, yeah, push things around in these markets that are getting a lot bigger, but still aren'”

Current Market Conditions & Poor Charlie's Almanack w/ Stig Brodersen & Clay Finck (TIP684)

Stig Brodersen

“…chology of human misjudgment it highlights 25 psychological biases that we can all unknowingly fall pray to so for example the fourth one he lists is the doubt avoidance tendency and it explains how our brains are programmed to quickly remove doubt and quickly”

Sam Hartzmark: The Dividend Mistake Most Investors Still Make

Samuel Hartzmark

“…cash payout. So it's like in that case then we're in weird behavioral world of like you don't understand, you know, the base economics, you don't understand that the price drops by the amount of the dividend. But it's totally fine for let's say you're an inve”

Most Investors Destroy Their Wealth

Charles Ellis

“…gain. There's a field of economics that I find fascinating, behavioral economics, where it serious-minded economists in years gone by used to believe that all individuals act rationally in their own best interest. And people in behavioral economics say, "Well,”

Mastering the Capital Cycle | Capital Returns by Edward Chancellor (TIP729)

Clay Finck

“…esting in HG. The other big lesson was overcoming a host of behavioral biases such as the anchoring bias, commitment and consistency bias, and status quo bias. Had he exited thinking he was a genius for locking in a profit, then he might not have been open-min”