Hope That Hurts the Wallet
Optimism sells. Self-help books, keynote stages and social feeds all tell us to expect the best. It feels good, and in small doses it helps us get out of bed. The problem is that when optimism stops being a mood and becomes a forecast, it can be expensive.
A new study from the University of Bath says excessive optimism is linked to lower cognitive skills and to worse financial decisions. Specifically, people with high cognitive ability tend to be more realistic and even pessimistic in their future expectations, while those with lower cognitive ability lean toward excessive optimism. That optimistic bias shows up as risky financial behavior, inadequate savings and poor choices, especially where uncertainty is high.
The research, published in Personality and Social Psychology Bulletin, was led by Dr Chris Dawson at the University’s School of Management. It’s not a moral judgement about positive thinking. It’s a measurement problem: plans based on overly optimistic beliefs make for poor decisions and are bound to deliver worse outcomes than realistic beliefs would.
The Bath Study and 36,000 Households
The paper is “Looking on the (B)right Side of Life: Cognitive Ability and Miscalibrated Financial Expectations.” Dawson used data from a UK survey of over 36,000 households and tracked people’s expectations of their financial well-being against their actual financial outcomes year by year for a decade.
Unrealistic optimism was operationalized as the gap between a person’s financial expectation and the financial realization that follows, measured annually over ten years. All else being equal, those highest on cognitive ability experience a 22% increase in the probability of realism and a 35% decrease in the probability of extreme optimism compared with those lowest on cognitive ability. The abstract reports a 22% (53.2%) increase in the probability of realism and a 34.8% reduction in optimism for the highest versus lowest cognitive groups.
That’s a large, nationally representative sample. The effect isn’t about a few anecdotes. It’s a pattern across employment decisions, investments, savings and any choice involving risk and uncertainty.
Cognition, Bias and Self-Flattery
Forecasting the future with accuracy is difficult, and low cognitive ability is expected to produce more errors in judgement, both pessimistic and optimistic. The results point in one direction: low cognitive ability leads to more self-flattering biases. People essentially delude themselves to a degree.
Excessive optimism is associated with lower cognitive skills such as verbal fluency, fluid reasoning, numerical reasoning and memory. Those with higher cognitive ability are better at balancing optimism with realism when it comes to important decisions.
Dawson puts it plainly: while humans may be primed by evolution to expect the best, those high on cognitive ability are more able to override this automatic response when it comes to important decisions. We’re wired for a quick positive default. Some people can step back from it. Others don’t.
The finding doesn’t mean smart people are miserable. It means they’re more likely to calibrate. They see the downside without needing to live there.
Financial Traps of Unrealistic Expectations
Where does this matter most? Money.
Unrealistically optimistic financial expectations can lead to excessive levels of consumption and debt, as well as insufficient savings. It can also lead to excessive business entries and subsequent failures.
The chances of starting a successful business are tiny, but optimists always think they have a shot and will start businesses destined to fail. That’s not a character flaw. It’s a miscalibration that repeats at scale.
Decisions on major financial issues such as employment, investments or savings, and any choice involving risk and uncertainty, were particularly prone to this effect and posed serious implications for individuals. When expectation outruns reality for years, the gap compounds: less saved, more borrowed, and a portfolio of bets that looks heroic on paper and painful in practice.
It’s tempting to read this as “be pessimistic.” It isn’t. It’s about trimming the excess. Realism is not gloom. It’s a willingness to hold two ideas at once: you can want something and still price the risk.
Evolution Meets Spreadsheet
“Unrealistic optimism is one of the most pervasive human traits and research has shown people consistently underestimate the negative and accentuate the positive,” Dawson notes. The concept of positive thinking is almost unquestioningly embedded in our culture — and it would be healthy to revisit that belief.
The problem with being programmed to think positively is that it can adversely affect our quality of decision-making, particularly when we have to make serious decisions. We need to be able to override that and this research shows that people with high cognitive ability manage this better than those with low cognitive ability.
That override is effortful. It requires verbal fluency to articulate scenarios, numerical reasoning to run them, fluid reasoning to update them as evidence arrives, and memory to keep track of past misses. When those skills are lower, the automatic positivity wins more often.
I’ve seen the same pattern in clinics and in advisory work. Clients who tell me “it’ll work out” without a plan are usually the ones revisiting the same crisis later. The ones who survive volatility are not the most hopeful. They’re the most honest about what could go wrong and still act.
The study doesn’t ask us to kill optimism. It asks us to earn it. Hope is useful when it’s priced. Otherwise it’s just a story we tell ourselves until the bill arrives.
Source: Neuroscience News coverage of University of Bath research. https://neurosciencenews.com/optimism-cognition-decision-making-25307/
