Skip to content
BTFA Explore a pilot
BLOG · 12 MIN READ

Cognitive bias in decision-making under pressure

Biases are the brain's prediction shortcuts, and pressure makes leaders lean on them harder: here is what that looks like in a leadership team, and how to design decisions that catch it.

David BovisDavid BovisCREATOR OF BTFA · MASTERS IN APPLIED NEUROSCIENCE
REVIEWED BY LEVENT TURK · UPDATED NOVEMBER 2026
KEY TAKEAWAYS
  • Cognitive biases are shortcuts the brain uses to predict and decide quickly. They are usually useful, which is exactly why they are hard to spot.
  • Pressure, stress and lack of sleep tend to push people towards faster, more habitual judgement, so the shortcuts carry more of the load just when the stakes rise.
  • Knowing the names of biases does little on its own. People readily see bias in others and rarely in themselves.
  • What helps is process: pre-mortems, arguing the opposite, thinking alone before discussing together, exit criteria set in advance, and a room where dissent is safe.
  • In BTFA™ terms, a bias is a belief deciding the interpretation before the evidence has had a fair hearing.

What is cognitive bias in decision-making?

Cognitive bias in decision-making is a systematic tendency to judge or choose in a way that departs from what the evidence alone would support. Biases come from mental shortcuts the brain uses to decide quickly. Most of the time they serve us well, which is why they are hard to see, and why they matter most under pressure.

The modern study of bias began with Amos Tversky and Daniel Kahneman's 1974 work on the shortcuts people use when judging under uncertainty, such as anchoring on a first number or judging likelihood by how easily examples come to mind 1.

For a leadership team, the useful question is not whether bias is present. It always is. The question is whether the way you make decisions catches it before it becomes a commitment.

Biases are the brain's prediction shortcuts

Neuroscientists increasingly describe the brain as a prediction engine: it matches what is happening now to models built from past experience, so it can act quickly without starting from scratch every time 24. Those shortcuts are efficient. They are also where bias comes from.

In BTFA we call those predictive models beliefs. A bias, in our model, is what happens when a belief settles the interpretation before the evidence has had a fair hearing. The leader who "knows" a supplier is unreliable reads a late delivery as proof. The same delay from a trusted supplier is read as bad luck.

You will often hear "unconscious bias at work" used about how we judge people, for example in hiring and promotion. That matters, and it draws on the same machinery. This article focuses on the biases that distort business decisions: what to fund, when to stop, whom to believe and what to expect.

Why pressure makes bias more likely

Here it is worth being precise about what the research does and does not show.

Acute, uncontrollable stress impairs the prefrontal cortex, the part of the brain most involved in deliberate, flexible reasoning 12. Experiments also show that stress shifts people from goal-directed choices towards habitual ones 13. A review of decision-making under stress concluded that stress tends to reduce careful, deliberative strategies, although the effects depend on the task and the person 14. Sleep loss particularly harms decisions that need flexible thinking and updating a plan when new information arrives 15.

What the research does not show is that stress switches on every bias, or by a predictable amount. Our reading of it is more modest: under pressure, the brain leans harder on what it already expects. That is when the shortcuts below do the most damage.

“Pressure doesn't create new biases. It takes away the time and the headroom we would normally use to catch the old ones.”

Eight cognitive biases that matter most in leadership teams

There are dozens of named types of cognitive bias. These eight are the ones we see shaping leadership decisions most often.

Confirmation bias. We look for, notice and remember evidence that supports what we already believe 2. A director convinced that a new site is underperforming asks for the figures that prove it, and nobody asks for the ones that don't.

Sunk cost and escalation of commitment. Money and effort already spent make us more likely to keep going 4. In Staw's classic study, people who were personally responsible for a failing decision committed more resources to it than those who were not 3. The ERP programme that "we can't stop now" is the familiar example.

Overconfidence and the planning fallacy. People underestimate how long their own tasks will take, even when they know similar tasks have overrun before 5. Managers also tend to take an "inside view" of their project, ignoring how comparable projects actually turned out 6.

Availability. We judge how likely something is by how easily examples come to mind 1. One vivid customer complaint at the board can outweigh a quarter of quiet data.

Anchoring. The first number on the table pulls later estimates towards it, even when it is arbitrary 1. Whoever speaks first in a budget meeting often sets the range for everyone else.

Shared-information bias and groupthink. Groups spend most of their time discussing what everyone already knows, and the information only one person holds is often never raised 7. A meta-analysis of twenty-five years of these "hidden profile" studies found the same pattern 8. Groupthink, Irving Janis's term for cohesive groups suppressing dissent, is widely used, though the research support for the full model is mixed 9.

Status quo bias. People prefer the current option simply because it is current 10. Restructures, product exits and supplier changes are judged against an "as is" that is rarely held to the same standard.

Fundamental attribution error. We explain other people's behaviour by their character and underweight the situation they are in 11. A missed target becomes "a capability issue" rather than a question about conflicting priorities.

BIASWHAT IT LOOKS LIKE IN A LEADERSHIP TEAMA COUNTER-MOVE
Confirmation biasData is requested to support a view already heldAsk someone to make the strongest case for the opposite
Sunk cost / escalation"We've come too far to stop"Agree exit criteria before the work starts
Overconfidence / planning fallacyEvery timeline is the best caseCompare with how similar projects actually went
AvailabilityOne vivid incident drives policyAsk what the full data says before deciding
AnchoringThe first figure spoken sets the rangeCollect estimates independently before discussion
Shared-information bias / groupthinkMeetings rehearse what everyone knowsAsk each person what they know that others may not
Status quo biasThe current way is never costedJudge "keep as is" as an option with its own risks
Fundamental attribution errorShortfalls are blamed on peopleAsk what in the situation made this likely

Why knowing about biases rarely removes them

Most leaders have read a list like the one above. It rarely changes much in the room, for two reasons.

First, people see bias far more easily in others than in themselves. Researchers call this the bias blind spot 16. The colleague anchoring on last year's number is obvious. Our own anchor feels like judgement.

Second, intention is not a method. In one well-known set of experiments, asking people to be fair and unbiased did little to reduce biased reasoning, while asking them to consider the opposite did reduce it 17. More recent work shows that well-designed training can reduce some specific biases 18, but a slide on bias at the start of a strategy day is not that.

This is why, in our view, bias is best treated as a property of how decisions are made, not only as a flaw in the people making them. You can't rely on a tired brain to catch itself. You can design meetings that catch it for you.

How bias runs through the BTFA chain

BTFA describes behaviour as the end of a chain: Believe, Think, Feel, Act. Bias sits at the very start of it. Take a leadership team reviewing a project that is three months late.

  • Believe: "This project is strategically essential, and the team leading it is strong." The prediction is set before the review begins.
  • Think: The delay is interpreted as a temporary setback. Evidence that fits is noticed; evidence that doesn't is explained away.
  • Feel: Admitting the plan is failing feels like a loss of face, so the room tightens. Under that pressure, careful weighing becomes harder.
  • Act: More budget is approved, the timeline is reset, and the next review starts from a higher sunk cost.

Every step looked reasonable from the inside. That is the point. If you want a different decision, working on the final act ("be more objective") will not reach it. You have to change the conditions upstream: what the team is invited to question, and how safe it is to say "I think we should stop". There is more on the full model on our BTFA model page.

What to do differently

None of these steps needs special software. Each one changes the process, so the decision depends less on any one person's shortcuts.

  1. 01Run a pre-mortem. Before committing, imagine it is a year from now and the decision has failed, then ask everyone to write down why. Gary Klein popularised this for project teams 19. It builds on research showing that imagining an outcome has already happened helps people generate more explanations for it 20.
  2. 02Assign the opposite case. Ask one person to make the strongest honest argument against the preferred option. "Consider the opposite" is one of the few debiasing moves with direct experimental support 17.
  3. 03Think alone, then discuss together. Collect ideas, estimates and concerns individually before the conversation starts. Interactive brainstorming groups tend to produce fewer ideas than the same people working separately 21, and independent input brings unshared information to the surface 7 and stops the first number becoming the anchor.
  4. 04Set exit criteria at the start. Agree in advance what result, by what date, would make you stop or rethink. It is much easier to decide that before anyone is personally invested 3.
  5. 05Make dissent safe, and speak last. Psychological safety, the shared belief that it is safe to take interpersonal risks, is linked to teams raising problems and learning from them 22. People hold well-learned rules about when not to speak up 23. If the most senior person gives their view first, those rules usually win. See why good teams stop raising problems for more on this.
EXECUTIVE COACHINGDecide well when it matters mostExecutive coaching

The leadership question underneath

Bias will never be removed from a leadership team, because it comes from the same machinery that makes fast judgement possible. What you can change is how much any one prediction is allowed to decide alone.

That starts with the leader's own state. When you are under pressure, your reactions become the conditions everyone else decides in. A team that watches its leader welcome bad news will bring the next piece of it earlier. If you are working on how your team handles change more widely, our articles on the neuroscience of change and resistance to change take this further.

Questions

What are the most common cognitive biases in decision-making?

Among the best studied are confirmation bias, anchoring, availability, overconfidence and the planning fallacy, sunk cost and escalation of commitment, status quo bias, and the tendency of groups to discuss shared rather than unique information. In leadership teams these often combine, for example when an early estimate anchors a plan that later becomes too costly to abandon.

How does stress affect decision-making?

Acute stress impairs the prefrontal cortex, which supports deliberate, flexible reasoning, and research shows it tends to shift people towards habitual and less deliberative choices. The size of the effect varies with the task and the person. Lack of sleep has similar effects on decisions that need flexible thinking. Good process matters most when pressure is highest.

Can you train yourself out of cognitive bias?

Not completely. Simply knowing about biases, or trying hard to be objective, has limited effect, partly because people see bias more easily in others than in themselves. Some structured training has reduced specific biases in studies. For leadership teams, the more reliable route is process: pre-mortems, considering the opposite and collecting views independently before discussion.

What is the difference between unconscious bias and cognitive bias?

Cognitive bias is the broad term for systematic shortcuts in judgement, such as anchoring or confirmation bias. Unconscious bias at work usually refers to the subset that affects how we judge people, for example in hiring, promotion or whose ideas get heard. Both draw on the same tendency of the brain to predict from past experience.

Sources

  1. Tversky, A. & Kahneman, D. (1974). Judgment under uncertainty: heuristics and biases. Science, 185(4157), 1124–1131.https://doi.org/10.1126/science.185.4157.1124
  2. Nickerson, R. S. (1998). Confirmation bias: a ubiquitous phenomenon in many guises. Review of General Psychology, 2(2), 175–220.https://doi.org/10.1037/1089-2680.2.2.175
  3. Staw, B. M. (1976). Knee-deep in the big muddy: a study of escalating commitment to a chosen course of action. Organizational Behavior and Human Performance, 16(1), 27–44.https://doi.org/10.1016/0030-5073(76)90005-2
  4. Arkes, H. R. & Blumer, C. (1985). The psychology of sunk cost. Organizational Behavior and Human Decision Processes, 35(1), 124–140.https://doi.org/10.1016/0749-5978(85)90049-4
  5. Buehler, R., Griffin, D. & Ross, M. (1994). Exploring the "planning fallacy": why people underestimate their task completion times. Journal of Personality and Social Psychology, 67(3), 366–381.https://doi.org/10.1037/0022-3514.67.3.366
  6. Kahneman, D. & Lovallo, D. (1993). Timid choices and bold forecasts: a cognitive perspective on risk taking. Management Science, 39(1), 17–31.https://doi.org/10.1287/mnsc.39.1.17
  7. Stasser, G. & Titus, W. (1985). Pooling of unshared information in group decision making: biased information sampling during discussion. Journal of Personality and Social Psychology, 48(6), 1467–1478.https://doi.org/10.1037/0022-3514.48.6.1467
  8. Lu, L., Yuan, Y. C. & McLeod, P. L. (2012). Twenty-five years of hidden profiles in group decision making. Personality and Social Psychology Review, 16(1), 54–75.https://doi.org/10.1177/1088868311417243
  9. Esser, J. K. (1998). Alive and well after 25 years: a review of groupthink research. Organizational Behavior and Human Decision Processes, 73(2–3), 116–141.https://doi.org/10.1006/obhd.1998.2758
  10. Samuelson, W. & Zeckhauser, R. (1988). Status quo bias in decision making. Journal of Risk and Uncertainty, 1, 7–59.https://doi.org/10.1007/BF00055564
  11. Ross, L. (1977). The intuitive psychologist and his shortcomings: distortions in the attribution process. Advances in Experimental Social Psychology, 10, 173–220.https://doi.org/10.1016/S0065-2601(08)60357-3
  12. Arnsten, A. F. T. (2009). Stress signalling pathways that impair prefrontal cortex structure and function. Nature Reviews Neuroscience, 10, 410–422.https://doi.org/10.1038/nrn2648
  13. Schwabe, L. & Wolf, O. T. (2009). Stress prompts habit behavior in humans. Journal of Neuroscience, 29(22), 7191–7198.https://doi.org/10.1523/JNEUROSCI.0979-09.2009
  14. Starcke, K. & Brand, M. (2012). Decision making under stress: a selective review. Neuroscience & Biobehavioral Reviews, 36(4), 1228–1248.https://doi.org/10.1016/j.neubiorev.2012.02.003
  15. Harrison, Y. & Horne, J. A. (2000). The impact of sleep deprivation on decision making: a review. Journal of Experimental Psychology: Applied, 6(3), 236–249.https://doi.org/10.1037/1076-898X.6.3.236
  16. Pronin, E., Lin, D. Y. & Ross, L. (2002). The bias blind spot: perceptions of bias in self versus others. Personality and Social Psychology Bulletin, 28(3), 369–381.https://doi.org/10.1177/0146167202286008
  17. Lord, C. G., Lepper, M. R. & Preston, E. (1984). Considering the opposite: a corrective strategy for social judgment. Journal of Personality and Social Psychology, 47(6), 1231–1243.https://doi.org/10.1037/0022-3514.47.6.1231
  18. Morewedge, C. K., Yoon, H., Scopelliti, I., Symborski, C. W., Korris, J. H. & Kassam, K. S. (2015). Debiasing decisions. Policy Insights from the Behavioral and Brain Sciences, 2(1), 129–140.https://doi.org/10.1177/2372732215600886
  19. Klein, G. (2007). Performing a project premortem. Harvard Business Review, September 2007.https://hbr.org/2007/09/performing-a-project-premortem
  20. Mitchell, D. J., Russo, J. E. & Pennington, N. (1989). Back to the future: temporal perspective in the explanation of events. Journal of Behavioral Decision Making, 2(1), 25–38.https://doi.org/10.1002/bdm.3960020103
  21. Diehl, M. & Stroebe, W. (1987). Productivity loss in brainstorming groups: toward the solution of a riddle. Journal of Personality and Social Psychology, 53(3), 497–509.https://doi.org/10.1037/0022-3514.53.3.497
  22. Edmondson, A. (1999). Psychological safety and learning behavior in work teams. Administrative Science Quarterly, 44(2), 350–383.https://doi.org/10.2307/2666999
  23. Detert, J. R. & Edmondson, A. C. (2011). Implicit voice theories: taken-for-granted rules of self-censorship at work. Academy of Management Journal, 54(3), 461–488.https://doi.org/10.5465/amj.2011.61967925
  24. Clark, A. (2013). Whatever next? Predictive brains, situated agents, and the future of cognitive science. Behavioral and Brain Sciences, 36(3), 181–204.https://doi.org/10.1017/S0140525X12000477
David Bovis
ABOUT THE AUTHOR
David Bovis

Creator of BTFA. Time-served precision engineer with 30+ years in WCM and Lean change across Europe, and a Masters in Applied Neuroscience.

More from David →
KEEP READING

Decide well when it matters most

Explore a pilot