Decision Hygiene
Structure evidence first and delay intuition until the final judgment
- Difficulty
- Moderate
- Time to result
- ~weeks to results
- Steps
- 6
- Confidence
- 97%
Decision Hygiene is a family of preventive procedures that improves judgments without requiring decision-makers to identify every bias in advance. Like handwashing, it removes unknown contaminants rather than treating one known disease. For option selection, the mechanism is to generate credible alternatives, divide evaluation into relevant dimensions, examine each dimension factually, and assemble a comparable evidence profile. Decision-makers postpone their overall impression until this structured work is complete. When a group is involved, members initially assess the evidence independently so that hierarchy and early opinions do not erase information. Intuition remains part of the final decision, but it operates after systematic evidence collection rather than controlling what evidence gets noticed. The method can therefore reduce both inconsistent judgments and predictable cognitive distortions.
Origin
Extracted from Masters in Business, where Kahneman explained procedures developed with Olivier Sibony and Cass Sunstein for their book Noise.
Core principles
- 01Prevent errors without needing to predict every specific bias.
- 02Evaluate options through consistent dimensions.
- 03Accumulate facts before forming a holistic impression.
- 04Keep initial assessments independent where possible.
- 05Use intuition late rather than eliminating it.
How to run it
- 1
Generate Real Options
Create the best feasible set of alternatives before beginning evaluation. Avoid treating the first acceptable idea as the decision.
Pro tip Include meaningfully different options rather than superficial variations of one proposal.
Watch out A rigorous evaluation cannot rescue a weak or artificially narrow option set.
- 2
Define Evaluation Dimensions
Break the decision into distinct characteristics that determine success. Specify what evidence matters for each characteristic.
Pro tip Choose dimensions before learning which option performs best on them.
Watch out Changing criteria midstream can rationalize a preferred conclusion.
- 3
Assess the Facts
Evaluate every option against each dimension using comparable, relevant information. Keep observations separate from overall impressions.
Pro tip Use common questions or score anchors across all options.
Watch out Do not let one striking strength or weakness dominate unrelated dimensions.
- 4
Create Option Profiles
Assemble the dimensional assessments into a clear profile for each alternative. Preserve trade-offs rather than collapsing everything too early.
Pro tip Display profiles side by side to expose missing evidence and inconsistent standards.
Watch out A single premature total score can hide why evaluators disagree.
- 5
Invoke Intuition Late
Only after reviewing the complete profiles should decision-makers form an overall judgment. Intuition now integrates structured evidence instead of filtering it prematurely.
Pro tip Record the intuitive conclusion separately from the dimensional evidence.
Watch out Delaying intuition does not mean ignoring experienced judgment altogether.
- 6
Aggregate Before Discussing
When several people are involved, collect independent conclusions first, combine them, and then discuss the aggregate and important disagreements.
Pro tip Have senior leaders speak after others have recorded their views.
Watch out If the CEO speaks first, subsequent agreement may contain almost no independent information.
In the wild
A leadership team compares acquiring a competitor, forming a partnership, and building internally. Before debating, it rates each option independently on cost, speed, strategic control, execution risk, and customer access. The profiles expose different trade-offs, after which members record overall judgments and discuss the aggregated result.
→ The team chooses with clearer evidence and less anchoring on the CEO's initial preference.
Kahneman proposes treating strategic options as organizations should treat job candidates: break each option into aspects, assess those aspects factually, create a complete profile, and invoke intuition only afterward.
→ Intuition becomes an evidence-informed final integrator rather than the starting point for confirmation bias.
Common mistakes
Starting with a Gut Verdict
An early overall impression shapes subsequent evidence gathering and encourages people to explain rather than test their preference.
Discussing Before Independent Assessment
Early conversation correlates judgments, amplifies status effects, and destroys useful independent information.
Trying to Eliminate Intuition
The framework delays intuition; it does not claim that structured evidence can replace all experienced judgment.
Is it for you?
Best for
It is best for consequential decisions involving several plausible options and multiple dimensions of evidence.
Not ideal for
It is not ideal for emergencies requiring immediate action or routine choices whose structuring cost exceeds their consequences.
From the transcript
“When you wash your hands, you don't know what germs you're killing, and if you're successful, you'll never know.”
“options are like candidates.”
“a key principle of decision hygiene is not to avoid intuition altogether, but to delay it”
From the episode
Daniel Kahneman on Behavioral Economics (Podcast)
Daniel Kahneman