Judge decisions by the process, not the result
A good decision that produces a bad outcome is still a good decision.
Key takeaways
- What it is: A good decision that produces a bad outcome is still a good decision.
- Why it works: Outcome bias — judging decision quality by what happened rather than by what was known before the decision — is pervasive and damaging. It causes people to reverse correct processes that got unlucky and to repeat incorrect processes that happened to succeed. Expected value thinking separates these: a decision is good if it correctly used available information to maximize expected payoff, regardless of which outcome the probability dice rolled.
- Evidence: Backed by randomized trials / meta-analyses.
- Avoid: Feeling retrospectively foolish about a correct decision that went badly, and adjusting future decisions toward "safer" options that lower expected value to reduce regret.
Why it works
Outcome bias — judging decision quality by what happened rather than by what was known before the decision — is pervasive and damaging. It causes people to reverse correct processes that got unlucky and to repeat incorrect processes that happened to succeed. Expected value thinking separates these: a decision is good if it correctly used available information to maximize expected payoff, regardless of which outcome the probability dice rolled.
How to do it
- 1After any significant outcome, separately evaluate: (1) what was known at decision time, (2) whether the process used that information well, and (3) what the outcome was.
- 2Resist the urge to infer decision quality from outcome quality alone.
- 3Keep a decision journal: record your reasoning before the outcome, so you can compare process to result honestly later.
- 4Ask: "Given what I knew then, would I make the same decision again?" If yes, a bad outcome is a bad roll, not a bad decision.
What the evidence says
RCT / meta-analysisOutcome bias is well documented: people give lower evaluations to the same decision when it is paired with a bad outcome, even when the outcome was due to chance. Baron and Hershey (1988) provide the foundational experimental evidence.
Honest caveat: Distinguishing process from outcome is easy in principle and genuinely hard under social pressure; colleagues who judge by results may not share your framework.
- — Baron & Hershey (1988), outcome effects in decision evaluation, Journal of Personality and Social Psychology
Common mistake
Feeling retrospectively foolish about a correct decision that went badly, and adjusting future decisions toward "safer" options that lower expected value to reduce regret.
IX Coach keeps a record of your decision rationale so you can review it post-outcome — separating what you knew from what happened to prevent outcome bias from corrupting your decision process.
Practice this with IX Coach →