Method evergreen supported Updated Aug 06, 2026

Decision journaling

A method for recording expectations, assumptions, confidence, risk, and revision conditions before the outcome is known.

#method #decisions #reflection

Before acting

Before an important decision, record:

What is being decided.
What is currently known.
Which assumptions the choice depends on.
Expected outcomes and confidence.
Risks and who carries them.
What would trigger stopping, continuing, or revising.

Return after reality has responded. Compare the record with what happened without rewriting the earlier position to appear wiser.

After reality responds

Do not ask only whether the outcome was good. Compare what happened with the assumptions, confidence, risks, and revision conditions recorded before the outcome was known.

The practice supports Decisions and outcomes are different and What would change our mind?. It becomes more useful when paired with Mapping assumptions.

Current position: Supported, low confidence
Basis: research synthesis
Scope: Using pre-outcome records as a practical aid for later reflection on decisions under uncertainty. Direct evidence for this exact journaling method is limited.
Last reviewed: Aug 08, 2026
Review by: Aug 08, 2027
Research links: 1 evidence link · 0 counterpoints

Evidence & sources

Source Outcome bias in decision evaluation
Five studies showing that knowledge of an outcome can change how people evaluate the quality of a prior decision even when the decision maker had the same information at the time.

Counterpoints

No explicit counterpoint is attached yet. Absence of a counterpoint is not evidence of consensus.

BOUNDARY CONDITIONS

The attached evidence establishes outcome bias, not that decision journals themselves reliably improve decisions.
Poorly designed records can create bureaucracy, hindsight theater, or false precision.

POSSIBILITIES

Recording assumptions and confidence before outcomes may reduce retrospective rewriting and make learning reviews more honest.

WHAT WOULD CHANGE OUR MIND?

Direct experimental evidence showing that decision journaling does not improve calibration, reflection, or learning and instead adds material decision cost.