# Usability heuristic review: original decision worksheet

Attribution: Jon Bishop. CC BY 4.0. Framework source: https://www.nngroup.com/articles/ten-usability-heuristics/

This is an original worksheet, not a copy of the source artifact.

## Decision

What decision must this exercise inform? Who owns it? What evidence would change it?

## Inputs

Walk one task and note system feedback, language, control, consistency, errors, recognition and recovery.

For each input, record: observation | source | date | affected population | confidence | unresolved question.

## Application

1. Define one concrete decision and comparison period.
2. Record evidence separately from estimates.
3. Apply the method and inspect the assumptions that drive the result.
4. State the next observation or test and its decision rule.

## Worked example — fictional

Fictional: a signup validation message says invalid input without explaining the format. Record that concrete recovery problem and test the revised wording.

## Limits

Reviewer judgments identify potential problems; they do not measure user success or conversion effects.

## Output

Decision: ___
Evidence supporting it: ___
Contradictory or missing evidence: ___
Next action and owner: ___
Revisit when: ___