Checklist

A structured list of considerations the user must address before accepting system output, forcing systematic review rather than gestalt acceptance.

Mechanism

Before the user can accept a system recommendation, the interface presents a set of review items — common failure modes to check, alternative explanations to consider, or domain-specific criteria to verify. The user must engage with each item (checking a box, selecting a status, or answering a question) before the accept action becomes available.

Unlike timing-based forcing functions, the checklist targets process completeness: it doesn’t just delay the decision, it structures what the user should think about during the delay.

When it works

• The domain has known failure modes or common oversights that a checklist can enumerate
• The checklist items are genuinely informative — they direct attention to things the user might miss, not things they already considered
• The items are specific enough to guide action (“Did you check whether the patient is on contraindicated medication?”) rather than generic (“Are you sure?”)
• Compliance or safety contexts where process documentation matters

When it doesn’t

• When the checklist items are too generic to guide real thinking — “Have you reviewed the output?” produces checkbox-clicking, not analysis
• When the list is too long for the decision’s stakes — checklist fatigue is real
• When the failure modes are too varied or unpredictable to enumerate in advance
• When the user lacks the competence to evaluate the checklist items — the pattern becomes ritual rather than review

Design considerations

• Domain-specific items. Generic checklists don’t work. Each checklist should be tuned to the specific decision type and its known failure modes.
• Adaptive checklists. Consider surfacing different items based on the system’s confidence, the type of recommendation, or the user’s track record. A system that’s uncertain about a particular factor can highlight that factor in the checklist.
• Completion gating. The forcing effect depends on the checklist being required, not optional. But required checklists create compliance pressure — monitor for rote completion.
• Distinguish from confirmation dialogs. A confirmation dialog (“Are you sure?”) is not a checklist. The value of the checklist is in its structured, specific items, not in the act of clicking “confirm.”

Resources & references

• Gawande, A. (2009). The Checklist Manifesto: How to Get Things Right.
• Noessel, C. (2026). Designing Assistant Technology, ch. 12.
• Buçinca, Z., Malaya, M. B., & Gajos, K. Z. (2021). To trust or to think. CSCW.