What changes

Field-specific error copy is associated with a 15–28% relative improvement in users successfully fixing and resubmitting forms.

When this tends to work

• Conditions similar to: Account creation and payment forms, English UI, 2022–2025
• You can measure Successful form resubmission rate reliably
• The intervention is implemented consistently, not half-measured

When to be careful

• Your audience or product differs materially from the cited context
• Compliance costs or second-order effects outweigh the lift
• Evidence label is study—treat wide ranges as planning bands, not promises

Practical takeaway

Use the cited range for prioritization and test design. Verify against your own data before scaling.