Feedback Design

Feedback is how software communicates with users. Good feedback creates anticipation, confirms actions, and guides recovery.

Evidence Tiers

[Research]   — Peer-reviewed studies, controlled experiments
[Expert]     — Nielsen Norman Group, recognized UX authorities
[Case Study] — Documented examples from major products
[Convention] — Industry practice, limited formal validation

Multiple tags = stronger evidence: [Research][Expert]
Mixed findings noted as: [Research — Mixed]

Response Time Thresholds