VELLORA USABILITY OBSERVATION SHEET — 2026-10-12
Blank template, no participant data. Use one row per event; duplicate as needed.
BEFORE THE SESSION
Session code / task ID / prototype or product version:
Starting state and test data:
Observable success condition:
Consent and recording arrangements:
Observer / moderator:
DURING EACH ATTEMPT
Elapsed time:
Event type: action / participant words / system response / assistance / interruption
Exact words or directly observed action (label paraphrases):
System state and relevant delay:
Assistance given and by whom:
Evidence relating to success condition:
Task outcome: completed unaided / completed with assistance / not completed / not assessable
AFTER THE ATTEMPT
Participant explanation:
Observer interpretation (separate from the observation):
Alternative explanation:
Follow-up question / source location / owner:
Time is relative to your defined start. Mark interruptions and system waiting; do not silently remove them.
A failed prototype is not automatically participant failure. Never infer emotion from a pause alone.
Use participant codes; keep identifying and payment details elsewhere. Respect actual consent and retention.
Import outside text as plain text in spreadsheet software to avoid formula interpretation. The CSV contains only headers and a blank row.
https://vellorastudies.com/templates/usability-observation-sheet/