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Usability Test Script

A usability test script is a document that guides moderators through a usability testing session by defining tasks, questions, instructions, and observations to collect.

Official definition
ISTQB Official Glossary Definition
A document specifying a sequence of actions for the execution of a usability test. It is used by the moderator to keep track of briefing and pre-session interview questions, usability test tasks, and post-session interview questions.

(Definition reproduced from the ISTQB Glossary. Copyright belongs to ISTQB.)

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What is Usability Test Script?

A consistent script helps ensure each participant experiences similar conditions while allowing meaningful comparison of results.

Structured guidance: Standardizes usability sessions.

Consistent execution: Reduces moderator bias.

Task focused: Defines realistic user activities.

Real World Example

A government benefits portal is adding an online application form used by people with different devices, abilities, and assistive technologies.

The feature can pass functional tests while still blocking users who rely on keyboard navigation, screen readers, captions, or sufficient color contrast. Usability test script keeps that risk visible.

The tester checks the application path with assistive technology expectations in mind, including labels, focus order, error messages, and completion without a mouse.

The team releases a service that more citizens can actually use because Usability test script is treated as a product quality concern, not a cosmetic review.

Practice Questions

Question 1

Which statement BEST describes Usability test script in the context of ISTQB terminology?

Question 2

A tester needs to explain Usability test script to a non‑technical stakeholder. Which approach is MOST appropriate?

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