Once you add one or more quiz questions to a model or tour in Human Studio, you can use visibility modes to control how learners access your quiz—both in the app and in published experiences.

Visibility modes determine whether learners see the learning experience first, the quiz first (and only), or no quiz at all. 

About visibility modes

There are three visibility modes available for 3D quizzes:

Quiz Optional (default)

Learners can explore the 3D model or tour and choose when to take the quiz.

• The model or tour opens in its standard View mode.

• Learners can enter Quiz mode at any time by clicking a Take Quiz button.

• After completing the quiz, learners can return to View mode.

Warning: Quiz Optional mode is overridden if you publish with Assessment Mode enabled. See How visibility modes work with Assessment Mode below for details.

Quiz Only

Only the quiz is available to learners. 

• The model or tour opens directly in Quiz mode.
• Chapter content, the anatomy tree, and anatomy labels are hidden.
• Learners cannot access View mode (in other words, they cannot explore the model outside of quiz questions).

Use this mode when you want to separate learning and assessment. For example, you might use one model for instruction and a simplified version for quizzing—removing paint colors, labels, or structures that could reveal answers.

Quiz Disabled

Quiz questions are saved but hidden from learners.

• The model or tour opens in its standard View mode.

• Learners cannot access Quiz mode.

• Quiz questions remain available for editing in Studio.

Use this mode if you want to temporarily disable a quiz without deleting questions, or when you are still building a quiz.

How visibility modes work with Assessment Mode

When a model or tour contains a quiz, an option called Assessment Mode appears during publishing.

Assessment Mode is designed for graded or controlled assessments. When enabled, it modifies the learner experience to prevent behaviors like retaking quizzes to improve scores.

Tip: If you work with developers, see our Human Viewer API documentation to learn how to capture quiz results.

What happens when Assessment Mode is enabled depends on your quiz’s current visibility mode:

Quiz Only + Assessment Mode

If your quiz is set to Quiz Only and you publish in Assessment Mode:

• The Take Again button at the end of the quiz is removed.

This helps prevent repeated attempts to achieve a higher score.

Quiz Optional + Assessment Mode

If your quiz is set to Quiz Optional and you publish in Assessment Mode, this overrides the expected Quiz Optional behavior and treats the quiz as both Quiz Only and an Assessment:

• The model or tour loads directly in Quiz mode, and the learner cannot access View mode.
• The Back to View button at the end of the quiz is removed.
• The Take Again button at the end of the quiz is removed.

Summary: Visibility modes and Assessment Mode together

Assessment Mode only affects two parts of the learner experience:

• Whether learners can return to View mode
• Whether learners can retake the quiz

Use the tables below to understand how visibility modes behave inside the BioDigital Human app and when published.

Inside the BioDigital Human app

Published experience (outside the app)