Choose the format
- Image: shown inline and available full screen.
- Video: shown in a player with controls, or as a muted loop when controls are disabled.
- PDF: shown as a page carousel, which works well for multi-page concepts.
Describe it for the interviewer
The interviewer receives the stimulus description, not the visual file. Describe what appears on screen and any distinctions it may need to discuss. For a packaging comparison, identify each option by a visible feature so the interviewer understands phrases such as “the blue one.” For multilingual studies, each language can use a translated stimulus file. See Languages and translation.Testing your study
Check the stimulus in the participant experience.