Strella docs
GuidesDeveloper
Strella docs
GuidesDeveloper
Welcome to StrellaChangelog
Run your first studyHow AI helps you in StrellaGlossary
The Build screenStart with the study setup chatSet up your study detailsWrite research objectivesBuild your screenerBuild your question guideBest practicesAdd survey questions to your interviewAdd a stimulus to your interviewHost a prototype and add it to your interviewAdd a card sortAdd a tree testRandomize sections (A/B variants)Conditional sectionsVersion historyUse the build assistantPreview your interviewUpload an existing discussion guideImport from another study
How the AI moderator worksVoice, language & behaviorRecording modesCustom dictionary & pronunciationCustomize the participant experienceWhat the AI moderator can't do
How recruitment worksSchedule moderated interviewsHire from a participant panelBring your own participantsManage share links & redirectsPass data with URL parametersControl access & schedulingSet quotasApprove, reject & invitePay participants you recruitedReport a participantWatch the funnel
Publish your studyEdit a study after launch
Get oriented in ResultsBring in interviews you ran elsewhereReview a single interviewBrowse analysisCode responsesSee how participants complete on-screen tasksSee how participants sorted your cardsSee how participants use your Figma prototypeUse Strella's AI chatAI chat best practices
Build & share a reportCreate & share a highlight reel
Teammates, organizations & workspacesDelete projectsProject defaultsBilling & creditsConnect FigmaAPI, MCP & AI assistantsParticipant data accessMedia links and who can open themActivity logs
Step typesScreener question typesRecording settingsParticipant statuses & funnel stagesSupported languagesVoice optionsBrowser & device requirements
MCP serverConnect an AI clientTools & skills referenceUse cases & example promptsWhat's newSecurity & privacyFAQ & troubleshooting
Build a studyBuild your question guide
Build a study

Build your question guide

The question guide is the ordered set of steps the AI moderator runs through with each participant. Add steps from five groups: Ask, Survey, Structure, Usability, and Test.

The question guide is the script the AI moderator follows. It's an ordered list of steps. The AI runs them in order, asks dynamic follow-ups where you've enabled them, and skips conditional sections that don't apply.

Building a question guide in Build: the guide tree of sections and questions, with a section selected and its properties open.

Steps

  1. Open the interview region

    In Build, the question guide appears below the screener divider in the Guide panel.

  2. Add your first step

    Click + Add element to open the step menu. Steps are grouped into five categories:

    • Ask: Open question, Task, Statement.
    • Survey: Multiple choice, Ranking, Open text, Slider, Rating scale, Media upload, Matrix, NPS.
    • Structure: Section, Randomization (shown as Variant comparison in the editor).
    • Usability: Prototype (Figma), Website, Image, Video, Embed, Text.
    • Test: Card sort, Tree test.

    The most common step is Open question, a question the AI moderator will ask in your own words.

    Adding a step to the question guide: the Add element control opening the step menu below a section.

  3. Write the question

    In Properties, type the question text. Write it the way you'd say it aloud. By default the moderator paraphrases it conversationally rather than reading it word-for-word. Turn on Ask question verbatim (below) when the exact wording matters.

    To format what participants read on screen, use the buttons above the text box: bold, italic, underline, strikethrough, bulleted and numbered lists, a heading, a subheading, a quote, and links. Formatting works on questions, tasks, statements, and survey questions, but not on answer options, section titles, or media. The moderator still gets the words as one plain line, so a heading and its bullets are asked as part of the question.

    Optional fields depend on the step type:

    • Follow-up depth (on open questions): Off, Low, Medium, High (roughly 0, 1, 2, 3 follow-ups the moderator may ask).
    • Follow-up guidance (on open questions): tell the moderator what to probe ("dig into pricing objections").
    • Ask question verbatim: force the moderator to read the question word-for-word instead of paraphrasing.
    • Blur recording for privacy: blur the screen recording while just this item is active. Useful for moments when the participant enters personal or sensitive information.
  4. Add a task (when participants should do something)

    A Task is for when the participant needs to do something: walk through a prototype, visit a website, open a file. Where an open question asks the participant to talk, a Task asks them to do something while thinking aloud.

    Tasks pair naturally with a stimulus: drop a Figma prototype or other media into the same Section, and it stays visible the whole time. Task completion behavior (the moderator decides, a button click, or a verbal "done") is set globally in Task completion handling.

    Tasks do not support dynamic follow-ups. Add an open question after the task to explore the participant's experience.

  5. Add a statement (when you want to say something without asking)

    A Statement is the AI saying something to the participant: context for the next question, a transition, a thank-you. No response is collected. Statements are read aloud exactly as written.

    Common use: put a Statement as the first item to add your own framing right after the moderator's greeting, or as the last item for a thank-you in your own words right before the moderator's built-in closing.

  6. Organize with sections

    Add a Section to group related steps. Sections can be:

    • Conditional: only shown to participants who match a rule. See Conditional sections.
    • Limited to a percentage of participants: show this section to only N% of participants (sticky per participant).
    • Randomized: pick one of multiple paths at random per participant (see Randomization).

    Drag steps into a section to nest them.

  7. Reorder, duplicate, or remove

    Drag steps to reorder. Right-click for duplicate or delete.

What can go inside what

The builder enforces these containment rules and blocks invalid drops.

Building blockCan containCan live inside
SectionOpen questions, tasks, statements, survey questions, media blocks, Randomization blocksTop level of the guide only
Randomization blockVariant options onlyTop level, or a Section
Variant optionOpen questions, tasks, statements, survey questions, media blocksA Randomization block
Media blockOne piece of media, plus open questions, tasks, statements, and survey questions about itTop level, a Section, or a Variant option
Card sort (Test)Open questions, tasks, statements, and survey questions as follow-upsTop level, a Section, or a Variant option
Individual items(these are the content itself)Top level, a Section, a media block, a card sort, or a Variant option

Common rules people hit:

  • Sections can't nest. For sub-topics, use separate consecutive Sections. Participants never see section boundaries anyway.
  • Media blocks can't nest and hold exactly one piece of media. For a second piece of media, add a second media block.
  • Media blocks can't contain Sections or Randomization blocks: just questions, tasks, statements, and survey questions.
  • Only Variant options go inside a Randomization block.
  • A card sort holds follow-up questions but not media or another card sort. Its follow-ups are open questions, tasks, statements, and survey questions.
  • A tree test holds follow-up questions the same way. Its follow-ups are open questions, tasks, statements, and survey questions, asked while the outline stays on screen.

Best practices

A few rules keep responses genuine and the conversation natural. See Best practices for the full checklist.

  • Don't lead or load. "What problems do you have with X?" plants the answer. Ask "How do you feel about X?" and let the participant supply it.
  • Ask about what people did, not what they'd do. "Tell me about the last time you…" beats "Would you use a feature that…" because people predict their own behavior poorly. (Reactions to something they're looking at right now are fine.)
  • One thing per question. "What do you like and dislike about X?" is two questions. Split it.
  • Keep questions open. If a participant can answer in one word, the question isn't working: "Walk me through…" beats "Did you…".
  • Cover every research objective with at least one question.
  • Follow a sequence: warm-up → context → deep dive → exploration → wrap-up, with a short statement at each section transition.
  • Keep the intro to project context (don't mention recording, time, or future contact), and close with a simple thank-you.

Tips

  • Write questions like you'd say them out loud. The moderator's voice will deliver them. Long, jargon-heavy questions sound stilted when spoken.
  • Use follow-ups generously on open questions. They draw a fuller explanation from a participant who answers "yes".
  • Use Statements between sections to give participants context and warmth. The moderator will sound less robotic.
  • Tasks need clear success criteria. Tell the moderator what "done" looks like: completing a flow, finding a button, voicing a reaction.

Related

Add survey questions

Structured response steps: multiple choice, ranking, ratings, sliders, open text.

Add a stimulus

Images, video, websites, embeds, written concepts, and Figma prototypes.

Conditional sections

Show sections based on screener answers, earlier survey responses, or quotas.

Randomize sections (A/B variants)

Show different content to different participants, randomly and stickily.

Add a card sort

Have participants drag cards into groups to reveal how they organize your ideas.

Add a tree test

Give participants a task and a menu of labels to learn whether they can find things in your navigation.

Build your screener

The screener is the short questionnaire that decides whether someone qualifies for the interview. Build it in the top region of the Guide panel.

Best practices

Rules and rules of thumb for screeners and question guides that produce genuine, useful responses.

On this page

StepsWhat can go inside whatBest practicesTipsRelated