> ## Documentation Index
> Fetch the complete documentation index at: https://docs.userintuition.ai/llms.txt
> Use this file to discover all available pages before exploring further.

> Pick the study type that matches what you want to learn. There are three, and all three follow the same setup process.

# Create Study

Pick the study type that matches what you want to learn. There are three, and all three follow the same setup process — what differs is whether participants react to something, and what.

**In-depth Interview** is selected by default.

***

## The three study types

| Study type             | Best for                                              | What participants do                           |
| ---------------------- | ----------------------------------------------------- | ---------------------------------------------- |
| **In-depth Interview** | Understanding experiences, motivations, and decisions | Talk through what they did and why             |
| **Concept Test**       | Reactions to an image or video                        | React to your concept and explain the reaction |
| **Prototype Test**     | Watching people use something                         | Work through your prototype while narrating    |

### In-depth Interview

**No stimulus required — just a conversation.** Use this when you want to learn from people's lived experience. Charles guides a focused discussion about what they did, why, and what they'd change.

Reach for it when you're doing discovery, digging into a decision moment, exploring before you commit to a direction, or hunting for unmet needs.

### Concept Test

**You have something to show.** An ad, a landing-page mockup, packaging, a feature explainer. Add the image or video, and Charles walks participants through reacting to it.

Reach for it for creative testing, messaging validation, packaging or pricing-page reactions, or A/B-style concept comparison.

### Prototype Test

**You have something to try.** A prototype, a clickable mockup, or a live site. Share the link and participants work through it while narrating their thinking.

Reach for it to validate a flow before you build it, find where people get stuck, compare an old design against a new one, or run a pre-launch usability check.

<Card title="Study types in depth" icon="layer-group" href="/study-types/overview">
  What each study type does, how to set it up, and what you get back.
</Card>

***

## How to select your study type

1. Review the three cards on screen
2. Click the one that matches what you're trying to learn
3. The selected card is highlighted with a dark background
4. Click **Save & Continue**

> **Not sure?** Start with **In-depth Interview**. Charles will help shape the plan once you describe what you want to learn, and you can come back and change it.

***

## What happens next

You'll move to [Step 2: Customize Plan](/creating-a-study/customize-plan), where you work with Charles to tailor the research plan to your context.

***

## Frequently Asked Questions

<AccordionGroup>
  <Accordion title="Can I change my study type after selecting it?">
    Yes. Click **Back** at any point during setup to return here and pick a different one.
  </Accordion>

  <Accordion title="Do different study types cost different amounts?">
    No. Cost depends on the interview format — chat, voice, or video — not the study type. See [Billing and credits](/resources/billing-and-credits).
  </Accordion>

  <Accordion title="What if my research spans more than one study type?">
    Pick the one that matches your primary objective. During Step 2, tell Charles about your other objectives and he'll work them into the plan.
  </Accordion>

  <Accordion title="Can I show an image in an in-depth interview?">
    Yes. In-depth interviews accept concept images too, so a conversation can turn into a concept test partway through if that's what the moment calls for.
  </Accordion>
</AccordionGroup>