# Feedback, responses and validations

Feedback means the correct or incorrect response displayed when a participant presses a key on their keyboard or clicks a mouse button. When the participant presses a key, the element will move onto the next one, regardless of the element's duration. <br>

Response options include:

* Any keypress means that the experiment will move onto the next element when the participant presses any key on their keyboard.&#x20;
* Nominated keypress means the experiment will move onto the next element when the participant presses the specified key(s) on their keyboard.&#x20;

Feedback options include:

* Sound and visual feedback for correct responses. When a participant selects a correct answer, a green tick is shown and/or a 'correct' sound will play. &#x20;
* Sound and visual feedback for incorrect responses. When a participant selects an incorrect answer, a red cross is shown and/or an 'error' sound will play.&#x20;

Key validations include:

* Define whether a subject's response is given a tick or cross.&#x20;
* Can be set for an element tag, name, text, or color.&#x20;

The name used for a validation must use the file name for that element. Do not give the validation a different name. \
\
To add responses, feedback or key validations to a stimuli phase, click on the **Settings** button, then select **Response**.

![](https://lh5.googleusercontent.com/VvsW8fQ9QkjF7GQgehgCY0IRvXYth_Yz1IvajogS9TP_kSdAt04CWLG8-bMTWgvLAHbuCJq_V7_4QAuprJ34oCpRQY0kFZnYwdwNWSqVmjRuI-GDPA3N41uI2yC1gTzn52EGVFfO=s0)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://emotiv.gitbook.io/emotivpro-builder/building-an-experiment-in-builder/feedback-responses-and-validations.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
