This tutorial demonstrates how to branch participants in the experiment tree based on a response given in a questionnaire by using a Branch Node. In this tutorial, we want to branch participants based on whether they prefer dogs or cats.
In the Questionnaire, we have a question that asks participants to choose their preferred animal. For this question, we choose to save the response to the Store. To do this, we used the "Save to Store" toggle within the Multiple Choice object. Then, we choose to save the response to a field in the Store called "choice." This means that the value within the Store is accessible at the experiment tree level, and we can use this within the Branch Node.
In the experiment, we add a Branch Node and create two Groups: one for Cat Lovers and another for Dog Lovers. We set the Store field to match the name of the field in the Store where the response is saved, e.g., "choice." Then, we choose the appropriate Rule from the dropdown and set the Value that we want to use to satisfy the rule. Here, we want the value to equal "Cats" in the Cat Lovers group and "Dogs" in the Dog Lovers group. It is important that the values exactly match the Responses in the Questionnaire. You must also select one of these branches to be the Default. Participants who do not match any rules in the Branch Node will be assigned to the default branch.
Finally, we need to connect the branches to the appropriate nodes in the experiment tree. Here, we want the Cat Lovers branch connected to the "Cat choice" questionnaire, and the Dog Lovers branch connected to the "Dog choice" questionnaire.
If you want to branch participants based on Task Performance, you can check out our Performance Branching Tutorial
This video and walkthrough use the new Experiment Builder interface. If you’re still using the classic interface, it will appear slightly different.
Specifically, in Classic Experiment Builder, the Store field setting is called Property.
