UC Davis

UC Davis L3 Lab

Welcome! Please consider participating in this study only if you are a native speaker of English.

Thank you so much for participating in this study. You will be answering a series of questions about whether or not two individuals disagree with one another. Click NEXT to meet them.

This is Alex and Sam. They have been friends for a long time, but do not always agree on everything. You will see a series of scenarios along with beliefs Alex and Sam have about the scenarios. In all of these scenarios, Sam and Alex are not having a conversation with each other, they are simply thinking to themselves. In light of the scenario, you will be asked a question about whether or not they disagree. Click NEXT to see a sample scenario.

Sam and Alex are playing a card game with Brittany.

Alex thinks that Brittany has the ten of hearts in her hand.

Sam thinks that Brittany does not have the ten of hearts in her hand.


Do Alex and Sam disagree?

Correct! Alex and Sam disagree on whether or not Brittany has the ten of hearts.

Click NEXT below to begin the actual experiment.


Incorrect! Alex and Sam actually do disagree on whether or not Brittany has the ten of hearts.

Click NEXT below to begin the actual experiment.




What is your age?

What is your gender identity?

Have you ever taken a course which included training in formal logic?

When and how did you learn English?

What in your opinion was the goal of the experiment?

If you have any comment about the experiment, please write it here. Did you happen to run into any issues?

Thank you for participating in the study. The purpose of the study is to understand whether humans are sensitive to asymmetric disagreement. In this study, we ask participants to judge whether two parties disagree with each other or not. If you would like to know more about this topic or if you have any questions or concerns, please don't hesitate to contact the lead researcher at mwreese@ucdavis.edu.