Stanford COCO Lab

You will be be asked some questions about a marble game. Should take about 8 minutes. Please pay attention, thanks!

Legal information: By answering the following questions, you are participating in a study being performed by cognitive scientists in the Stanford Department of Psychology. If you have questions about this research, please contact Daniel Hawthorne at or Noah Goodman, at You must be at least 18 years old to participate. Your participation in this research is voluntary. You may decline to answer any or all of the following questions. You may decline further participation, at any time, without adverse consequences. Your anonymity is assured; the researchers who have requested your participation will not receive any personal information about you.

Let's do one more.

You have a chance of loosing $20to win $20

You have a chance of loosing $20to win $20

You !

We'll start you with a 10¢ bonus, and we will select one of the following rounds at random to determine your final bonus.

First we'll ask you some questions about what you think about a marble-drop game.

The marble is dropped from the blue arrow and will either land in the bin with the box or the bin with the box.

What do you think is the chance that the marble lands in the box?

Certainly Won't Certainly Will 50/50

Let's see what you are playing for this round!

Bonus Trial

We randomly selected trial #3 where you had a chance of losing $1.

What do you think is the chance that the
marble will land on the $-$ side and you'll ?

Certainly Won't Certainly Will 50/50

How much do you care about the outcome?

Not at All A Lot

Did you consider the position the marble was dropped from when thinking about where the marble was going to land?

Was there anything that didn't make sense or seemed off about this HIT?

Were you answering questions about:


What factors did you consider when thinking about your chances of getting the favorable outcome?

Breifly explain how the game worked

Additional information

Answering these questions is optional, but will help us understand your answers.

Did you read the instructions and do you think you did the HIT correctly?



Level Of Education

Native Language

Did you enjoy the hit?

Thanks for your Time!
You can click the "Done with Experiment" button