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Experimental design problem: Adding random numbers for 2 minutes

#1 by Jnut


I am using otree Studio and my goal is to desing an experiment where players play for 2 minutes and they have to add random numbers. Afterwards they get paid based on the number of correctly solved cases.

My plan was to add code into a button that is executed on click. After the click, the page should be refreshed and a new task calculated.

I can imagine a way where I add hundreds of pages with the tasks one after another, but that does not seem efficient.

So, is there a way to add a button that refreshes the page and executes code that generates a new task


#2 by BonnEconLab (edited )

You could use rounds for that. Set C.NUM_ROUNDS to a number that is larger than the number of correct answers that your participants can realistically come up with.

Your 2-minute timeout then has to span multiple pages. This can be implemented as described on https://otree.readthedocs.io/en/latest/timeouts.html#timeouts-that-span-multiple-pages.

The “math_task” app included in the replication package https://doi.org/10.5281/zenodo.5091975 does exactly that.

#3 by gr0ssmann

I would use a live page for that. You can store JSON-encoded data in a player's StringField, or use an ExtraModel for that.

Upon clicking a button, a new challenge can be created.

Here is an old example from my oTree course where I used a live page to build a truly in(de)finitely repeated prisoner's dilemma: https://gitlab.com/gr0ssmann/otree_course/-/tree/2021/infpd-v02-live?ref_type=heads

Here is another example from a real-effort task: https://gitlab.com/gr0ssmann/otree_course/-/tree/2023/conjoint-v02-ret?ref_type=heads

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