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How to give feedback in builder view

What are you trying to achieve?:
I am trying to provide feedback (a picture) on each trial in a reinforcement learning paradigm, each stimulus has a probability of being correct. For example, choosing the left shape will lead to a positive outcome 80% of the time, whereas the right shape will be the opposite.

What did you try to make it work?:
I am not familiar with the coder view so any help would be hugely appreciated!

Look at the Demos. For example, the Stroop task shows how feedback stimuli can be updated based on participant input in a preceding trial.

You will not need to use the Coder view for this, just a little code within the Builder.