Accuracy feedback after setting 'correct' in inline script

froukehe

Possibly something very trivial:
I'm using an inline python script to set the accuracy of a response based on where the participant clicks the mouse in the display (using the 'correct' variable). If I then try to give feedback using 'acc', only the last response is provided, not the average. How do I change this to the percentage correct?
Thanks!

Josh

Hi,

You said you're using an inline_script to set the accuracy of a response. Do you mean the accuracy of a single response, e.g. the further away from a target, the lower the acc? If so, then the variable acc is only the last response per definition. Why not create a variable that is updated with every response, so that it represents the average accuracy across trials? You could keep the original acc variable, and create a list (before entering the block loop) by means of resp_accs = [].
In the inline script in the block loop, below the line where you create acc you can add the lines

  resp_accs.append(acc)
  exp.set('average_acc', round((sum(resp_accs)/float(len(resp_accs))),2)

Cheers,

Josh

froukehe

Thanks! It worked when I changed the code slightly:

av_correct=100*sum(resp_accs)/len(resp_accs)

exp.set('Av_acc',av_correct)

sebastiaan

Hi Frouke,

You could also use the set_response() function, which will update the feedback variables automatically:

• http://osdoc.cogsci.nl/python/common/

Cheers!
Sebastiaan