"item.get()" has been removed in OpenSesame 4

Kiko_Biggonero

Hi everybody.

I would like to generate a simple experiment with two blocks counterbalanced between the subjects.

Naturally, I followed the instructions of a tutorial dedicated explicitly to counterbalancing. Although I know I could achieve my goal by manipulating/using the 'subject_parity' function, I prefer the second proposed alternative, which handles counterbalancing via a higher-order 'Loop_sequence'. A few lines of programming were required, which I adapted from the tutorial. I quote them below:

IF self.get('subject_nr')%2==1:

   b1=0

   b2=1

else

   b1=1

   b2=0

exp.set('b1',b1)

exp.set('b2',b2)

When I run the experiment, the following error message appears: "item.get() has been removed in OpenSesame 4

Can you suggest how to solve the problem?

@moreno is helping me

Thank you very much

Enrico

Fab

Hi @Kiko_Biggonero ,

In Open Sesame 4, I you can address variables directly.

For example:

If subject_nr%2==1:

   b1=0

   b2=1

else

   b1=1

   b2=0

Hope this helps.

Fabrice.

Kiko_Biggonero

That sounds much easier! 😄

I'll try it as soon as I can and let you know.

In the meantime, thank you very much for your reply.

Enrico

Kiko_Biggonero

Sorry, I still need some help.

As you can understand, I am a beginner in Open Sesame...

To counterbalance the blocks, I must also indicate under which conditions a particular block should be presented. This information should be entered in the "RUN IF" window for each block.

In the original tutorial, the following formula was indicated:

=self.get('b1') == self.get('count_mainsequence')

where 'b1' would refer to one block (and 'b2' would refer to the other).

This formula must be modified because, as we know, the system removed the 'item.get' instruction from the latest version.

I tried this: =b1 == ('count_mainsequence')

But it doesn't work: when I run the experiment, no stimulus is presented, and it goes directly to the final greetings...

Could you please help me again?

Thank you very much!

Fab

Hi @Kiko_Biggonero,

Difficult to debug it without seeing the task but try the following under the "Run if" condition:

b1 == count_mainsequence

Just remember that in Open Sesame 4, you can just use the variable names directly.

Otherwise, please upload your task or a stripped down version it so that I can take a look.

Best,

Fabrice.

Kiko_Biggonero

It works !!!

I am very grateful.

Thank you very much

Enrico

Fab

Hi @Kiko_Biggonero,

Glad I could help!

Good luck with your experiment!

Fabrice.