Insert break at middle trial sequence

Lajov

Hi,

In an attentional paradigm, I have to insert a break at the middle of the trial sequence. Do I have to create a new sketchpad, and if yes, whats is the procedure?

Thanks

Lajov

I add that my OS version is 3.3.14

Fab

Hi @Lajov,

The simplest way to do this is to insert the sketchpad or events you want to use as the break into the sequence of your trial, and use the "Run if" function of these objects to condition them to run under certain conditions. In this case, you could condition these to be presented when the trial number corresponds to a certain value. You could either use code to create a variable counting the trials and use that, or you could use one of the "count" variables corresponding to an object presented in the trial.

See also: https://forum.cogsci.nl/discussion/592/solved-how-to-get-a-pause-mixed-in-with-120-trials

Hope this helps,

Fabrice.

Lajov

Thanks for answer.

Now we have created the variable 'count_trial_sequence', have we to enter manually every number until the end (240 trials) or is there a faster technic?

eduard

Hi Lajov,

See the attached experiment for an example how to implement a break half way a sequence.

Hope this helps,

Eduard

Newexperiment.osexp

Lajov

Thanks for this quick answer Eduard,

but my trial's sequence must be randomized, so there is no order of appearance. Yours is sequential, what makes the implement of break more easy I think. So, I think your technic is misfit for my experiment, isn't it? Thanks for share

eduard

No, it isn't. It will work just as well with randomized sequences. I used sequential just for demonstration. If you choose randomized, you must count whether it is indeed the 5th (I think I chose the 5th) trial that the break follows on.

Lajov

Thanks for this quick answer Eduard,

but my trial's sequence must be randomized, so there is no order of appearance. Yours is sequential, what makes the implement of break more easy I think. So, I think your technic is misfit for my experiment. But thanks to share.

Fab

Hi @Lajov,

@eduard is right ("No, it isn't. It will work just as well with randomized sequences."). Have you tried it? Just change the loop to random and you'll see that it stops for a break after 5 trials. As Eduard pointed out, whether the loop runs sequentially or randomly makes no difference at all to this method.

count_new_sequence is a variable that starts at 0 ad goes up as the sequence in question is executed. It is not the trial variable contained in the new_loop.

Best,

Fabrice.