[solved] Record Random Order

danielcwhite

Hi All,

I have tried searching the forum for the answer to this but the answers all seem to be combined with other questions that need answering!

Basically I am just trying to adapt the tutorial experiment to get a hand of things, and am only planning on running each cycle once, which I have done. However, the cycle will be in a random order.

I cant figure out a way for logger to output the sequence/trial/cycle number that goes with each response the participant gives.

The idea is each cycle will provide a priming word, however in the output it would be easier for me if I could see which RTs were associated with each cycle (as cycle 1-4 may use one word, whereas 5-8 may use a different word, so it would allow me to group these together).

Thanks in advanced!

Dan

Edwin

Hi Dan,

I'm not quite sure which of the options below you were looking for, so I'll give them both:

Log running order of random sequences

To log the current cycle number, it's easiest to use a variable that is auto-created by OpenSesame. Let's say you have a loop that runs a sequence called single_trial. The auto-created variable that keeps track of the amount of times this sequence is run (which equals the cycle number) is then called count_single_trial. For the first cycle its value will be 0, for the second its value will be 1, ..., for the Nth cycle its value will be N-1. So this will produce the order [0,1,2,3,4] for five trials.

Log cycle number regardless of running order

To log the cycle number, the easiest thing to do is add a variable called cyclenr to your loop. Log this variable and you will know exactly which cycle was run when. An example of the order this produces could be [3,2,4,1,0] for five trials.

Does this make sense?

danielcwhite

Yeah definitely, I cant believe I didnt think of the doing the second option!

Thanks!