remember samples from list between participants

[Leon van Rijswijk]

Hello everyone,

I have been puzzling over this for a couple of weeks now, but I do not seem 
to be any closer to a solution. The problem is that I want E-Prime to 
exhaust a particular list over multiple participants without selecting 
samples that have already been selected for previous participants. I will 
try to break down the problem in a simplified version of the real 
experiment I'm designing.

Suppose I want to present one stimulus at various stimulus presentation 
times. I have nine different presentation times in a nested list under the 
stimulus, but I do not want one participant to view my stimulus for more 
than three times. I thus only present the stimulus three times for each 
participant. For the first participant it randomly selects three stimulus 
presentation times from the nested list (which is set with options: reset 
sampling (all samples (9)), reset sampling at the beginning of each run is 
unchecked, exit list after 1 cycle (9 samples)). Now, for the second 
participant I want to randomly select from the six presentation times that 
have not been selected previously and for the third participant I want to 
randomly select the remaining three stimulus presentation times. To me this 
seems like basic functionality but whatever I have tried I cannot get this 
to work properly. It just seems to reset the sampling once the experiment 
closes.

Any ideas will be greatly appreciated!

Cheers,

Leon


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