Hey there,
In a block, I usually want my trials to be selected by the noreplace selectionmode. However, usually I want some types of trial to be presented more often than others. For example, in a 36-trial block I may want 20 trials to be of type1 and the remaining 16 to be type 2's.
Now, how do I add this weight of trials to the trials attribute? I can't simply type in
/trials = [1-36=noreplace(type1, type2)]
Because this way the 20/16 distribution isn't respected. I also can't use
/trials = [1-20=type1; 21-36=type2]
Because this pattern makes it way too easy for participants to guess the next trial and it might evoke habituation of their responses.
My current solution is to use the first attribute and to type out all the trials. Thus, between the parenthesis I enter type1 twenty times and type2 sixteen times, with copy paste of course.
However, there is more than one block and sometimes a block contains way more trials. This makes my own solution quite inefficient. Does anyone know how to enter two (or more) types of trials and tell Inquisit how often they should be presented in a block?
Best,
SWQ