PennController for IBEX › Forums › Support › Priming experiment with pseudorandomization
Tagged: pseudo-randomization
- This topic has 2 replies, 2 voices, and was last updated 1 year, 9 months ago by
Da_Ri_.
-
AuthorPosts
-
November 19, 2022 at 11:59 am #9720
Da_Ri_
ParticipantI am trying to make a priming experiment with pseudorandomized-ordered items. The item order I am trying to make is something like filler-filler-filler-prime-target-filler-filler-filler-prime-target-filler-filler-filler. . . . In other words, three filler items appear before and after each prime-target pair. I am not sure how I can do this because my csv file has two rows ‘prime’ and ‘target’ as below.
group,prime,target,pairtype,condition,correct A,prime1A,target1A,target,noun.noun,f A,prime2A,target2A,target,noun.noun,f A,prime3A,target3A,target,noun.noun,f A,prime4A,target4A,target,noun.noun,f A,prime5A,target5A,target,noun.noun,f
Then, I would have to put filler items as below:
group,prime,target,pairtype,condition,correct A,filler1A,filler1A,filler,filler,f A,filler2A,filler2A,filler,filler,f A,filler3A,filler3A,filler,filler,f A,filler4A,filler4A,filler,filler,f A,filler5A,filler5A,filler,filler,f
This format does not allow me to insert three fillers before and after a prime-target pair. It allows me to insert two or four filler items before and after a prime-target pair but not four.
Any idea helps. Thank you so much.
-
This topic was modified 1 year, 9 months ago by
Da_Ri_.
November 22, 2022 at 7:13 pm #9727Jeremy
KeymasterHi,
Looking at your question and your tables, I think that you are talking about presenting several stimuli within a *single* trial, and that your subsequences
prime-target
correspond to single trials. As far as I understand, a single trial in your experiment has the following structure:- Show a prime word
- Show a target word
- Show a post-target word (filler trials only)
My suggestion is you add a column after
target
in your table for the third word, and simply leave it empty for the target trials. Then, in thenewTrial
command insideTemplate
, you include the third stimulus only for the filler items. The basic idea would be something like this:Table:
group,prime,target,post,pairtype,condition,correct A,prime1A,target1A,,target,noun.noun,f A,prime2A,target2A,,target,noun.noun,f A,prime3A,target3A,,target,noun.noun,f A,prime4A,target4A,,target,noun.noun,f A,prime5A,target5A,,target,noun.noun,f A,filler1A,filler1A,filler1A,filler,filler,f A,filler2A,filler2A,filler2A,filler,filler,f A,filler3A,filler3A,filler3A,filler,filler,f A,filler4A,filler4A,filler4A,filler,filler,f A,filler5A,filler5A,filler5A,filler,filler,f
Script:
Template( "mytable.csv" , row => newTrial( row.condition , newText( "prime", row.prime ).print(), newTimer(1000).start().wait(), getText( "prime" ).remove() , newText( "target", row.target ).print(), newTimer(1000).start().wait(), getText( "target" ).remove() , ...( row.condition=="filler" ? [ newText( "post", row.post ).print(), newTimer(1000).start().wait(), getText( "post" ).remove() ] : [] ) // ... ) .log("pairtype",row.pairtype) // ... )
Jeremy
November 22, 2022 at 10:50 pm #9728Da_Ri_
ParticipantThank you so much! I’ll try it.
-
This topic was modified 1 year, 9 months ago by
-
AuthorPosts
- You must be logged in to reply to this topic.