no more than 4 times in a row

Author	Message
Ulrike Nestler	Ulrike Nestler posted 9 Years Ago Topic Details Share Topic
Group: Forum Members Posts: 17, Visits: 41	Hello, i am currently programming shifting paradigm such as the color-shape task which basically consist of switch and no switch trials. And I need to know an expression that allows the order of trials to be randomized with the constraint that no more than 4 switch trials can occur in a row. Can you please help me with that? Because the usual noreplacenorepeat doesn't do it here. Thanks! UIrike Tags randomized repeat row shifting switch
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Dave	Dave posted 9 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 12K, Visits: 98K	You need to use a <list> for trial selection, with its /maxrunsize set to 4. <block myblock> / trials = [1-100=list.triallist] </block> <list triallist> / items = (trial.a, trial.b) / poolsize = 100 / maxrunsize = 4 </list> <trial a> / trialduration = 10 </trial> <trial b> / trialduration = 10 </trial>
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Ulrike Nestler	Ulrike Nestler posted 9 Years Ago ANSWER Post Details Share Post
Group: Forum Members Posts: 17, Visits: 41	Thanks so much for this fast reply! :-D
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