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randomizing groups stopped working

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beccaccp	beccaccp posted 4 Years Ago Topic Details Share Topic
Group: Forum Members Posts: 11, Visits: 40	would adding html page of preinstructions for expt change the randomization of groups? ever since i added that page I am always getting the pos block first. <expt> / subjects = (1 of 2) / groupassignment = random / preinstructions = (htmlpage.icf) / blocks = [1 = ICF; 2= demosurvey; 3=practiceblock; 4=block.start; 5=minone; 6=mintwo; 7=posone; 8=postwo; 9= erqsurvey; 10 = survey.cesd] </expt> <expt> / subjects = (2 of 2) / preinstructions = (htmlpage.icf) / groupassignment = random / blocks = [1=ICF; 2= demosurvey; 3=practiceblock; 4=block.start; 5=posone; 6=postwo; 7=minone; 8=mintwo; 9= erqsurvey; 10 = survey.cesd] </expt> Attachments behavior822111.iqx (182 views, 44.00 KB)
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Dave	Dave posted 4 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 105K	+x beccaccp - 8/2/2021 would adding html page of preinstructions for expt change the randomization of groups? ever since i added that page I am always getting the pos block first. <expt> / subjects = (1 of 2) / groupassignment = random / preinstructions = (htmlpage.icf) / blocks = [1 = ICF; 2= demosurvey; 3=practiceblock; 4=block.start; 5=minone; 6=mintwo; 7=posone; 8=postwo; 9= erqsurvey; 10 = survey.cesd] </expt> <expt> / subjects = (2 of 2) / preinstructions = (htmlpage.icf) / groupassignment = random / blocks = [1=ICF; 2= demosurvey; 3=practiceblock; 4=block.start; 5=posone; 6=postwo; 7=minone; 8=mintwo; 9= erqsurvey; 10 = survey.cesd] </expt> > would adding html page of preinstructions for expt change the randomization of groups? No. Attached two data files from subsequent runs, showing different random orders. Attachments behavior822111_raw_3_2021-08-02-18-44-34-438.iqdat (334 views, 356 bytes) behavior822111_raw_4_2021-08-02-18-45-58-862.iqdat (289 views, 356 bytes) Edited 4 Years Ago by Dave
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