Millisecond Forums

nope. the items for hi were unique for the t and r lists. same was true for the items for lo.

> one difference i see between our scripts is that my code uses the select attribute under the picture element, but your does not use select under the text element. the code is below. not sure if this could be causing the issue.No, it can't. My code doesn't need any select attribute -- it just passively reads out the item numbers in the respective lists.Your picture elements then sample from those lists -- and they cannot sample a value that's not in the list they are sampling from, i.e., if there are no identical values in hi(r,t) and lo(r,t) as my example code proves (and you can fortunately confirm), the respective picture elements cannot show identical items.Moving on: How exactly did you confirm the display of identical pics in the two conditions? Have you examined the data file as to when / where exactly this happens (trial, block) and exactly which files are shown repeatedly?

yep, I looked at the data output. I'm pasting it below. 

> Also here is a frequency analysis. Each item should be presented only twice:What makes you think that? Given how you select blocks at the <expt> level, that's not at all true:[...]You could end up with as many as *four* runs of <block presentxxs_hi_t>, for example. Note that the above is completely different from stating:<expt>
8 = debrief]

You are right! Thanks!

In a different post I asked "I'm having Ps complete basic demographics, and would like to present different blocks depending on Ps gender. What is the best way to use this demographic information to select which block to present Ps?" I was then directed to the following post: https://www.millisecond.com/forums/Topic5460.aspx.

However, given my set up, I'm not sure how to implement the recommendations. Specifically, I'd like females to complete different 4-7 blocks than males, and information about gender is obtained in the first (of three) surveypages in the demo block.

/ blocks = [1 = demo; 2 = BFI44; 3 = bogus_eval_ads; 

4-7 = noreplace (p_hi_t, p_lo_t, p_hi_r, p_lo_r); 

8 = PAB_PB; 9 = PAB_PA; 10 = debrief]

V

Makes no difference. <block> elements have /skip attributes just like <trial>s or <surveypage>s do. You can skip the blocks that don't apply just as outlined in those examples.