Latin Square design using JavaScript

Daniel_513 · May 2020

Hello,

I am trying to figure out how to implement a latin-square randomized design using JavaScript so that I can run the experiment online. I have created a quick template, with 4 different blocks of trials, to figure out how it would work. I referenced a post by sebastiaan (https://forum.cogsci.nl/discussion/2401/selecting-randomization-lists-in-latin-squared-designs). Details are shown in the images below:

When I try to run this as shown, I get an error message "ReferenceError: items is not defined". Any ideas or suggestions on how I can make this work?

Thank you!

--Daniel

Daniel_513 · May 2020

** Sorry for the duplicate post **

I solved this problem by using the "slice" command in the block_loop, after creating two variables at the top of the experiment, as so:

vars.slice_top = (vars.subject_nr * 4);

vars.slice_bot = (vars.slice_top + 4);

In the block_loop script, I put:

slice "[slice_top]" "[slice_bot]"

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