Shuffling blocks while maintaining order in the block

[staceyra]

Hi all, I am brand new to Ibex, so I’m sorry if this is a question is an easy fix.

I am currently building an experiment that has 4 blocks using a template, and the flow of experiment is training -> experimental blocks. I have 4 blocks, and I want the order within those blocks to be the same across all experiments, but I want for participant 1 to see order: training -> block 1, block 2, block 3, block 4, and for participant 2 to see order: training -> block 3, block 2, block 4, block 1, and so on for all the participants. I’m not sure if seq, randomize, or shuffle, or some combination of those is what I might be looking for. Thanks!

[Jeremy]

Hi,

I’ll be assuming that your trials are labeled "block1", "block2", "block3" and "block4". Then you can do this:

PennController.ResetPrefix(null)

var blocks = ["block1","block2","block3","block4"];
fisherYates(blocks);

Sequence("training", ...blocks)

Jeremy

[Author]

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