Currently, we recommend you try to use use your experimental software to do random assignment. 

Most experimental and survey software will support this. e.g. Qualtics, surveymonkey or Gorilla

However, to do rudimentary randomisation please create N surveys for N conditions and use the "Randomly chosen number" prescreener to group participants into N groups. 

e.g. if you have 3 conditions you can use participants who selected 1-4 for study/condition A, 5-8 for study/condition B and 9-12 for study/condition C.

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