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Jappy

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Hi all,
I'm a newbie in MTurk, really need your help. I have an online experiment with 8 conditions (i.e., 8 HITs), and I want to avoid worker who has accepted one of my HITs to do any other HITs, or to retake the same HIT. Is that possible? How to do that?
 

electrolyte

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You can use qualifications to put workers into groups and allow them to only access HITs within that group. Here are two posts from MTurk about using qualifications:

https://blog.mturk.com/tutorial-managing-worker-cohorts-with-qualifications-e928cd30b173
https://blog.mturk.com/tutorial-understanding-requirements-and-qualifications-99a26069fba2

Here are other ways to fairly prevent retakes:

http://wiki.wearedynamo.org/index.p...ester#Avoid_duplicates.2Fretakes_in_fair_ways

Here's a post about preventing retakes with qualifications:

http://www.mturkcrowd.com/threads/how-do-i-give-workers-qualifications-for-taking-my-survey.335/
 
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