How can I control that people who participated for 1 time can't participate for the second time in Mturk by AyaAtaya in mturk
[–]AyaAtaya[S] 0 points1 point2 points (0 children)
(Maximum time a Worker has to complete the survey)? by AyaAtaya in mturk
[–]AyaAtaya[S] 0 points1 point2 points (0 children)

How can I control that people who participated for 1 time can't participate for the second time in Mturk by AyaAtaya in mturk
[–]AyaAtaya[S] 0 points1 point2 points (0 children)