Hi everyone,



For my graduation project, I have to do a online survey experiment with 9 conditions (6 experiment groups and 3 control groups). But I can not figure out how to set manupulation questions that only allow participants to go to the next question when their answer for the current check question is correct.



What I want to accomplish: find a way to force participants to go back to the previous question (a designed message) to read the message again if they check the wrong answer for the manipulation question. I need to make sure for each condition the participants are manipulated.



I would really appreciate your help! Thank you so much!