I am trying to make it so that I ask the participants a series of questions, and based on those answers they are asked another series of questions. For example, I'd ask them Do you like icecream, do you like chips, do you like pop, do you like candy. If they answered yes to icecream and pop, then only these questions would be rated "on a scale of 1-8 how much do you like icecream" "on a scale of 1-8 how much do you like pop". Because they answered that they did not like pop and candy I want them to never be asked these questions. In addition, I want the first set of questions to be randomized. I cannot seem to get this to work and any help would be greatly appreciated.