Adding Attention Check Functionality to a Survey

Hello all,
I am trying to add a system of attention/error checking to my survey so that participants who do poorly in practice questions will be cycled back through the instructions page and encouraged to reread them carefully. The format of the questions is multiple-answer multi-choice questions, where the participants are supposed to select all relevant answers to the question. Is there a way, with javascript or otherwise, to apply if-then statements to the participant's selected answers, such that, for each incorrect answer an embedded incorrect value increases by one?
Thank you.