We am creating a survey (9 questions), each of which has four options (more like user preference with no one correct answer). We intend to show him one question at a time and let him move to the next one once he has selected an option. Most users would see this page 1-2 times overall but we want a majority of them to finish the questionnaire.
One choice is that we put a radio button next to the options, and the user clicks next to advance. So, the user will need to click 18 times.
Other choice is that we design the options as buttons (2x2), with the click taking him to the next question automatically, with a previous button to let him go back if he wants to change the option. The last question would have an explicit submit button. So total 10 clicks for 9 questions in most cases.
I have gone though the following similar question, and am wondering if the second option would be unnerving for users (even with the previous and final submit button).