Suggestions for a Self-assessment

I am using the new Captivate to create a training on ergonomics with knowledge checks throughout and a self-assessment at the end. For the self-assessment, I'm using graded questions so the results are sent to the LMS. I want there to be correct and incorrect messages on the knowledge checks, and that function is working as expected.

However, I do not want the self-assessment to include correct or incorrect messages, as we are basically asking them if they have pain or are struggling to apply the guidelines we recommend in the training at their job. Is there a way to turn the correct and incorrect messages off for certain slides? If not, can anyone think of a workaround I could use?