Qualtrics Handbook of Question Design introduces key best practices for question design along with the theoretical and empirical rationale behind those best practices. Follow these best practices and more to design questions that will enable your respondents to give you their best data.  Survey data are only as good as the questions that generate them. It’s important to understand best practices for question design along with the theoretical and empirical rationale behind those best practices.  The recommendations made in this guide are based on a large academic literature about question design in survey methodology along with evidence for best practices that we have discovered at Qualtrics.