This paper is a draft report documenting the methods and results of 15 one-on-one interviews conducted as part of the Image Optimization Research (IOR) for the decennial census. The IOR team was charged with designing a census questionnaire that was both user-friendly and capable of being data captured using current optical imaging and data scanning technologies. Development and testing of the new questionnaire was divided into three components: two waves of small-scale tests and one mailout/mailback test. This report documents results from the Wave 1 component.