Abstract: The Living Situation Survey (LSS) is designed to collect information on living arrangements, mobility patterns, and interpretations of standard terminology used in the decennial Census and in other surveys (e.g., SIPP) administered by the Bureau of the C~nsus. Results from the LSS will be used to identify experimental procedures and methods for reducing undercounting, especially among individuals who are highly mobile and who may not be associated with a single, well-defined household unit. This report summarizes results from pretest research activities designed to evaluate LSS draft questionnaire materials and to provide recommendations for questionnaire revision. Section 1 of this report describes the draft questionnaire materials, the pretest design and pretest methods, and pretest respondent characteristics. Section 2 of this report reviews general pretest results and questionnaire revision strategies developed based on the pretest results. Section 3 of this report gives more specific information about pretest results and recommended revisions for individual draft items, and Section 4 summarizes the major pretest findings. Appendix A contains LSS pretest questionnaire materials, Appendix B contains summaries of individual pretest interviews, and Appendix C contains revised LSS questionnaire materials.