調查研究被廣泛的使用於現今社會，而研究中出現頻繁的「無反應」問題卻常為研究者帶來統計分析過程中的困擾，基於預防重於治療的前提下，「無反應」因素的探究有其必要性。本研究的目的即在現有的理論基礎上，針對「敏感性」問題於「無反應」（收入及投票意向問題）中的情況，應用卡方檢定與logit模型驗証其於本研究的適切性，並進一步建立新的「無反應」問題解釋模型，以幫助我們瞭解此種「無反應」問題在現有台灣調查研究中可能存在的因素，進而減低對研究結果的影響。 影響「無反應」因素的驗證部份，大致上與過去相關的研究結果相同，只有少數的變項有所差異。另外，在模型配適的解釋部份，收入的研究結果中會影響收入「無反應」的因素有：受訪者年齡、受訪者職業、訪員性別、訪員經驗以及調查問題型式。投票意向的研究結果顯示，影響投票意向「無反應」的因素有：受訪者的性別、省籍、政治參與度、對統獨立場的看法、對族群認同的看法、受訪者的性別與對統獨立場看法的交互作用以及受訪者的省籍對族群認同看法的交互作用。本研究的研究結果主要適用於敏感性問題中影響收入與投票意向問題之「無反應」因素情況。 / Investigative process is widely used in our society today. However, statistical analysts are often bothered by the frequent occurrence of the nonresponse problem. Hence, it is important to investigate the cause of the nonresponse situation. The purpose of this research is to create a new model to explain the nonresponse problem in certain sensitive situations. There are two types of questions of sensitive nature; namely, income level and voting inclination, that lead to the nonresponse. We have explored two methodologies, Chi-square test and Logit model, for their applicability to the study. The study will help us to understand what are the factors influencing the nonresponse for investigative process conducted in Taiwan. These findings may be used to reduce the impact of the nonresponse in regards to how we can interpret the results. In terms of verifying influential factors of the nonresponse, there are only a few different outcomes in comparison with previous research results. To find factors in regard to income level, the following five elements are identified: the age of the interviewee, the occupation of the interviewee, the gender of the interviewer, the experience of the interviewer, and styles of the questionnaire. As for the voting inclination, we found the following factors: interviewee's gender, birth origin, degree of political participation, viewpoint toward the issue of unification/independence, and opinion of ethnic identity; interaction between interviewee's gender and his/her viewpoint toward the issue of unification/independence, and interaction between interviewee's birth origin and opinion of ethnic identity. The main application of this study is to identify the various factors causing nonresponse phenomenon in reaction to sensitive questions of income level and voting inclination during an investigative process.