本研究旨在瞭解台灣民眾對一夜情態度為何，利用質量並重、專為探討主觀態度及價值觀的Q方法作為研究工具，企圖摒除傳統大樣本量化研究，難以探索受訪者各個層面間觀點差異之憾，並將其主觀意識更完整表達。綜合分析Q分類結果根據受訪者的訪談整理可分為三大類型：「情感貞潔型」、「性愛愉悅型」、「矛盾情緒型」。關聯性比對發現，有無一夜情經驗對其態度影響較其他背景變項高。研究建議為以下幾點：1.研究結果發現有無一夜情經驗對其態度影響較其他背景變項高，其中矛盾情緒型有經驗的比例最高，建議未來可針對是否有一夜情經驗與其態度的關係進一步探討。2.訪談過程發現許多受訪者的性知識仍有誤解，建議針對以下幾點加強說明，如：「性解放」一詞解釋、婚外性問題、安全性行為知識、尋找性的方式具高風險。此外，亦建議增加情感教育以增進民眾對情感價值觀之認識。3.研究方法的建議：（1）後續研究如欲得更精細之分類，陳述句可針對單一層面進行設計；（2）普遍認知較敏感或隱私議題之研究，可考慮網路施測或現場施測、網路（電話）訪談，以避免得到無效訪談結果；（3）不同類型數之因素負荷顯著量相同者，其解釋變異量若接近，可選擇較少之類型數；若差距大，則相反之。

With changes of social ethos in Taiwan and the increasing convenience of communication tools and network, more and more people become receptive to one-night stand and sexual hookup. Statistics show that the popularity of one-night stand in Taiwan has been increasing in recent years, but the average age of such people has been decreasing. This research aims at understanding the attitudes of Taiwanese people towards one-night stand, and uses the research tool of Q method that pays equal attention to the quality and explores subjective attitudes and values in order to make up for the disadvantage that the traditional quantitative research of large sample has difficulty in exploring the differences of opinions of interviewees at all levels and to more completely express their subjective idea. According to the comprehensive analysis of Q classification result respecting the interview, the interviewees can be divided into three types: ＂Emotional Chastity Type,＂ ＂Erotic Pleasure Type,＂ and ＂Emotional Ambivalence Type.＂ The correlation comparison unveils that whether the experience of one-night stand exists has higher influence than other background variables on their attitudes. Research suggestions are as follows: 1. The research result reveals that whether the experience of one-night stand exists has larger influence on their attitudes than other background variables. The interviewees of Emotional Ambivalence Type who has this experience have the largest proportion. It is supposed to explore the relationship between whether the experience of one-night stand exists and their attitudes. 2. During the interview, it is found that misunderstanding exists in sexual knowledge of many interviewees. The following aspects should be focused to explain, e.g, explanation on ＂Sexual Liberation,＂ issue of extramarital sex, knowledge of safe sex, ways of seeking sex are highly risky. Furthermore, we can increase emotional education so that the public's opinions on correct emotional values will be improved. 3. Recommendations for research method: (1) In order to obtain more detailed classification, subsequent researches can focus on single aspect; (2) Researches on widely believed sensitive or private issues can consider network testing and interview or site testing, network (telephone) interview to avoid invalid interview result; (3) For the same significance of factor loading on number of types (the number of people classified is the same), if the explained variance is close, the smaller number of types is adopted; if the variance is large, the larger number of types is adopted.