台灣民眾是否對婚外性、同居、同性戀等非常規性實踐抱持不同態度？其中 是否蘊涵性別差異？又與哪些因素有關？本文運用「2012台灣社會變遷調查： 六期三次性別組」來回答前述問題，並發現：國人對非常規性實踐的開放度，由 高至低是同居、同性戀和婚外性。其中，男女對同居的態度無顯著差異，但男性 的婚外性開放度顯著高於女性，女性的同性戀開放度則顯著高於男性。接著，男 M生」特權、傳統性別分工以及傳統婚家體制等三組假設皆部分說明非常規性實 踐的性別化態度。在婚外性開放度上，男「性」特權假設獲得廣泛支持，傳統性 別分工和傳統婚家體制假設的支持相對有限。在同性戀開放度上，三套假設皆獲 得驗證。由於男「性」特權有效說明婚外性的性別化態度，加以男性較低的同性 戀開放度，因此，如何鬆動異性戀常規性成為促進台灣性/別多元的關鍵。

Th s study nvest gates whether Ta wanese men and women demonstrate d fferent att tudes toward non-conform ng sexual pract ces such as extramar tal sex perm ss veness (EMS), cohab tat on and homosexual ty, and exam nes the mechan sms that shape these gendered att tudes. Us ng the 0 Ta wan Soc al Change Survey, th s study presents the follow ng major f nd ngs. F rst, cohab tat on s the most accepted nonconform ng sex n Ta wan, then homosexual ty, and EMS as the least accepted. Furthermore, men and women share a s m lar att tude toward cohab tat on; however, they d splay oppos te att tudes toward EMS and homosexual ty; .e. Ta wanese men are more approv ng of EMS and d sapprov ng of homosexual ty, and v ce versa for women. F nally, the gendered att tudes toward non-conform ng sex are part ally resulted from male sexual pr v leges, sexual d v s on of labor, and fam l sm. Male sexual pr v leges are the strong l nks between sex and EMS perm ss veness. In add t on, gendered att tudes toward homosexual ty are substant ally expla ned by male sexual pr v leges, sexual d v s on of labor, and fam l sm.As male sexual pr v leges underl ne men’s acceptance of EMS, and men are less l kely to accept homosexual ty, chang ng heteronormat v ty s an essent al approach to ach eve gender equal ty.