正在考慮同居嗎？同居的原因與長期的關繫結果密切相關

Thinking About Moving in Together? Reasons for Cohabitation are Associated with Relationship Outcomes Over Time

—《伴侶與家庭心理學：研究與實踐》第15卷第2期，2026年6月—

<Couple and Family Psychology: Research and Practice>, Volume 15, Issue 2 June 2026

【摘要】戀愛伴侶同居是浪漫關係發展中的一個常規階段，人們選擇同居的原因各不相同。鮮有研究探討同居原因是否會對長期的關係運作產生影響。本研究考察了三種常見的同居原因（即：為了共度時光、為了考驗關係、出於便利）與隨時間推移的關繫結果（關係運作狀況及關係破裂）之間的關聯。在一項為期5年（2007年至2012年）的縱向研究中，研究人員對處於異性戀關係並與伴侶同居的成年人（N=485）進行了調查，收集了他們同居的原因（數據採集時間最接近同居發生之時）以及關係狀態和運作狀況（涵蓋多達11個調查波次）的相關信息。結果顯示，越是出於“共度時光”這一原因而同居，同居後的整體關係運作狀況越好；越是出於“考驗關係”這一原因而同居，同居後的整體關係運作狀況越差，且關係破裂的可能性越高；出於“便利”原因同居則無法預測同居後的關繫結果。這三種原因均未能預測關係運作狀況隨時間變化的軌跡（即變化斜率）；相反，無論同居原因如何，人們在同居後的關係運作軌跡呈現出相似的模式，儘管其起點水平（即同居時的初始水平）存在差異。同居原因似乎反映了同居前的關係質量，而非影響同居後的關係發展軌跡。研究結果強調了伴侶在決定同居時探討各自同居動機的重要性。

【關鍵詞】同居；原因；分手；縱向研究；關係運作

[Abstract] Romantic couples moving in together (i.e., cohabitation) is a normative stage of romantic relationships, and people report different reasons for moving in together. Few studies have examined whether reasons for cohabitation have implications for relationship functioning over time. This study investigated how three commonly endorsed reasons for cohabitation (i.e., to spend time together, to test the relationship, and out of convenience) were associated with relationship outcomes (relationship functioning and dissolution) over time. In a 5-year longitudinal study (from 2007 to 2012), adults (N = 485) who were in opposite-sex relationships and moved in with their partner were surveyed on their reasons for cohabitation (closest in time to moving in together) and their relationship status and functioning (in up to 11 waves of surveys). Results showed that greater endorsement of cohabiting to spend time together predicted better overall relationship functioning after cohabiting. Greater endorsement of testing the relationship predicted worse overall relationship functioning and a higher likelihood of relationship dissolution after cohabiting. Moving in together out of convenience did not predict postcohabitation relationship outcomes. The three reasons did not predict overtime trajectories (i.e., slopes) of relationship functioning. Instead, people showed similar trajectories of relationship functioning after moving in together regardless of their reasons for cohabitation, albeit at different levels that were differentiated at the time of moving in together. Reasons for cohabitation appear to reflect preexisting relationship quality, instead of impacting its postcohabitation trajectories. Findings highlight the importance of couples discussing their reasons for cohabitation when making decisions about moving in together.

[Key words] cohabitation; reasons; breakup; longitudinal; relationship functioning

論文原文：Chapman, Claire L. Liu, Daphne Y. Stanley, Scott M. Rhoades, Galena K (2026). Thinking about moving in together? Reasons for cohabitation are associated with relationship outcomes over time. Couple and Family Psychology: Research and Practice, Volume 15, Issue 2, Pages 138–151. June 2026.

https://doi.org/10.1037/cfp0000286

（翻譯兼責任編輯：MARY）

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