RAMADHAN, FADYA SHAFINA NOOR (2026) BERTAHAN ATAU BERPISAH: RELASI KETAKUTAN UNTUK SENDIRIAN DAN INTERPERSONAL SUNK COST. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
This study is motivated by the phenomenon that many young adults choose toremain in unhealthy romantic relationships despite experiencing recurring conflicts, emotional dissatisfaction, or unsupportive partner behaviors. This tendency is oftenobserved among individuals who are aware that their relationships no longer providepsychological well-being but feel reluctant to end them due to fear of being alone andconsideration of the investments they have made throughout the relationship. Accordingly, this study aims to examine the relationship between fear of being singleand interpersonal sunk cost in predicting individuals’ tendencies to remain inunhealthy romantic relationships. Fear of being single is defined as an individual’sanxiety or fear regarding the possibility of living without a romantic partner, whereasinterpersonal sunk cost refers to the tendency to continue a relationship due to past investments of time, effort, and emotional resources. This research employed a quantitative approach using a correlational design. The population consisted of young adults aged 20–25 years who were currently orpreviously involved in romantic relationships. Sample size determination wasconducted through power analysis using G*Power version 3.1.9.7, indicating aminimum requirement of 115 participants to achieve 95% statistical power at a 5%significance level. In practice, data were collected from 160 respondents usingpurposive sampling based on predefined criteria. Data were obtained through the Fear of Being Single Scale developed bySpielmann et al. (2013), which had undergone cultural adaptation, and theInterpersonal Sunk Cost Scale constructed by the researcher based on Olivola’s (2018)conceptual framework. Data analysis was performed using IBM SPSS Statisticsversion 25, including classical assumption tests and Pearson Product–Moment correlation analysis. The results indicated that both instruments demonstrated goodreliability (Cronbach’s Alpha = 0.864 for fear of being single and 0.654 forinterpersonal sunk cost). Furthermore, a significant positive correlation was foundbetween fear of being single and interpersonal sunk cost (r = 0.537, p < 0.001), suggesting that stronger attachment to past relational investments is associated withgreater fear of being alone. These findings indicate that decisions to remain inunsatisfying romantic relationships are influenced not only by cognitiveconsiderations but also by emotional factors rooted in the need for social attachment. Keywords: fear of being single, interpersonal sunk cost, unhealthy romanticrelationships, young adults, correlation analysis. Penelitian ini dilatarbelakangi oleh fenomena masih banyaknya individudewasa muda yang memilih bertahan dalam hubungan romantis yang tidak sehat, meskipun hubungan tersebut ditandai oleh konflik berulang, ketidakpuasan emosional, serta perilaku pasangan yang kurang suportif. Kondisi ini sering terjadi pada individuyang telah menyadari bahwa hubungan yang dijalani tidak lagi memberikankesejahteraan psikologis, namun tetap enggan mengakhirinya karena adanyaketakutan menghadapi kesendirian dan pertimbangan terhadap berbagai investasi yang telah diberikan selama menjalin hubungan. Berdasarkan fenomena tersebut, penelitian ini bertujuan untuk mengetahui hubungan fear of being singledaninterpersonal sunk cost terhadap kecenderungan individu untuk bertahan dalamhubungan romantis yang tidak sehat. Fear of being single didefinisikan sebagai bentuk ketakutan atau kecemasan terhadap kemungkinan hidup tanpa pasangan, sedangkan interpersonal sunk cost merujuk pada kecenderungan individu untuk terusmempertahankan hubungan karena investasi waktu, tenaga, dan emosi yang telahdikeluarkan di masa lalu. Penelitian ini menggunakan pendekatan kuantitatif dengan metodekorelasional. Populasi penelitian mencakup individu dewasa muda berusia 20–25tahun yang sedang atau pernah menjalin hubungan romantis. Ukuran sampel ditentukan melalui power analysis menggunakan G*Power versi 3.1.9.7 dengankebutuhan minimal 115 responden untuk mencapai kekuatan uji 95% pada tarafsignifikansi 5%, dan dalam pelaksanaannya melibatkan 160 responden. Teknikpengambilan sampel menggunakan purposive sampling sesuai karakteristik populasi. Pengumpulan data dilakukan menggunakan Fear of Being Single Scaledari Spielmann et al. (2013) yang telah diadaptasi secara budaya serta Interpersonal SunkCost Scale yang disusun berdasarkan konsep Olivola (2018). Analisis datamenggunakan IBM SPSS Statistics versi 25 dengan uji asumsi klasik dan korelasi Pearson Product Moment. Hasil penelitian menunjukkan reliabilitas instrumen yangbaik (α = 0,864 dan 0,654) serta adanya hubungan positif yang signifikan antarafearof being single dan interpersonal sunk cost (r = 0,537; p = 0,000), yangmengindikasikan bahwa keputusan bertahan dalam hubungan tidak sehat dipengaruhi oleh interaksi antara faktor kognitif dan emosional yang berkaitan dengan kebutuhanakan keterikatan sosial. Kata kunci: fear of being single, interpersonal sunk cost, hubungan romantis tidaksehat, dewasa muda, analisis korelasi.
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