<![CDATA[Abstract. New migrant college students face a transitional phase requiring simultaneous academic, social, and emotional adjustment. Separation from family and their home environment reduces routine social support, increasing vulnerability to loneliness, which in turn affects psychological well-being. However, not all students with high loneliness levels experience an equivalent decline in psychological well-being; some remain psychologically resilient, indicating other factors that strengthen or weaken this relationship. This study examines the role of perceived social support as a moderator in the effect of loneliness on psychological well-being among new migrant college students in Bandung City. This research uses a quantitative approach with a causal-moderation design. A total of 385 respondents were selected through convenience sampling. Measurements used the UCLA Loneliness Scale (Russell, 1996), the Ryff Psychological Well-Being Short Scale (Ryff, 1989), and the Multidimensional Scale of Perceived Social Support (Zimet et al., 1988). Data were analyzed using SEM-PLS via SmartPLS 4. Results show loneliness significantly affects psychological well-being (β = -0.437; p < 0.001), perceived social support significantly affects psychological well-being (β = 0.510; p < 0.001), and perceived social support was found to significantly to moderate by weakening the influence of loneliness on psychological well-being (β = -0.085; p = 0.008). Abstrak. Mahasiswa baru perantau menghadapi fase transisi yang menuntut penyesuaian akademik, sosial, dan emosional secara bersamaan. Keterpisahan dari keluarga dan lingkungan asal mengurangi dukungan sosial rutin sehingga meningkatkan kerentanan terhadap loneliness, yang berdampak pada rendahnya psychological well-being. Namun, tidak semua mahasiswa dengan loneliness tinggi mengalami penurunan psychological well-being yang setara, sebagian tetap mampu bertahan secara psikologis, mengindikasikan adanya faktor lain yang memperkuat atau memperlemah hubungan tersebut. Penelitian ini bertujuan menguji peran perceived social support sebagai moderator dalam pengaruh loneliness terhadap psychological well-being pada mahasiswa baru perantau di Kota Bandung. Penelitian menggunakan pendekatan kuantitatif dengan desain kausalitas-moderasi. Sebanyak 385 responden dipilih melalui convenience sampling. Pengukuran menggunakan UCLA Loneliness Scale (Russell, 1996), Ryff Psychological Well-Being Short Scale (Ryff, 1989), dan Multidimensional Scale of Perceived Social Support (Zimet et al., 1988). Analisis data menggunakan SEM-PLS melalui SmartPLS 4. Hasil menunjukkan loneliness berpengaruh signifikan terhadap psychological well-being (β = -0,437; p < 0,001), perceived social support berpengaruh signifikan terhadap psychological well-being (β = 0,510; p < 0,001), serta perceived social support terbukti signifikan memoderasi dengan memperlemah pengaruh loneliness terhadap psychological well-being (β = -0,085; p = 0,008).]]>
