TAZKIYA (Jurnal of Psychology) DOI: http://dx.doi.org/10.15408/tazkiya.v11i1.31305 http://journal.uinjkt.ac.id/index.php/tazkiya TAZKIYA (Journal of Psychology), p-ISSN: 2829-4904, e-ISSN: 2654-7244 This is an open-access article under CC-BY-SA license (https://creativecommons.org/licenses/by- sa/4.0/) The Influence of Coping Strategy, Loneliness, and Sleep Quality on Student’s Depression During Covid-19 Pandemic Yufi Adriani 1 , Audia Ayu Ramadhanti 2 , Worawach Tungjitcharoen 3 Faculty of Psychology, UIN Syarif Hidayatullah Jakarta, Indonesia 1, 2 Department of Psychology, Thammasat University, Thailand 3 yufi.adriani@uinjkt.ac.id Abstract This study aims to examine the effect of the variable coping strategy, loneliness, and sleep quality on symptoms of depression in college students during the Covid-19 pandemic. The authors hypothesized that coping strategy, loneliness, and sleep quality had significant effects on symptoms of depression in students during the Covid-19 pandemic. The population in this study was students who domiciled in Greater Jakarta and were undergoing online lectures during the Covid-19 pandemic. A sample of 203 students were recruited using purposive sampling. The measuring instrument consisted of the Beck Depression Inventory-II scale, The Brief COPE scale, the De Jong Gierveld Loneliness Scale, and The Pittsburgh Sleep Quality Index scale. We tested the validity of the instrument using the Confirmatory Factor Analysis (CFA) technique. The data were analyzed using multiple regression techniques. The results of hypothesis testing indicated that four variables, namely problem-focused coping, emotional loneliness, social loneliness, and sleep quality, significantly influenced symptoms of depression. This study's results showed significant effects of coping strategy, loneliness, and sleep quality on depression symptoms in college students during the Covid-19 pandemic, 52.3%. Meanwhile, avoidant, emotion- focused, and socially-supported coping did not significantly affect students' depression symptoms during the Covid-19 pandemic. Keywords: college students, coping strategy, covid-19 pandemic, depression, loneliness, sleep quality Abstrak Penelitian ini bertujuan untuk menguji pengaruh variabel coping strategy, loneliness, dan kualitas tidur terhadap gejala depresi pada mahasiswa selama pandemi Covid-19. Penulis berhipotesis bahwa terdapat pengaruh yang signifikan coping strategy, loneliness, dan kualitas tidur terhadap gejala depresi mahasiswa di masa pandemi Covid-19. Populasi dalam penelitian ini adalah 203 mahasiswa/i aktif berdomisili di Jabodetabek yang sedang menjalani perkuliahan daring selama masa pandemi Covid-19. Sampel diambil menggunakan teknik non-probability sampling yaitu purposive sampling. Penulis memodifikasi alat ukur yang terdiri dari skala Beck Depression Inventory-II, skala The Brief COPE, skala De Jong Gierveld Loneliness Scale, dan skala The Pittsburgh Sleep Quality Index. Uji validitas alat ukur menggunakan teknik Confirmatory Factor Analysis (CFA). Analisis data menggunakan teknik regresi berganda. Hasil penelitian ini menunjukkan bahwa ada pengaruh signifikan coping strategy, loneliness, dan kualitas tidur terhadap gejala depresi pada mahasiswa selama pandemi Covid-19 sebesar 52.3%. Hasil uji hipotesis menunjukkan terdapat empat variabel memiliki pengaruh signifikan terhadap gejala depresi, yaitu problem-focused coping, emotional loneliness, social loneliness, dan kualitas tidur. Sementara avoidant coping, emotion-focused coping, dan socially-supported coping tidak memiliki pengaruh yang signifikan terhadap gejala depresi mahasiswa di masa pandemi Covid-19. Kata kunci: coping strategy, depresi, kualitas tidur, loneliness, mahasiswa, pandemi covid-19