Perilaku asertif menjadi salah satu keterampilan yang perlu diterapkan oleh mahasiswa. Social Skills Training (SST) adalah salah satu upaya yang dilakukan oleh Prodi Ilmu Kesejahteraan Sosial, Fakultas Ilmu Sosial dan Ilmu Politik, Universitas Indonesia untuk meningkatkan perilaku asertif pada Mahasiswa Ilmu Kesejahteraan Sosial. Dalam Social Skills Training (SST) tersebut, terdapat pengenalan mengenai self-esteem dan penerimaan sosial mahasiswa sebagai upaya meningkatkan perilaku asertif. Sementara itu, berdasarkan teori, hubungan penerimaan sosial, perilaku asertif, dan self-esteem memiliki hubungan yang berjenjang di mana penerimaan sosial memengaruhi self-esteem kemudian self-esteem memengaruhi perilaku asertif. Dari hal tersebut, penelitian ini bertujuan untuk mengetahui hubungan penerimaan sosial terhadap perilaku asertif mahasiswa dengan self-esteem sebagai variabel antara. Penelitian menggunakan pendekatan penelitian kuantitatif dengan jenis penelitian survei dan instrumen berupa kuesioner. Penelitian cross-sectional ini dilakukan pada bulan Februari sampai dengan April 2023 secara online melalui Google formulir. Responden dalam penelitian ini adalah 83 Mahasiswa Ilmu Kesejahteraan Sosial, Fakultas Ilmu Sosial dan Ilmu Politik, Universitas Indonesia angkatan 2019-2022 yang diambil dengan menggunakan teknik simple random probability sampling. Data penelitian dengan uji korelasi Kendall’s tau-b dan metode analisis jalur (path analysis) menunjukkan bahwa nilai hubungan penerimaan sosial dengan perilaku asertif tanpa adanya variabel antara lebih besar, yaitu sebesar 0,468 dibandingkan nilai hubungan dengan adanya self-esteem sebagai variabel antara, yaitu sebesar 0,078. Hasil tersebut berarti bahwa penerimaan sosial memiliki hubungan terhadap perilaku asertif secara langsung bagi mahasiswa Prodi Ilmu Kesejahteraan Sosial, Fakultas Ilmu Sosial dan Ilmu Politik, Universitas Indonesia angkatan 2019-2022. Selain itu, didapat juga hasil yang menunjukkan bahwa terdapat hubungan antara self-esteem dengan perilaku asertif, yaitu sebesar 0,369. Dari hasil tersebut, dapat disimpulkan bahwa pelaksanaan Social Skills Training (SST) sudah tepat sasaran dan Social Skills Training (SST) penting untuk diikuti oleh mahasiswa.  

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Assertive behavior is one of the skills that students need to apply. Social Skills Training (SST) is one of the efforts made by the Department of Social Welfare, Faculty of Social and Political Sciences, University of Indonesia to increase assertive behavior in Social Welfare College Students. In the Social Skills Training (SST), there is an introduction to self-esteem and social acceptance of students as an effort to increase assertive behavior. Meanwhile, based on theory, the relationship between social acceptance, assertive behavior, and self-esteem has a tiered relationship where social acceptance influences self-esteem and then self-esteem influences assertive behavior. Therefore, this study aims to determine the relationship of social acceptance of assertive behavior of students with self-esteem as an intervening variable. The study uses a quantitative research approach with a survey research type and questionnaire as an instrument. This cross-sectional research study was conducted online from February to April 2023 via the Google form. Respondents in this study were 83 Social Welfare College Students, Faculty of Social and Political Sciences, University of Indonesia class of 2019-2022 who were taken using the simple random probability sampling technique. The results of the study using the Kendall's tau-b correlation test and the path analysis method show that the value of the link between social acceptance and assertive behavior without an intervening variable was 0,468, while the value of the relationship with self-esteem as an intervening variable was 0,078. These results mean that social acceptance has a direct relationship to assertive behavior for students of the Social Welfare Study Program, Faculty of Social and Political Sciences, University of Indonesia class of 2019-2022. In addition, the results also show that there is a relationship between self-esteem and assertive behavior, which is equal to 0,369. From these results, it can be concluded that the implementation of Social Skills Training (SST) is right on target and Social Skills Training (SST) is important for students to participate in.