The Influence of Indonesian Language Literacy and Self-Confidence on the Sales Communication Skills of Students in the Retail Business and Management Program
DOI:
https://doi.org/10.59211/mjpjetl.v4i1.330Keywords:
Indonesian language literacy, self-confidence, sales communication, vocational education, retail managementAbstract
This study aims to analyze the influence of Indonesian language literacy and self-confidence on the sales communication skills of students in the Retail Business and Management Program. The primary issue addressed is the importance of strengthening the sales communication competencies of vocational students, which are determined not only by language proficiency but also by the psychological factor of self-confidence. This study employed a quantitative approach using a correlational-predictive research design. The sample consisted of 100 students enrolled in the Retail Business and Management Program. Data were collected through an Indonesian language literacy test, a self-confidence questionnaire, and a sales communication skills assessment instrument. Data were analyzed using descriptive statistics, Pearson correlation, and multiple linear regression with the assistance of statistical software. The findings indicate that the students' Indonesian language literacy was categorized as high, with a mean score of 78.64, while the mean scores for self-confidence and sales communication skills were 80.12 and 81.36, respectively. The correlation analysis revealed that Indonesian language literacy was positively and significantly associated with sales communication skills (r = 0.621), whereas self-confidence also demonstrated a positive and significant relationship with sales communication skills (r = 0.688). The multiple regression analysis showed that Indonesian language literacy and self-confidence simultaneously exerted a significant influence on sales communication skills (F = 70.12, p < 0.001, R² = 0.591). Partially, self-confidence emerged as the most dominant predictor, with a standardized beta coefficient of 0.519. This study concludes that strengthening Indonesian language literacy and self-confidence is essential for improving the sales communication skills of students in retail vocational education.
Downloads
References
[1] Abdullah, Y. B., & Arsanti, M. (2024). Pentingnya pendidikan literasi Bahasa Indonesia yang berorientasi pada keterampilan komunikasi. ARIMA: Jurnal Sosial dan Humaniora, 2(1), 173–178. DOI: 10.62017/arima.
[2] Ananda, Z. R. R., Buulolo, Y., Nasution, F. M., Tampubolon, R. S., & Handayani, D. (2026). Pengaruh teknologi digital terhadap literasi Bahasa Indonesia. RIGGS: Journal of Artificial Intelligence and Digital Business, 4(4), 11536–11543. DOI: 10.31004/riggs.v4i4.5181.
[3] Koponen, J., Julkunen, S., Laajalahti, A., Turunen, M., & Spitzberg, B. (2025). Sales managers’ perceptions of interpersonal communication competence in leading AI-integrated sales teams. Industrial Marketing Management, 124, 57–72. DOI: 10.1016/j.indmarman.2024.11.012.
[4] Natania, L., & Roswiyani, R. (2023). Hubungan kepercayaan diri dengan komunikasi interpersonal pada mahasiswa rantau. Jurnal Ilmiah Wahana Pendidikan, 9(24), 378–387. DOI: 10.5281/zenodo.10432337.
[5] Nugraha, H. D., Kencanasari, R. A. V., Komari, R. N., & Kasda, K. (2020). Employability skills in Technical Vocational Education and Training (TVET). INVOTEC, 16(1), 1–10. DOI: 10.17509/invotec.v16i1.23509.
[6] Rahmadan, R., et al. (2025). Konstruksi literasi Bahasa Indonesia dalam mengembangkan kemampuan berpikir kritis mahasiswa. Indo-MathEdu Intellectuals Journal, 6(7), 10820–10827. DOI: 10.54373/imeij.v6i7.4507.
[7] Sakam, S. Z. M., Jamaluddin, R., & Wahat, N. W. A. (2022). Inculcation of employability skills in technical and vocational education: The knowledge of employability skills and teaching practices. International Journal of Academic Research in Business and Social Sciences, 12(12), 1837–1849. DOI: 10.6007/IJARBSS/v12-i12/15738.
[8] Salahuddin, J., & Kabul, E. R. (2026). Integrating management fundamentals, business communication, and negotiation skills to foster collaborative business competencies. Greenation International Journal of Tourism and Management, 4(1), 1–11. DOI: 10.38035/gijtm.v4i1.713.
[9] Shaleha, A., Mukrim, M., Lebagi, D., & Hasyim, Z. (2025). The influence of self-confidence on students’ speaking ability: A correlational study at MA Nurul Muttahidah Pinotu. Journal of English Language and Education, 10(4). DOI: 10.31004/jele.v10i4.927.
[10] Sutiyono, S., Suherman, S., & Burmansah, B. (2023). The effect of self-concept and self-confidence on students’ interpersonal communication of Buddhist college. Al Qalam: Jurnal Ilmiah Keagamaan dan Kemasyarakatan, 17(6). DOI: 10.35931/aq.v17i6.2851.
[11] Wuryanti, S. T., & Suharto, A. W. B. (2025). Social media’s impact on Indonesian language literacy among SDN 1 Purbalingga Lor students. IJLHE: International Journal of Language, Humanities, and Education, 8(2), 413–424. DOI: 10.52217/ijlhe.v8i2.1853.
[12] Febriana, C., & Fikri, H. (2024). The role of increasing Indonesian literacy in building effective communication skills in the digital era. Jurnal Pendidikan Indonesia, 2(02), 134–141. https://doi.org/10.58471/ju-pendi.v2i02.476
[14] Islamia, I., & Arif, A. R. (2024). Assessing digital literacy skills among Indonesian university students in the age of Society 5.0. Jurnal Educative: Journal of Educational Studies, 9(2), 182–194. https://doi.org/10.30983/educative.v9i2.8678
[15] Izah, S. C., Sylva, L., & Hait, M. (2024). Cronbach’s alpha: A cornerstone in ensuring reliability and validity in environmental health assessment. ES Energy & Environment, 23, 1057. https://doi.org/10.30919/esee1057
[16] Koponen, J., Julkunen, S., Laajalahti, A., Turunen, M., & Spitzberg, B. (2025). Sales managers’ perceptions of interpersonal communication competence in leading AI-integrated sales teams. Industrial Marketing Management, 124, 57–72. https://doi.org/10.1016/j.indmarman.2024.11.012
[17] Lubis, U. S., Wulandari, N., Wahyudi, I., Widiyanto, A., Wibowo, E. A., Hakim, L., Apriyansyah, B., Hardiati, N., Swastika, A. Y., & Meyzia, B. (2025). Digital marketing strategies in expanding the market for MSME creative products in Indonesia—State of art. Frontiers in Communication, 10, 1647391. https://doi.org/10.3389/fcomm.2025.1647391
[18] Memon, M. A., Ting, H., Cheah, J. H., Thurasamy, R., Chuah, F., & Cham, T. H. (2020). Sample size for survey research: Review and recommendations. Journal of Applied Structural Equation Modeling, 4(2), i–xx. https://doi.org/10.47263/JASEM.4(2)01
[19] Olsen, A. A., Wolcott, M. D., Haines, S. T., Janke, K. K., & McLaughlin, J. E. (2020). How to use multiple linear regression. Currents in Pharmacy Teaching and Learning, 12(6), 692–698. https://doi.org/10.1016/j.cptl.2020.01.018
[20] Sulyati, E., & Kuswara, K. (2025). Leveraging digital literacy for Indonesian language learning: Strategies to enhance high school students’ writing skills—Opportunities and obstacles. AL-ISHLAH: Jurnal Pendidikan, 17(2). https://doi.org/10.35445/alishlah.v17i2.5727
[21] Wulandari, N., Suranto, S., Wijayanti, S., Untari, I., Kailani, A., & Rafidiyah, D. (2023). The impact of the Merdeka Belajar–Kampus Merdeka (MBKM) program in improving student competence. Jurnal Ilmiah Kampus Mengajar, 3(2), 146–162. https://doi.org/10.56972/jikm.v3i2.133
[22] Febriana, C., & Fikri, H. (2024). The role of increasing Indonesian literacy in building effective communication skills in the digital era. Jurnal Pendidikan Indonesia, 2(2), 134–141. https://doi.org/10.58471/ju-pendi.v2i02.476
[23] Natania, L., & Roswiyani, R. (2023). Hubungan kepercayaan diri dengan komunikasi interpersonal pada mahasiswa rantau. Jurnal Ilmiah Wahana Pendidikan, 9(24), 378–387. https://doi.org/10.5281/zenodo.10432337
[24] Nugraha, H. D., Kencanasari, R. A. V., Komari, R. N., & Kasda, K. (2020). Employability skills in Technical Vocational Education and Training (TVET). INVOTEC, 16(1), 1–10. https://doi.org/10.17509/invotec.v16i1.23509
[25] Shaleha, A., Mukrim, M., Lebagi, D., & Hasyim, Z. (2025). The influence of self-confidence on students’ speaking ability: A correlational study at MA Nurul Muttahidah Pinotu. Journal of English Language and Education, 10(4), 416–421. https://doi.org/10.31004/jele.v10i4.927
[26] Sutiyono, S., Suherman, S., & Burmansah, B. (2023). The effect of self-concept and self-confidence on students’ interpersonal communication of Buddhist college. Al Qalam: Jurnal Ilmiah Keagamaan dan Kemasyarakatan, 17(6). https://doi.org/10.35931/aq.v17i6.2851
Downloads
Published
Issue
Section
URN
License
Copyright (c) 2026 Novita Wulandari, Adi Nurhadi
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Authors grant the journal the right of first publication. which permits unrestricted use, distribution, and reproduction in any medium, provided that the original work is properly cited. Authors are responsible for ensuring that any third-party materials included in their work have proper permissions.
Comments
Comments are checked by the editorial team before they appear. Keep to the article's content; personal attacks, advertising and spam are removed.
Write a comment
Please log in to comment. Log in