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Didit Setiawan

Jurnal Riset Rumpun Ilmu Kesehatan 2026 Pusat riset dan Inovasi Nasional

Patient safety is often viewed exclusively as the responsibility of clinical personnel. However, administrative errors occurring during the admission process and documentation stages constitute major contributors to medical risk. This study aims to explore the strategic role of administrative staff in strengthening patient safety culture and mitigating medical risks through effective communication coordination. A narrative literature review was conducted extensively using the Scopus, PubMed, and Web of Science databases, covering publications from 2014 to 2024. Data were analyzed using a thematic synthesis approach. The findings identify four main themes: administrative staff as information gatekeepers, the role of health information technologies (HIS/EMR) in bridging communication gaps, collaboration barriers arising from hierarchical structures, and the need for an Interprofessional Shared Governance framework. Administrative accuracy in the early phases of care is proven to be critical in preventing latent errors with potentially fatal consequences. Strengthening patient safety culture requires the integration of administrative staff through cross-departmental training, standardized communication protocols, and non-punitive incident reporting systems. Administrative staff are not merely bureaucratic support personnel but are key actors within the modern hospital patient safety ecosystem.

Muhammad Azy Rahmanda Lubis; Fadhila Isfa; Nurkomaria Nurkomaria; Azhela Dwi Aryani; Ramadhan Nasution

Nusantara: Jurnal Pengabdian kepada Masyarakat 2026 Pusat Riset dan Inovasi Nasional

This study examines the utilization of social media in improving the competitiveness of cassava chips and lidah manis SMEs in Pematang Serai Village, Tanjung Pura District, Langkat Regency, North Sumatra Province. The rapid development of information technology has encouraged SMEs to shift from conventional marketing methods to more effective and efficient digital marketing practices. This research employs a descriptive qualitative approach, with data collected through field observations, in-depth interviews, and documentation involving SME actors. The results indicate that the use of social media platforms such as WhatsApp, Facebook, and Instagram is able to expand market reach, increase product visibility, and strengthen relationships between business owners and consumers. Attractive promotional content, consistency in posting, and responsive communication are proven to influence consumer buying interest and trust. However, SMEs still face challenges, including limited digital literacy, time management constraints, and the lack of structured marketing strategies. Therefore, continuous training and assistance are needed so that SMEs can optimize the use of social media more effectively. This study is expected to serve as a reference for the development of digital-based SMEs in rural areas.

Nyolanda Wulandari Koto; Ainul Mardiyah; Mutiara Permata Hati Br. Sinaga; Fahmi Irawan

Jurnal Pengabdian Sosial dan Kemanusiaan 2026 Lembaga Pengembangan Kinerja Dosen

This study employed a descriptive qualitative approach using a case study design to explore the psychological impacts of traffic accidents on victims. Data were collected through semi-structured interviews and direct observation, then analyzed using thematic analysis techniques. The findings indicate that the main trauma-related symptoms include intense negative thoughts or emotions, such as sudden fear, nausea, and mood changes characterized by increased sadness and irritability. Additionally, sleep disturbances were observed, including vivid nightmares, flashbacks when attempting to sleep, and physical reactions such as heart palpitations. Avoidance behaviors were also noted, such as avoiding the accident location, rarely leaving the house, and avoiding conversations related to the accident. Traffic accidents are sudden, unexpected events that can cause not only physical injuries but also profound psychological impacts, including fear, excessive anxiety, nightmares, and symptoms of post-traumatic stress disorder (PTSD). If left untreated, these psychological disorders may interfere with daily functioning and significantly reduce the quality of life of the victims, making early intervention crucial for recovery.

Najwa Dwi Aprillia; Nursyamsiah Simbolon; Putri Amelia; Dea Miftahul Jannah; Homsani Nasution

Akhlak : Jurnal Pendidikan Agama Islam dan Filsafat 2026 Asosiasi Riset Ilmu Pendidikan Agama dan Filsafat Indonesia

Early childhood development screening is an important effort to ensure optimal development during a child's golden age, which includes physical, motor, language, cognitive, and socio-emotional aspects. Early Childhood Education (PAUD) teachers play a key role in implementing early detection, given their intensive interaction with children during learning activities. However, early detection in PAUD institutions faces challenges such as limited teacher competencies, non-standardized screening instruments, and suboptimal cross-sector collaboration. This study aims to examine the role of teachers in early childhood development screening at RA Arrahmah using a qualitative approach and case study. Data were collected through observations, in-depth interviews, and documentation with the head of RA and class teachers during October-November. The results show that teachers have carried out early detection in an integrated manner through continuous observations. However, the use of standardized screening instruments has not been optimal and still relies on informal observations. Major challenges include limited training, individual observation time, and the lack of a structured early detection program. This study concludes that strengthening teacher competencies, integrating early detection into institutional policies, and enhancing collaboration with parents and healthcare professionals are necessary to optimize early childhood development screening sustainably.

Lusi Aprilia; Aditya Liliyan

Jurnal Manajemen Kreatif dan Inovasi 2026 International Forum of Researchers and Lecturers

This study aims to analyze the effect of service quality and trust on members’ decisions to use the services of Koperasi Simpan Pinjam (KSP) Pamuji in the Soloraya region. Savings and loan cooperatives play an important role in providing financial access for the community; therefore, service quality and members’ trust are crucial factors in sustaining cooperative services. This research employs a quantitative approach with an explanatory research design. Data were collected through a structured online questionnaire distributed to 201 respondents selected using purposive sampling techniques. Data analysis was conducted using multiple linear regression with the assistance of SPSS version 27. The results indicate that service quality has a positive and significant effect on service usage decisions, as evidenced by a regression coefficient of 0.504 and a significance value below 0.05. Trust also shows a positive and significant effect on service usage decisions with a regression coefficient of 0.375. Simultaneously, service quality and trust explain 82.5% of the variation in service usage decisions. These findings confirm that positive service experiences and high levels of trust are key determinants in encouraging members to use cooperative savings and loan services. The results of this study are expected to provide practical insights for cooperative managers in formulating strategies to improve service quality and strengthen members’ trust in order to enhance sustainability and competitiveness.

Indri Kurniawati; Ebtana Sella Mayang Fitri; Ajie Wicaksono

Jurnal Pengabdian dan Keberlanjutan Masyarakat 2026 Lembaga Pengembangan Kinerja Dosen

Kampung Wisata Titik Nol in Central Java has significant potential for developing special-interest tourism, particularly nature-based and outdoor sport tourism. However, this potential has not been optimally utilized due to limited community capacity in designing structured and market-ready tourism products. This community service program aims to enhance the capacity of local tourism managers and youth organizations in packaging sustainable and competitive sport tourism packages. The program was conducted at Joglo Gumregah from August to November 2024 using a Participatory Action Research (PAR) approach. The implementation was carried out in three phases: preparation, implementation, and evaluation. The preparation phase included field observation, Focus Group Discussions (FGDs), and coordination with village authorities and community leaders. The implementation phase involved in-depth interviews and mentoring activities in developing sport tourism packages. The evaluation phase was conducted through interactive dialogues with stakeholders to refine the developed packages. The results indicate an improvement in participants’ understanding and skills in designing integrated and locally based sport tourism packages. The resulting packages are expected to serve as references for sport tourism development and to support community empowerment and economic sustainability in Kampung Wisata Titik Nol.

Rahman

Jurnal Praba : Jurnal Rumpun Kesehatan Umum 2026 STIKES Columbia Asia Medan

The work of health workers is a key factor in ensuring the quality and sustainability of primary health services. However, high work demands and limited resources have the potential to weaken work involvement if they are not balanced with a perception of work meaning and adequate psychological capacity. This study aims to analyze the effect of job meaningfulness on work engagement of health workers through psychological capital as a mediating variable at the Mokoau Health Center, Kendari City, Southeast Sulawesi. This study used a quantitative approach with a cross-sectional design. All health workers at the Mokoau Health Center as many as 70 people were used as research samples using the total sampling method. Data was collected through a structured questionnaire and analyzed using Partial Least Squares–Structural Equation Modeling (PLS-SEM) with the help of SmartPLS version 4.0. The results of the analysis showed that job meaningfulness had a positive and significant effect on psychological capital (β = 0.698; p < 0.05). Psychological capital was also shown to have a positive and significant effect on work engagement (β = 0.691; p < 0.05). Furthermore, job meaningfulness had a significant indirect effect on work engagement through psychological capital (β = 0.482; p < 0.05), which shows the mediating role of psychological capital in the relationship. Job meaningfulness not only contributes directly to strengthening psychological capital, but also indirectly increases work engagement of health workers. Psychological capital plays a role as the main psychological mechanism that translates the meaning of work into higher work attachment. These findings affirm the importance of a human resource management strategy that focuses on strengthening the meaning of work and psychological capital to increase the work involvement of health workers in primary health care facilities.

Putri Novitasari; Nori Anggraini

Jurnal Riset Rumpun Ilmu Pendidikan 2026 Lembaga Pengembangan Kinerja Dosen

This study examines the short story "Click that Kills" by Taufiqurohman to reveal the position of humans in the increasingly dominating digital algorithm environment. Using a descriptive qualitative approach that focuses on structural analysis and literary psychology based on Freud's psychoanalytic theory, this study thoroughly analyzes the intrinsic elements as well as the inner conflicts of the characters. The findings of this study show that the AIDA system poses a profound existential crisis, where individual freedom is threatened due to systemic information manipulation. The characters of Dito and Genta experience a serious conflict between id, ego, and superego when dealing with the figure of "Shadow User" who is a real symbol of the shift in human dignity through raw data. In terms of structure, the storyline conveys a deep social critique of the loss of human self-control in cyberspace. This research shows that this short story is a premonious criticism of the importance of maintaining the essence of humanity in the midst of the prevalence of mechanical algorithms. The phenomenon emphasizes that digital technology can potentially alienate the moral consciousness of individuals in modern society.

Irsyad Aldi Setyoaji; Nafik Salafiyah

Jurnal Riset Rumpun Seni, Desain dan Media 2026 Pusat Riset dan Inovasi Nasional

This research aims to analyze the adaptive role of a dance teacher in teaching the subject of music art at SMK Asta Mitra Purwodadi, as well as identifying the patterns of collaborative approaches and the implementation of the Deep Learning strategy in the learning process. This phenomenon attracts researchers due to the case of a teacher teaching cross-disciplinary subjects, although still within the domain of the arts. This study employs a qualitative method using observation, semi-structured interviews, and documentation techniques. The main subject of this research is Bu Evi, a dance teacher who also serves as the music art instructor. The research results indicate that the non-specialist teacher (with a dance background) successfully overcomes limitations in teaching music by performing a role transformation into a facilitator focusing on expression, rhythm, and performance. The implementation of Deep Learning is realized effectively through a kinesthetic approach, where abstract music concepts (such as tempo and dynamics) are translated through body movement exploration, which is proven to increase student enthusiasm and understanding. Furthermore, the teacher implements a strategic collaborative pattern with the music extracurricular teacher, where responsibilities are divided between aspects of expression/movement and the deepening of theory/vocal technique, ensuring talented students still receive adequate technical development. Assessment focuses on performative aspects (expression, tempo, teamwork, and self-confidence). This research concludes that the teacher's professionalism and pedagogical creativity are the main keys to bridging competency gaps, while simultaneously ensuring the achievement of the goals of the Merdeka Curriculum in shaping student character and 21st-century skills.

Gimnastiar, Alfin; Gading, Rafli Arya

Neptunus: Jurnal Ilmu Komputer Dan Teknologi Informasi 2026 Asosiasi Riset Teknik Elektro dan Informatika Indonesia

The management of borrowing and returning goods in government institutions is still largely carried out manually, which often gives rise to various problems, such as difficulties in tracking borrowing histories, the high risk of recording errors, and the lack of transparency regarding the availability of goods. This condition indicates the need for support from an information system that is capable of assisting the recording process and inventory management in a more structured, systematic, and easily monitored manner. This research aims to design a prototype of a goods borrowing and returning application as an initial solution to these problems as well as a preliminary representation of a system that can be further developed by the institution. The research method used is a Research and Development (R&D) approach with a prototype Software Development Life Cycle (SDLC) model, which allows system development to be carried out gradually and flexibly in accordance with user needs. Data collection was conducted through observation and interviews to obtain an overview of the ongoing work processes and to identify the required system needs. The collected data were then analyzed as the basis for designing the system workflow, data structure, and user interface design. The results of this research are in the form of an application prototype that represents the main system features, including goods borrowing, goods returning, availability checking, goods data management, and report generation.

Fenie Oktafiani Budi; Diniwati Mukhtar

Jurnal Riset Rumpun Ilmu Kesehatan 2026 Pusat riset dan Inovasi Nasional

The increasing use of digital devices among adolescents raises concerns regarding eye health, particularly myopia. Non-ergonomic postures, such as using gadgets in a lying position, may increase accommodative stress on the eyes and contribute to visual impairment. To analyze the association between the duration and viewing distance of gadget use in a lying position and the occurrence of myopia among eighth-grade students at SMPN 119 Central Jakarta. An observational analytic study with a cross-sectional design was conducted involving 74 eighth-grade students. Data on gadget use habits, including duration and viewing distance, were collected using a structured questionnaire. Visual acuity was assessed using a Snellen chart. Bivariate analysis was performed using the Chi-square test with a significance level of p < 0.05. Decreased visual acuity was found in 62.2% of respondents. There was no significant association between viewing distance and myopia (p = 0.080). However, a significant association was identified between gadget use duration exceeding two hours per day and the occurrence of myopia (p = 0.002). The duration of gadget use in a lying position was significantly associated with myopia, whereas viewing distance was not. Limiting the duration of gadget use may help prevent visual impairment among adolescents.

Ni Putu Artanti; Nyoman Intan Permatahati Wiguna; Ni Luh Putu Pranena Sastri

Jurnal Riset Rumpun Ilmu Kesehatan 2026 Pusat riset dan Inovasi Nasional

Academic stress has become a significant psychological issue among university students, particularly during periods of high academic pressure such as examinations, intensive coursework, and academic performance demands. Excessive academic stress may negatively affect students’ psychological well-being, learning motivation, and academic performance. This study aims to explore in depth the experiences of academic stress and psychological responses among students during periods of high academic pressure. A qualitative descriptive approach with a phenomenological perspective was employed to capture students’ lived experiences. Data were collected through in-depth semi-structured interviews with six student participants selected using purposive sampling. The data were analyzed using thematic analysis, involving open, axial, and selective coding to identify emerging themes. The findings reveal that the main sources of academic stress include excessive academic workload, time management difficulties, high self-expectations, and external academic pressures. Students experienced varying levels of stress ranging from mild to severe, manifested through psychological responses such as anxiety, emotional instability, mental fatigue, decreased concentration, and reduced motivation. The study also found that students applied diverse coping strategies, including adaptive strategies such as time management, seeking social support, and self-reflection, as well as maladaptive strategies such as procrastination and emotional withdrawal. These findings highlight that academic stress is a complex and subjective experience influenced by individual perceptions and coping capacities. The study implies the importance of supportive academic environments and accessible mental health services in higher education institutions to promote students’ psychological well-being and resilience. The results may serve as a reference for developing preventive and promotive mental health programs for students facing academic stress..    

Nur Mulia; Hafni Zahara; Mansura Feby Amanda

Jurnal Riset Rumpun Ilmu Kesehatan 2026 Pusat riset dan Inovasi Nasional

Elderly exercise is a sporting activity that can help improve heart health, maintain stable blood pressure and blood sugar levels, and prevent various degenerative diseases in the elderly. Abnormal blood sugar levels can cause metabolic disorders that lead to various serious health problems. This study aims to determine the impact of elderly exercise on improving the health and independence of older adults in carrying out daily activities. This study used an evaluative method with a cross-sectional approach at the Nibong Community Health Center, North Aceh, involving 38 elderly people (14 men and 24 women) as a sample. The results showed that after participating in regular exercise, the number of elderly people with high blood sugar levels decreased to 31.6%, while the number of elderly people with normal blood sugar levels increased to 86.6%. Statistical tests showed a significant difference between blood sugar levels before and after exercise (p < 0.05). From these results, it can be concluded that elderly exercise is effective in lowering blood sugar levels, increasing insulin sensitivity, improving fitness and balance, and motivating elderly people to maintain their health. It is recommended that the Nibong Community Health Center regularly hold structured elderly exercise programs and provide educational counseling on the importance of a healthy lifestyle and controlling sugar intake. The results of this study can serve as a reference for health institutions and further research

Dina Rohima; M. Yunus Abu Bakar; Oktavia Ratnaningtyas

jurnal Riset Rumpun Agama dan Filsafat 2026 Pusat Riset dan Inovasi Nasional

This study is entitled Nahwu and Shorof as Sciences in the Ontological Perspective within the Realm of Philosophy. The purpose of this research is to examine the essence of nahwu and shorof not merely as technical tools for understanding the Arabic language, but also as scientific entities that possess ontological dimensions in philosophy. Nahwu is understood as the science that regulates the arrangement of words within sentences, while shorof functions to form and transform words according to specific patterns. From an ontological perspective, both are not simply linguistic instruments, but rather representations of the structure and form of linguistic reality that reflect the orderliness of human thought. The analysis demonstrates that nahwu and shorof play a fundamental role in preserving the integrity of meaning in Arabic texts, while also serving as a means to comprehend the essence of language as a living and dynamic entity. Thus, nahwu and shorof can be regarded not only as practical sciences in language learning, but also as philosophical disciplines within the ontology of knowledge, revealing the essence of form and structure of language in relation to human and societal reality.

Paridah; Hartati Bahar; Ruslan Majid; Afifa Yunizah; La Ode Muh. Alief Mahabbah

Jurnal Praba : Jurnal Rumpun Kesehatan Umum 2026 STIKES Columbia Asia Medan

Access to healthcare services is a crucial determinant in improving community health, particularly in rural areas that face geographic and social challenges. This study aims to describe the accessibility and utilization of healthcare services among residents of Desa Sama Subur, Kecamatan Motui, Kabupaten Konawe Utara. A descriptive quantitative design was employed, with the population comprising all active household heads in the village. A total of 45 household heads were selected using total sampling. Data were collected through face-to-face interviews using structured questionnaires during the 2025 Field Learning Experience (Pengalaman Belajar Lapangan, PBL). Descriptive analysis was conducted and results were presented in frequency distributions and percentages.The findings indicate that the majority of respondents possess health insurance (88.9%); however, the utilization of healthcare facilities remains suboptimal, with only 48.9% having ever accessed services. Perceptions of healthcare accessibility varied, with 51.1% considering it easy and 46.7% reporting difficulty. Motorcycles were the most commonly used mode of transportation (77.8%), and community health centers (Puskesmas) were the most frequently utilized facilities (60.0%). Regarding service satisfaction, nursing staff behavior received the highest satisfaction rating (28.9%), while waiting time remained the main concern. In conclusion, healthcare access in rural communities is multidimensional, influenced not only by health insurance ownership but also by geographic factors, transportation availability, and service experience. Enhancing the utilization of healthcare services requires strengthening primary care and improving physical access to healthcare facilities.

Cici Permata; Willia Novita Eka Rini; Andree Aulia Rahmat; Hendra Dhermawan Sitanggang

Jurnal Riset Rumpun Ilmu Kesehatan 2026 Pusat riset dan Inovasi Nasional

Food safety is a crucial aspect of public health, particularly for elementary school children who frequently consume street food or snacks sold within school environments. Food handlers play a key role in determining the level of hygiene and sanitation of the food served. This study aims to analyze the factors associated with food handlers’ hygiene behavior in elementary school canteens in Telanaipura District, Jambi City. This research employed a quantitative method with a cross-sectional approach involving 41 food handlers as respondents. Data were collected through structured interviews using questionnaires and direct observations based on hygiene and food sanitation standards in accordance with the Regulation of the Minister of Health No. 1096/Menkes/PER/VI/2011. Data were analyzed using univariate and bivariate methods with the Chi-Square test at a significance level of p < 0.05. The results showed that most food handlers exhibited poor hygiene behavior (61.0%). There were significant relationships between knowledge (p = 0.048), attitude (p = 0.000), and availability of facilities and infrastructure (p = 0.000) with hygiene behavior, while education level showed no significant association (p = 0.187). It can be concluded that improving hygiene behavior requires continuous training, supervision, and provision of adequate sanitation facilities to support food safety in school environments.

Hendra Setiawan Nasution; Siti Khairani; Azhari Muda Tanjung; Parningotan Malau

Jurnal Riset Rumpun Ilmu Sosial, Politik dan Humaniora 2026 Pusat Riset dan Inovasi Nasional

This research explores the significant role of cultural institutions in overseeing and enforcing laws based on local wisdom in Indonesia, a nation characterized by its rich cultural diversity. The purpose of this study is to analyze how cultural institutions, particularly customary law bodies, can help integrate local traditions and values into the formal legal system, ensuring that laws are more reflective of and responsive to the diverse communities across the country. The study employs a normative approach with a prescriptive method to examine the challenges and opportunities of incorporating local wisdom into national law, particularly in the realm of legal oversight and dispute resolution. The research reveals that, despite constitutional recognition of customary law, its practical implementation within the national legal framework remains hindered by conflicts between customary norms and formal legal structures. Key findings suggest that strengthening the role of cultural institutions in legal processes can enhance both the legitimacy and effectiveness of the legal system, promoting social harmony and fostering justice that resonates with the local context. Ultimately, the study concludes that empowering cultural institutions is vital for creating a legal environment that respects and integrates local wisdom, which will contribute to a more inclusive, fair, and sustainable legal system in Indonesia.

Tiara Martha Lewinda Sitanggang; Ela Elia Silangit; Andar Gunawan Pasaribu

Sabar : Jurnal Pendidikan Agama Kristen dan Katolik 2026 Asosiasi Riset Ilmu Pendidikan Agama dan Filsafat Indonesia

The Scientific Writing course plays an important role in equipping students with academic skills, particularly in developing systematic and scientifically sound research methodology. This study aims to analyze the relationship between the Scientific Writing course and the research methodology writing skills of Group E Semester 3 students. The research method used is a quantitative method with a correlational approach. Data were collected through documentation and questionnaire techniques to measure mastery of the course material and students' ability to write research methodology. Data analysis was carried out using a correlation test to determine the level of relationship between variables. The results of the study indicate that there is a positive and significant relationship between the Scientific Writing course and students' research methodology writing skills. Students who have a good understanding of scientific writing materials tend to be able to develop research methodologies more systematically, logically, and in accordance with scientific principles. This finding confirms that the Scientific Writing course contributes significantly to improving students' academic competence, particularly in writing research methodology. This study is expected to be used as material for evaluating and developing scientific writing learning in higher education. The researcher distributed a questionnaire via Google Form consisting of 11 questions to group D students to obtain research results. The results of the study in the form of a questionnaire showed that 18 students (90%) felt a high level of satisfaction with the teaching of the Scientific Paper Writing course because it helped them understand the structure of research and how to write research methodology correctly and 2 students (10%) felt that it was just so-so.

Muhammad Yudha Ardiansyah; Cecep Castrawijaya

Jurnal Manajemen dan Pendidikan Agama Islam 2026 Asosiasi Riset Pendidikan Agama dan Filsafat Indonesia

This study examines the transformation of Islamic da'wah institutions in Indonesia through social entrepreneurship innovation, focusing on the Darunnajah Islamic Boarding School in Jakarta. The aim is to understand how the Islamic boarding school adapts to socio-economic changes without abandoning its da'wah values. This study uses a library research methodology, referring to Kurt Lewin's (1947) theory of change, which consists of three stages: Unfreezing, Changing, and Refreezing. The findings indicate that during the Unfreezing phase, Darunnajah raises students' awareness of the need to develop traditional da'wah models. During the Changing phase, the Islamic boarding school implements social entrepreneurship innovations through various structures, such as cooperatives, Hajj travel agencies, and agribusiness. Finally, during the Refreezing phase, the values ​​of independence and professionalism are institutionalized within the boarding school's culture. Key factors contributing to its success are visionary leadership, a culture of student autonomy, and alumni support; obstacles encountered include internal resistance and a lack of resources. Overall, Darunnajah has succeeded in becoming an adaptive and productive model of modern da'wah that remains rooted in Islamic values.

Muhammad Ali Imran; Nurasia Natsir

Journal of Administrative and Sosial Science (JASS) 2026 Sekolah Tinggi Ilmu Administrasi (STIA) Yappi Makassar

This sociolinguistic study examines patterns of regional language interference in formal Indonesian usage across bilingual areas of Indonesia. Through a mixed-methods approach, this research analyzes oral and written data from 240 participants across three strategic bilingual regions: Javanese-Indonesian, Sundanese-Indonesian, and Batak-Indonesian. Data were collected through structured interviews, ethnographic observations, and corpus analysis of formal documents. Quantitative analysis employed linguistic corpus software to identify frequency patterns and interference distribution, while qualitative analysis applied ethnography of communication approaches to understand social contexts and functions of interference in communicative interactions. Findings reveal systematic interference typologies that vary according to linguistic domains. Phonological interference demonstrates the highest resistance to formal register constraints (78% consistency), with Batak-Indonesian speakers showing the highest interference rates (85%), followed by Javanese-Indonesian (74%), and Sundanese-Indonesian (71%). Lexical interference occurs in 65% of samples with significant variation based on communication domains, where Sundanese-Indonesian shows the highest rates (72%). Morphological interference is found in 52% of cases, particularly in affixation and reduplication systems. Syntactic interference shows the highest sensitivity to situational formality, decreasing from 45% in semi-formal communication to 28% in strict formal contexts. Research implications indicate the need for reorienting language policy from corrective approaches toward recognizing interference productivity. Language policies should develop flexible standards that accommodate regional variations and promote positive attitudes toward multilingualism. In educational contexts, integration of contrastive approaches in Indonesian language learning is required, along with development of instructional materials sensitive to students' linguistic backgrounds, and teacher training on managing productive versus corrective interference.This research contributes to Indonesian sociolinguistics through providing comprehensive empirical databases, developing innovative theoretical frameworks, and replicable methodologies for language contact analysis. Findings confirm that regional language interference in formal Indonesian constitutes a productive phenomenon reflecting Indonesia's multilingual vitality. Approaches that recognize productive aspects of interference while optimizing formal communication effectiveness become key to developing language strategies responsive to contemporary multilingual Indonesian realities.