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All Journal Jurnal Ilmiah Multidisiplin Indonesia
Achmad Tarmizi
Faculty of Business and Social Sciences, Dian Nusantara University
Agriculture, Biological Sciences & Forestry Computer Science & IT Earth & Planetary Sciences Engineering Physics

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The Influence of Environmental Awareness, Knowledge, and Consumer Income on the Reduction of Plastic Shopping Bag Use Achmad Tarmizi; Dian Meliantari
Jurnal Ilmiah Multidisiplin Indonesia (JIM-ID) Vol. 5 No. 04 (2026): Jurnal Ilmiah Multidisplin Indonesia (JIM-ID), April 2026
Publisher : Sean Institute

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Abstract

Plastic waste has become one of the most critical environmental issues in Indonesia due to the increasing consumption of single-use plastic products, particularly plastic shopping bags. Excessive plastic usage contributes significantly to environmental pollution, as plastic materials require a very long time to decompose and can cause serious damage to terrestrial and marine ecosystems. Therefore, understanding the factors that influence consumer behavior in reducing plastic shopping bag usage is essential for promoting sustainable consumption. This study aims to analyze the influence of environmental awareness, consumer knowledge, and consumer income on the reduction of plastic shopping bag usage among students of Dian Nusantara University in Jakarta. This research employed a quantitative approach using a survey method, where data were collected through questionnaires distributed to 95 respondents. The data were analyzed using multiple linear regression with the assistance of SPSS software. The results show that environmental awareness, knowledge, and consumer income significantly influence the reduction of plastic shopping bag usage, both partially and simultaneously. Environmental awareness was identified as the most dominant factor affecting consumers’ behavior. These findings highlight the importance of strengthening environmental education, increasing public knowledge, and supporting sustainable consumption practices to reduce plastic waste and promote environmental sustainability.
The Influence of Price, Digital Marketing, and Consumer Reviews on Purchase Decisions in the Shopee Marketplace Achmad Tarmizi; Dian Meliantari
Jurnal Ilmiah Multidisiplin Indonesia (JIM-ID) Vol. 5 No. 03 (2026): Jurnal Ilmiah Multidisplin Indonesia (JIM-ID), March 2026
Publisher : Sean Institute

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Abstract

This study aims to analyze the influence of price, digital marketing, and consumer reviews on purchase decisions in the Shopee marketplace among students of Dian Nusantara University, Jakarta. The research uses a quantitative approach with a survey method. Data were collected through questionnaires distributed to 95 respondents who actively use the Shopee platform for online shopping. The data analysis technique employed in this study is multiple linear regression using SPSS software. The results indicate that price does not have a significant effect on purchase decisions, suggesting that consumers do not rely solely on price considerations when shopping in online marketplaces. Conversely, digital marketing has a significant positive influence on purchase decisions, indicating that promotional activities through digital channels play an important role in attracting consumer interest. Furthermore, consumer reviews were found to have the strongest influence on purchase decisions, highlighting the importance of electronic word-of-mouth in shaping consumer trust and reducing perceived risk in online transactions. These findings emphasize the importance of integrating digital marketing strategies with effective consumer review management to enhance purchase decisions in e-commerce platforms.
Co-Authors Dian Meliantari