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東南アジア地域における急速な都市化と消費拡大に伴い、プラスチック廃棄物の発生量が急増し、プラスチック汚染が特に深刻な課題となっている。ASEAN諸国では、使い捨てプラスチックの禁止、拡大生産者責任（EPR）制度、普及啓発キャンペーンなど、さまざまな対策が進められている。しかし、これらの対策だけでは、根強く定着した消費行動を変えるのは難しい。 利用制限や普及啓発だけで十分な効果が得られないような課題に対し、行動科学は有効な補完的アプローチとなる。Behaviour-Centred （行動に関する理解に基づく、行動に焦点を当てた）アプローチを取り入れることで、単なる情報提供や経済的インセンティブに頼るのではなく、「意図と行動のギャップ」を埋め、持続可能な行動変容を促すことができる。...

Using behavioral science to reduce plastic waste on the UP Diliman campus The University of Philippines Diliman (UP Diliman) initiative, led by UP Diliman with support from the Economic Research Institute for ASEAN and East Asia (ERIA), Institute for Global Environmental Strategies (IGES), and Rare, tackled plastic waste generated by a dense campus...

Changing the local reuse economy with behavioral science The Rent Your Cup initiative in Lao PDR, led by Econox with support from Economic Research Institute for ASEAN and East Asia (ERIA), Institute for Global Environmental Strategies (IGES), and Rare, addressed the growing problem of single-use plastic waste driven by expanding café culture and...

Using behavioral insights to increase reusable water bottle use Nopa Move’s Smart Bottle Network, with support from the Economic Research Institute for ASEAN and East Asia (ERIA), Institute for Global Environmental Strategies (IGES), and Rare, addressed single-use plastic waste in Ho Chi Minh City’s commuter coffee culture, where disposables...

Plastic pollution is a growing challenge in Southeast Asia, where rapid urbanisation and rising consumption are driving sharp increases in plastic waste. While traditional regulations such as plastic bans and information campaigns are important, they often fail to shift deeply ingrained consumption and waste management habits on their own. This new...

From "Islands of Excellence" to a "Sea of Change": How ASEAN's Secondary Cities are Localising the SDGs in the region As the ASEAN region rapidly urbanises, the focus often falls on its mega-cities. However, a quiet transformation is underway in the region’s secondary cities -- the agile urban centres that are proving to be fertile ground for...

This report evaluates a pilot project in Padang, Indonesia, that introduced the digital application to modernise community-based waste banks. The study explores how digital transformation can improve operational efficiency, data accuracy, and transparency within a circular economy framework. While the initiative successfully digitised thousands of...

The widespread issue of plastic pollution is increasingly affecting human health, with growing evidence of exposure, particularly in regions such as ASEAN, which are rich in aquatic resources. Microplastics and nanoplastics contaminate water bodies and are ingested by aquatic organisms. Given the high consumption of seafood in the region, humans...

This presentation outlines an initiative applying behavioral insights (BI) to reduce single-use plastics (SUPs) across the Asia-Pacific region. Phase I (2022-2024) implemented pilot projects in Indonesia, Thailand, Vietnam, and the Philippines. Departing from traditional "rational choice" theories, the project utilized the "Levers of Behaviour...

This commissioned report presents a capacity and training needs assessment conducted to evaluate the Philippines' current capabilities and identify critical gaps in microplastic and nanoplastic research, facilities, and public awareness. In response to growing global concerns over plastic pollution, comprehensive surveys were administered between...